Xiaomi M365 How To Double your Battery Capacity

[@TheLKline]

Fantastic modification. It would be great if Xiaomi produced an upgrade kit for the 365 with a full set of easy to follow instructions for those of us that don't understand electronics. I would love to do this modification but it's too risky for me. Instead of getting double the range it would end up not working at all ...lol. Great video.

[@DougHnut]

Thanks!find a friend who likes to tinker with electronics. and pay him to do it. if you have all the parts, it shouldn't take more than 2 hours to complete.

[@TheLKline]

You're welcome; you're a talented individual. I don't know anyone with the knowledge to carry out this modification so I'm pretty much stuck in one place from that perspective. I was considering the a complete scooter upgrade like the Inokim OX, but it's very expensive and I fear the performance claims are wildly exaggerated like most scooter manufactures. Would you happen to have any tips on fitting the solid tyres to the M365? I was reluctant to buy them but get punctures on an almost weekly basis in both wheels and I've got tired of buying inner tubes; they just perish with the heat generated inside the tyre. Thanks again for the videos.

[@DougHnut]

i tried solid once and i didn't like them. i use a microwave to heat up the tire first and that helped alot . but i read somwhere its better to not use a microwave, and just install it as is. maybe the ones with holes in them are better

[@TheLKline]

Thank you for taking the time to reply. I've actually already purchased the solid tyres you refer to (the hole version) but they're quite literally impossible to install. There is no pliability with the compound, it's just solid. I spent hours yesterday trying to put one on but it was a hopeless task, despite soaking them in boiling water (something I read on a forum). Haven't tried the microwave tip yet as I was disinclined to place them in my brand new oven lol. Plus, I've heard similar to you that it's not a good idea. I'm at a crossroads with this scooter; I think it's a fantastic machine, but the continuous punctures remove the practicality from owning it. It's just a pity these common problems haven't been addressed by the manufacturer with a tubeless tyre conversion. This scooter has so much potential, but the simple things haven't been addressed. Hopefully they'll eventually bring out a new model with considerably more power & range, plus tubeless or solid tyres. Thanks again for your interaction & help. Much appreciated.

[@DougHnut]

Thanks for the kind words. I forgot to suggest a tire liner. Commonly used in bicycles. It's a thick liner that goes between the tire and tube.

[@stanislawjarzynski6133]

Doug, you're the man. I modified my m365 just like you showed us - and it works! Woo hoo!

[@isaacwhoo2812]

What fuse u used

[@totodiable]

@Jesus Ramirez really? I can just steal the lime battery and put it on my xiaomi?

[@slothypunk]

@Jesus Ramirez does that count as stealing? You can get arrested for that right?

[@totodiable]

@Jesus Ramirez I bought an original battery for 100 bucks but I'm really curious about lime. The lime scooters here in Brussels aren't the same model as the xiaomi

[@slothypunk]

@Jesus Ramirez if that's true, all I can say is this is why we can't have nice things as society. leave it alone and pass it on to the next person who wants to use it, even though the city hates it.

[@whitcwa]

Thanks for this video. It is a good mod. I did it just a little differently. I didn't open the battery. I just spliced an XT60 connector to the battery wiring by doing a "window strip" on the wires. I used a piece of sheet aluminum to make a battery bracket and mounted the bag to the folding steering column just above the latch. Finally I added a battery multimeter which shows Volts, Amps, power, and energy used since last reset. This required adding a current shunt inside next to the motor controller. I charge the batteries separately by disconnecting the external XT60.

[@josephmesina3975]

Chris W you should do a video if its easier

[@whitcwa]

@@josephmesina3975 It wasn't necessarily easier, just different.

[@jb-lu4vo]

Very good video is an easy way to understand this matter very practical to improve the range of the battery. Thank you for doing it because I am thinking about to buying an electric scooter and I did not know which one to buy. I think this Xiaomi M365 is simple, practical, light and economical. The only thing is to be able to extend autonomy a little longer. I wish you the best and continue making videos about the Xiaomi M365, please. Take care.

[@Achabab]

Are you buy it? How is it?

[@parrotnine]

This has been the nicest reply I have ever seen to a KZbin video. Well done

[@valben1111]

Great mod for old scooters with single fuse bms. Have installed a 10a/h battery and all works flawlessly.

[@Bergwacht]

I actually think that the fuse is not necessary if you do not make a mistake in the conversion.

[@dennisonicc]

@@Bergwacht If you don't use diods for preventing charging you must use a fuse, otherwise you are risking burning your home down.

[@Bergwacht]

@@dennisonicc The comment is 3 years long, I still drive the same 2 batteries in parallel without a diode. Apparently you should only use good reliable BM;S and not trash dead cells from China.

[@MarbleRoller]

The second batttery voltage monitor you installed is connected to your add on battery... Which is connected to your main battery behind the BMS but after the ribbon strips.... So all your reading is the higher voltage of one of two batteries. Not a separate voltage since all you did was splice two packs together. You would have to be able to isolate that pack from the other to get an accurate reading. Otherwise, your just reading the voltage from whichever pack is giving more power....which is most likely the original...

[@plaguearttutorials]

Will the same connector setup (XT60) plugs Work on a 36 v 12ah battery Can I use your exact wiring?

[@flitsies]

Nice simple job. But one thing that may help if someone doesn't want to drill into their scooter is to use extra strong Velcro, this stuff is super strong once in place so won't fall off. Normal Velcro will fall off but the extra strong stuff won't allow your battery pack to fall off. But the stick on extra strong Velcro is very good for this kind of job.

[@uzkanda]

Awesome mod. Small tip, you cold splice not the battery, but to power wires going to motor controller. It could show wrong power consumption, as one controller would be bypassed, but no need to dissemble the battery.

[@DatFunnyofficeguy]

Awesome guide, followed the steps and it worked perfectly. Yes i do suffer from range anxiety! There is such a thing! Im currently using cfw w firmwire and getting around 40kms on m365.

[@willtrip711]

Does your top speed last twice as long?

[@DatFunnyofficeguy]

@@willtrip711 no as soon as the voltage hit below 38v top speed drops to 30km per hour instead of 32 per hours. Cheers

[@spyrosbellos2522]

@@DatFunnyofficeguy how is the top speed when you are at low percentages like bellow 25%

[@themystx2]

excellent write-up, but one flaw with your methodology; although in theory it shouldn’t be an issue charging both batteries through the scooters charge port, the external battery BMS cannot protect against overcharge or properly balance in case of a runaway or defective charger. my advice to those would be always to charge the two packs separately whenever possible; you’ll get a full charge faster this way and will allow the external BMS to do its job on the input port in terms of balancing and protecting against overcharging. I also run a parallel battery setup on my Dualtron Spider and it’s close to tripled the range, i suspect due to the fact both batteries are drawing so much less current that they don’t break a sweat.

[@sebeqone]

Is a single port charge/discharge BMS with external battery pack a good solution to this problem? I think the battery will be protected then.

[@027fuckoff]

I don't understand your theory here, why would the BMS not be protected on the second battery pack? Wont it still be getting charged through the same electrical path which goes through the second batteries BMS? Why is this?

[@FinalVertex]

"range anxiety" :DDD good one

[@FrostFoxBeats]

2:39 can somebody help? What is that plastic cover thing on the side? And what about the fuse? I dont see it linked in the parts list. I am not an electrician i have no clue about this stuff please be easy on me

[@nickyclub44]

Great video! Would be possible to upgrade the 18650 batteries in the original scooter battery?

[@DougHnut]

I would be possible. But at best you'd get 10.5ah total , an improvement of 2.7ah with 3500mah li ion cells. Imho, it's not worth the effort and cost.

[@cs20m]

So, it's all about just placing another similar battery in parallel to the existing one? How is this new battery charged ? do you simply connect the charger to its jack and it would charge both batteries at the same time ? is it safe for both batteries and the circuits ?

[@stannikolov]

Thank you for the video. I was thinking to create something like a power bank for my scooter to charge it when travelling. Do you think it is possible to use a lithium ion battery and plug it in the charging port to charge my scooter's battery?

[@xxxzorroxxx123]

The only way to use like that is to use lipo and voltige converter to ujust voltige from lipo to scooter 42v plug....

[@whitcwa]

Not without a current and voltage regulated DC-DC converter

[@rafaelcarloset]

The fuse is 2A? Do you charge both batteries at the same time with 2 different chargers? What if during the charging there is a different charging time and it result in more voltage on 1 battery? Thx for the answer and thus video!

[@jashton8710]

Does the original factory battery not use a BMS? If so, would you not want to charge each battery pack separately? I see that the add-on does not have a BMS.

[@__J__A__X__]

Hi there mate. Thanks for making such an informative video. Are you still offering to make up and send the connector cables required to hook up additional battery? I've just recently bought a 36v 14ah battery identical to yours in the video but am clueless how to get it hooked up like you did in the video

[@Moe_Lester_fromUptwn]

I don't get the math, conversions and lingo, but kudos. It's great to safely experiment and explore beyond set limits, especially with the right know-how. Which you possess. I'd honestly pay for you to do one for me.

[@Apollo3288]

Hey thanks for the video. I have a hover-1 pioneer. But I did the same thing, however the one battery I ordered was 36 volt and I made a y cable with the fuse and connected them both. My question is how do I know if the one battery is not just draining into the other. I'm not sure that I'm getting any further. What would be your advice to test this? FYI I'm brand new at this. And advice would help

[@yungolsi3327]

U deserve a subscriber bcoz u real man saying where u bough it and like as wel others yotuber dose not say it they not good 👍

[@jeffedydooda]

great video,so how much further can you get by adding 2nd battery? I'm strongly thinking of buying scooter, but would really like it to be able to go a bit further than the estimated 20km

[@varez1]

on 5:00 you can see a screenshot - 40,4km and battery is on 2% (so basically empty). Original battery is 7800mAh, the one used on this video is 8000mAh, so the math is clear - it will go twice as long (the range will rise linear with added capacity, you can use 20000mAh battery - just remember it puts a weight on your scooter too and charges longer :P)

[@sebastianorad]

Hell, I have a Xiaomi Essential scooter with a range of 20km, can I replace the original battery with one from ali express that says 60km ? Do I have to make any modification or is it just plut and play ?

[@suratullahkhan6158]

Can I put two batteries together like you did with cables even if they have one 7.8mha and 10.mha to get a total of 17.8mha as long as they have the same voltage (36v)?

[@terragady]

yes

[@thedeukful]

can you also just wire the same m365 batteries together the same way you did this? is there a limit to how many you can wire together? can i do 4? thank you for the video.

[@sebeqone]

This external battery is a great idea, but are you sure, that you can safely charge this battery pack with the discharge port on this battery pack BMS? I cannot find documentation for this :/

[@ptescreen18]

Did you ever find out if you could do this or not

[@aragorn318]

Do you know what 'Cycle Period' is under Battery Info? Does this mean how many times the battery would have been fully drained if never recharged?

[@DougHnut]

Yes it shows how many times the scooter has used up 7800 mah worth of battery power. The other number is how many times you plugged in for a charge

[@aragorn318]

How many battery cycles do you have on your scooter? I bought a new battery two months ago and currently have 16

[@DougHnut]

I currently have 74 full cycles. Sounds like you ride quite a bit!

[@aragorn318]

Yeah, this e-scooter is the perfect changeup to my SUV, road bike and mountain bike. I like to ride this 5-6 miles everyday. I've got around 1250 km on it

[@aragorn318]

Just so you know, I did permanently damage my original battery 4 months ago when I rode with CFW and BMS 1.07 setting every day for a few weeks as featured in one of your prior videos. But that battery damage probably occurred due to a number of other factors in combination. At the time, I was also riding with solid rear tire, was going up some steep inclines, weigh 185 lbs, and was very hot outside at the time. Nevertheless, I don't recommend CFW and BMS 1.07 because I noticed that my connection points on my controller are permanently burned and also, there are some burn marks on my white plastic fender near my front hub motor.

[@Mosquito3314]

love this tutorial its really simple and striaghtforward. But imma gonna build my own battery pack from individual cells

[@cirwo85]

Sounds like you probably prefer to do this yourself but just in case; I MAKE EXTRA BATTERY CONNECTOR KITS FREE OF CHARGE IN JESUS NAME (Y joint & extension Line with in-line fuse - the type most video tutorials are showing). I make these as a kindness in Jesus name/to serve the Lord/bring Him glory. I’ll even pay the shipping (For Jesus names glory). ID RECOMMEND EITHER OF THESE BATTERIES (Laudation great seller/great customer service) - Both these batteries can be charged thru discharge line which is mandatory! If you get a wrong battery you will destroy your scooter 8AH: www.ebay.com/itm/254641436327 12AH: www.ebay.com/itm/254638872330 In 2014 Jesus delivered me from heavy meth addiction, adderall prescription, alcoholism, cigs and all other sins I was walking in. No rehab or any other outside help. Just the Lord and His Word. Jesus is alive and changing lives! Eternal life only thru Jesus Christ, name above all names We can message on FB Messenger where you can see I’m a legit zealous Christian if you want. Can see I’m not a spammer or whatever that way

[@mikepdel]

Hi thanks for the video I'm thinking on doing this to my scooter, a question how do the external battery cells get a good valance charge,

[@cirwo85]

Did you ever do it? I can make you a kit to add extra battery real easy. Just a y connector and extending line with in-line fuse. I sell them for $20

[@PkKingX11]

Is there not like a bigger battery that you can just replace the original instead of adding another one?

[@cirwo85]

Why not just add another one? Real simple I MAKE EXTRA BATTERY CONNECTOR KITS FREE OF CHARGE IN JESUS NAME (Y joint & extension Line with in-line fuse - the type most video tutorials are showing). I make these as a kindness in Jesus name/to serve the Lord/bring Him glory. I’ll even pay the shipping (For Jesus names glory). ID RECOMMEND EITHER OF THESE BATTERIES (Laudation great seller/great customer service) - Both these batteries can be charged thru discharge line which is mandatory! If you get a wrong battery you will destroy your scooter 8AH: www.ebay.com/itm/254641436327 12AH: www.ebay.com/itm/254638872330 In 2014 Jesus delivered me from heavy meth addiction, adderall prescription, alcoholism, cigs and all other sins I was walking in. No rehab or any other outside help. Just the Lord and His Word. Jesus is alive and changing lives! Eternal life only thru Jesus Christ, name above all names We can message on FB Messenger where you can see I’m a legit zealous Christian if you want. Can see I’m not a spammer or whatever that way

[@danielgomes3832]

Good afternoon Is it possible to change the xiaomi mi scooter 3 battery for a battery with greater capacity while keeping my xiaomi app? Or do I need a different application?

[@alltheboost5363]

So I was reading Googling on how to add a second battery cuz I believe I came across one of your posts that you burned up your controller. how long did it last what do you think the cause was? Be awesome if you went into great detail on a video. What I don't understand is why don't people bypass the BMS to the speed controller but leave the BMS there for charging and balancing.

[@SuperBujo83]

Would there be a way to ever run two factory batteries on an On/Off/On switch and effectively have a 'reserve tank'? I'd be interested to see that done.

[@whitcwa]

It could be done, but not with "factory batteries". Only one "factory battery" fits in the scooter. Plus, there is little reason to do it. It wouldn't increase the range over paralleling two batteries. You still wouldn't know exactly when the second battery would run out. It also wouldn't help with reducing voltage sag on hills. Also, you can NOT parallel a dead battery with a charged one. Too much current will flow and the BMS will shut the battery down (if the fuse doesn't blow first).

[@Infinityxx3]

Ive been waiting for this vid... tnx bro

[@cirwo85]

I doubt you still need it but just in case: I MAKE THESE KITS FREE OF CHARGE FYI (Y joint & extension Line with in-line fuse). I make these as a kindness in Jesus name/to serve the Lord. I can ship anywhere.. long as it is not too expensive I can pay the shipping (For Jesus names glory). ID RECOMMEND EITHER OF THESE BATTERIES (Laudation great seller/great customer service) - Both these batteries can be charged thru discharge line which is mandatory! If you get a wrong battery you will destroy your scooter 8AH: www.ebay.com/itm/254641436327 12AH: www.ebay.com/itm/254638872330 In 2014 Jesus delivered me from heavy meth addiction, adderall prescription, alcoholism, cigs and all other sins I was walking in. No rehab or any other outside help. Just the Lord and His Word. Jesus is alive and changing lives! Eternal life only thru Jesus Christ, name above all names We can message on FB Messenger where you can see I’m a legit zealous Christian if you want. Can see I’m not a spammer or whatever that way

[@Melvin420x12]

How about recalibration of the battery meter in the scooter itself? I assume it doesn’t know about the second battery. So does it stop charging once it thinks the original battery is full? Does it charge and not stop? How does this exactly work in firmware?

[@armandmartinez7110]

How about making a 2nd battery case that is mounted on the stepping platform which holds already the original battery pack beneath it? It should be possible to add a 12.8 Ah Pro Version battery. In that case you would stand elevated a bit because of the 2nd battery packed on top of the 1st above the platform, but spreading the batteries over the entire space should not increase the height too much.

[@orangestoneface]

then harder on knee to bend down more to help uphills by kicking on ground backwards

[@maxsinventions8913]

I thought it would be cool to mod the deck of the board to make the battery hot swappable, and carry an extra with you. The additional capacity in your setup helps with the voltage sag, so that is nice.

[@bsmaster8493]

I was also thinking about this. To be carrying 2 more extra batteries in my bag :D And to do so i think u just need to make the main battery to be able to get disconnected and then u can just disconnect the main one and connect the other one .. Just not really sure if its gonna work well as in BMS is more cables to the circuit board. So there might be some problem with accepting the new battery.

[@Matahalii]

Hey, cool stuff. Like to do it to my scooter, too. Must I get a battery with dedicated "Common" BMS? I guess in a "Seperate" BMS you can't load it through the scooter's chargeport and must use the dedicated charge-plug?

[@TheLondonCyclist]

Yes. If the battery has BMS, then you can charge through normal port both.

[@EvzenEmanuel]

How do you balance the cells inside your external battery pack?

[@gresoiumadalin9720]

There are two ways to put this battery in parallel. This one you’re showing in your video and with a Y splitter before the bms . Which one do you think is better ? I assume that using the Y splitter you need to charge separately

[@לינויסטולרו]

Hi, how much the rage got better? Is the charging work’s properly after a few cycles also?

[@unluckeh]

2:29 Did you notice that??? sparkle sparkle oO right where the red cables starts (battery side) Not sure if thats good

[@Falleen]

that is the bms normal led mode.

[@jesper164a]

I think you forgot your glasses... It's clearly a LED flashing.

[@volpii]

hello dear, how do you charge external battery? saparately or internal and external batteries charging together from main charge plug?

[@volpii]

i got the answer in 4:30 :)

[@cirwo85]

Incase you’re interested: I MAKE EXTRA BATTERY CONNECTOR KITS FREE OF CHARGE IN JESUS NAME (Y joint & extension Line with in-line fuse - the type most video tutorials are showing - much safer method as well). I make these as a kindness in Jesus name/to serve the Lord/bring Him glory. I’ll even pay the shipping (For Jesus names glory). ID RECOMMEND EITHER OF THESE BATTERIES (Laudation great seller/great customer service) - Both these batteries can be charged thru discharge line which is mandatory! If you get a wrong battery you will destroy your scooter 8AH: www.ebay.com/itm/254641436327 12AH: www.ebay.com/itm/254638872330 In 2014 Jesus delivered me from heavy meth addiction, adderall prescription, alcoholism, cigs and all other sins I was walking in. No rehab or any other outside help. Just the Lord and His Word. Jesus is alive and changing lives! Eternal life only thru Jesus Christ, name above all names We can message on FB Messenger where you can see I’m a legit zealous Christian if you want. Can see I’m not a spammer or whatever that way

[@flitsies]

Any problems or charging issues once battery in place? I can't see any reason for there to be any but lithium batteries can behave strangely some times

[@CabrioDriving]

1:24 what is the name of this part? Do you have link?

[@dawoodkhan6067]

Do you have to solder an extension cable to the battery?

[@Ruben-hf1fw]

Could be possible to add a extra battery of 36v 12.8ah combining with my original xiaomi pro with 37 vdc 12.8ah ?? Or need to be the same numbers!!

[@cicciottobiscotto5070]

Ehy, thanks for this video. This mod might really make the difference! Also, it can slow down the wear of the original battery, as now it will be cycled half of the times basically.

[@DougHnut]

absolutely correct!

[@paulkazjack]

Not really. You've had to buy the extra battery!

[@nikostevens1]

@@DougHnut H Doug, I have a question about the fuse. I have a Xiaomi Pro. Since the scoote's has an output of 42V, what type of fuse should I use. The ones I see on Aliexpress are either 12V or 32V. Thanks in advance!

[@bbltd.3154]

Doug what if I was to take this 36 volt 8 amp battery, and connect the discharge cables to the charge port of my scooter? As if I'm charging it as I'm driving it. Would this work as well? I'm looking for an alternative to having to open up the scooter and do soldering and whatnot. What do you think?

[@cirwo85]

I MAKE EXTRA BATTERY CONNECTOR KITS FREE OF CHARGE IN JESUS NAME (Y joint & extension Line with in-line fuse - the type most video tutorials are showing). I make these as a kindness in Jesus name/to serve the Lord/bring Him glory. I’ll even pay the shipping (For Jesus names glory). ID RECOMMEND EITHER OF THESE BATTERIES (Laudation great seller/great customer service) - Both these batteries can be charged thru discharge line which is mandatory! If you get a wrong battery you will destroy your scooter 8AH: www.ebay.com/itm/254641436327 12AH: www.ebay.com/itm/254638872330 In 2014 Jesus delivered me from heavy meth addiction, adderall prescription, alcoholism, cigs and all other sins I was walking in. No rehab or any other outside help. Just the Lord and His Word. Jesus is alive and changing lives! Eternal life only thru Jesus Christ, name above all names We can message on FB Messenger where you can see I’m a legit zealous Christian if you want. Can see I’m not a spammer or whatever that way

[@antonioacy860]

Great video Doug. Is it possible to connect this type of battery over the original adapter jack? I do not want to lose my warranty...

[@DougHnut]

It's not going to work if you try and plug into the charging port.

[@mxsprille]

de.rollerplausch.wikia.com/wiki/Zusatzakku_verbauen

[@story1234]

Hey. If my external battery is 6AH and my internal is 7.5AH, will the battery of the 6AH just cut off when it’s exhausted due to its own BMS?

[@codyrozema]

Thanks for the great video! After installing a mod like this, does the battery indicator on the dashboard still work? Does is show the capacity of both batteries?

[@slick1908]

it should, as the battery capacity is read by the voltage in batteries, not by the actual capacity

[@codyrozema]

@@slick1908 Great, tnx! Now we're still on the wait for AliExpress to ship the battery but I cant wait for the project

[@Supervhizor]

M365 tools still obviously report the capacity as 7800mAh since that's the size of the original battery. Does this mean that after a full discharge, the scooter will think it has -8000mAh remaining since that's the size of the additional battery? I'd assume it calculates charge remaining by voltage, not current drawn so the extra juice should still be used right?

[@volpii]

i have a question, because of my countries custom rules i am not able to order any lipo from aliexpress but i found a lot of hooverboard batteries in domestic market which is 4400 amh and 36V. hoover packs instruction it says continues discharge

[@dennisk6201]

so you buy a 36 volt battery pack and charge it up to 42 volts? doesn,t sound very save to me

[@artofverity8791]

how about splitting the original battery pack into 3 so they are under the 100watt hr allowed on a flight?

[@sunghoryu944]

I am also writing in connection like you. And my aircraft is an m365 model, and two genuine 7.8ah batteries are connected. However, it can only be used with a range of 16 km. Why?

[@Chubbytom21]

How can you tell if your battery can charge from the same Xt60 discharge port?

[@pajoche]

Hi Dough. Can I use as same battery charger for the external battery as I use for the regular battery in the Xiaomi M365? I guess yes as the parameters match but just to be sure. Thanks

[@fsuamen]

how do you solve the overheating issue?

[@petryrety]

We need to flash custom firmware to cancel charging mode effect? Or there we don't have this problem? Thanks

[@KaktitsMartins]

Why is your fully charged batteries only 41.2v? I understand the scooter limits the voltage to 41.5, does the aliexpess battery limit it too? Either way, 41.2 is not exactly full.

[@whitcwa]

It is bad to charge lithium cells to their maximum allowable voltage. It leads to shortened battery life and increases the possibility of developing internal short circuits which can lead to fire. That said, the difference between 41.5 and 41.2 is too small to be significant. It is only 0.03 V /cell

[@mickmorris7708]

does this charge your battery in 365 pro with the black plugin lead

[@Apollo3288]

Also I ordered the battery meter, but I have no idea where or how to install that.... So I just have it here. Can you please show me how to do that

[@jackmenino9654]

Hi Doug Hnut first thanks for your comments . Another question regards to the battery , in order to expand battery life is it better to charger battery after every ride or when its really low in power? thanks.

[@DougHnut]

the best possible way to extend battery life is to the the 60% in the middle. avoid the first and last 20%. but this is difficult to do. so i charge after every ride. if you are gonna store the scooter for awhile, leave it at half charge. 1300 km ridden so far

[@psy881212]

just out of curiosity why didnt you just connect the discharge charge port of the new battery to the charge port of the old battery when both are of equal voltage? it would prevent you from having to solder anything.

[@imanipowell6765]

Can you connect the extra battery in parralell through the charging port? (I have a scooter with a embedded battery)

[@whitcwa]

Probably not. Charge ports are not designed to handle the current demand.

[@singingirand7925]

Would it be ok to take out the extra battery when you don't need that much range, then put it on when you do need the range? Will the voltage change during discharge and will it affect connectivity?

[@DougHnut]

yes it would be fine. just fully charge both batteries before disconnecting, and fully charge original before reconnecting

[@sparklauerei1]

are you sure its fine to charge the battery via the discharge port? I heard that the bms wont balance then

[@Hydropanic1]

Can you also use this setup with a 3S battery (increasing speed?)

[@kronosvv4518]

Hey What kind of fuse do i need if Install a 4.4a 36v battery

[@pauliusmatiusovas4102]

same 25 A

[@mastorakakis]

Thanks for the video. The battery you suggest doesn't get shipped to Greece. Can you tell me what are the specs I should take in consider if I have to order it from somewhere else? Also, will it work if I buy the original battery and use it as an external. Is the size right enough?

[@DougHnut]

Search 10s4p on aliexpress. And look for one sold by or is labeled littokala. It should have a capacity of 8000mah or 8ah .

[@markocomhr]

Hi i have an idea so let me get it out I want your opinion, i was thinking ordering another orginal battery, then 3D printing a extended lower case battery under the scooter and soldering them too together. What do you think?

[@DougHnut]

i worry about ground clearance. similar things have been made but only an inch lower for one extra layer of batteries. search m365 on thingiverse.

[@davelee88]

Just finished doing this modification. Only difference is, I didn’t solder the cables to the scooter battery, I used connectors instead. I also took the extended cable and ran it inside the steering tube which runs along side the red brake cable. To contain the battery, I used a Head Handle Bag which I bought from AliExpress. It’s much neater and saves you the leg space. Just waiting for this bloody rain to stop so I can test it out! 😤

[@johanswede8200]

...Everybody is talking custom firmware. I have a new Xiaomi m365 with the latest update...1.5.1 version. Not good they say. Better to have earlier versions. When you did your modification, did you have to consider what version you had? Do you think it will work for me with my 1.5.1 version?

[@davelee88]

Johan Swede, so far no issues but early days. Its made in 2018 and I’ve updated to. 1.5.1. Switched the regen braking to low as I heard it can damage the batteries. Haven’t bothered customising the firmware as I don’t have an Android phone.

[@diablo.the.cheater]

would be possible to connect 2 extra batteries instead of just one? and what about 3 or 4? or would be possible to make so that is first consumes the external battery and then start consuming the internal one(that way i can have extra batteries in a backpack and change the external one) i live very far off everything and just doubling the battery would not do, at least i need to make it last three times as much

[@Mietas2]

The way batteries are connected here basically makes them look like "one big" as far as scooter electronics think. To discharge one by one I think you would need some extra circuit board that would switch power supply from empty to full. Can be done but will be more expensive and complicated and, with so many batteries, very heavy.

[@dawidjagodzinski7334]

Hey, im after installing second battery. I have problem because my charger is only lighting red light. It is normall? I application downg i only see original battery with 100% but charger is not going to green light

[@thavis117]

How do you charge the battery? Do you charge it by leaving it plugged it and using the scooter's charger or do you have to remove the battery and charge separately?

[@DougHnut]

charge it by leaving it plugged it and using the scooter's charger

[@sampsonchillaxin6461]

hey Doug my friend has a Razor E300 scooter which comes with two 12 volt when acid batteries which were crappy they weren't even made for the purpose they were made for like auxiliary flood light in case power went out anyways they are run in series so it acts as a 24 volt can I just install that battery pack that you had from a M365 which is 36 volts without running two 12 volt batteries which is 24 volts can I run a single lithium ion 36 volt battery pack like you have in a Razor E300 instead of replacing two larger lead acid batteries that would not last as long reach we acquire longer charging and you know the drill LOL would that work or would it burn out the motor or controller after amount of time I've heard conflicting stories

[@toddcoye8856]

So what? Are you simply just hooking up the other battery to the factory battery terminals and using x60 connectors? And a fuse in between? Does the fuse part go in the bag or compartment? Does it matter which end? what about the factory battery connector ? Do you just leave it the way it is? None of this was explained in whole what is being done

[@PhamstaTL]

Can you explain why the fuse is needed in your method? Others just use straight y cable with no fuse. Thank you!

[@mgmmassey]

Just in case of a voltage difference between battery packs....power will move almost instantly between battery packs to attempt to equalize voltage and this creates extreme heat and probably fire. The fuse is a backstop against voltage differences.

[@whitcwa]

@@mgmmassey Quite right. Also in case there is a short circuit in the wiring which was added.

[@DieselRamcharger]

as long as all the cells are the same Mah and Volts its not bad. mixing different cells can be bad if they aren't well matched in capacity.

[@ksrnate]

Hey dude, what would happen if I used a 4ah battery pack instead of 8? Would they still drain equally? Like it's it's 12ah? Thanks

[@hamzarivera4385]

Hi is there any way that I could use that external battery pack as a powerbank for my xiaomi m365? I mean I could charge it seperately from the battery and I could use it to charge up my xiaomi. Is there any method like that?

[@randomstuff-wg6nj]

hey Can I Connect a Extra battery Through The charging Port

[@Marauder252]

No

[@randomstuff-wg6nj]

@@Marauder252 well I figerd That Out. and U can't Do it stock No. But If You Solder on extra Wires To the Charging Wires u can Resolder them from the bms Directly to the Battery and Then It Will Work

[@ThePiispa5]

How did you attach the wood top of the plastic sheet?

[@duddybrown1521]

Hey, I noticed on the site you linked for the battery is a battery with 10 amp hours instead of 8, still 36 v Would this still work assuming I could figure out how to mount it?

[@varez1]

it will work, it just has bigger capacity to it will last even longer

[@khalilkh7389]

@@varez1 Will it not be problem the bigger battery Will charge smallere battery and over heat

[@cosmickd]

I did not see the fuse holder listed on parts used. Can you please provide a link for the fuse holder?

[@DougHnut]

www.banggood.com/Waterproof-Car-Auto-10-15-20-30A-Amp-In-Line-Blade-Fuse-Holder-Fuses-p-916113.html?p=YP1723250947201308J5&ID=45357&cur_warehouse=USA

[@jan1687]

Hi! I really enjoyed watching the video. Great job! I am planning on using a 10s4p 12ah battery.I was wondering if you knew the maximum amperage of the battery, what is the max the esc supports. Would really appreciate a reply! Thanks!

[@antovrbat9946]

You should't worry about amperage. Bigger batteries have more amperage. But generally esc have max 500w so 500/42 is 12A. But wiring in parallel You are summing amperage, voltage is same. In series voltages are summing and amperage is same.

[@jan1687]

@@antovrbat9946 so if I were to wire 2 6 amp batteries in parallel I would get a battery with double the amperage and capacity? I know the capacity increases, but does it affect the amount of current the battery can produce? Many thanks!

[@antovrbat9946]

@@jan1687 Yes you are increasing amperage. Because Power=current * voltage. Voltage is same, so current must be dubbled. Only thing you need to check is voltage. It MUSt be same, and you need to check manually with multimeter. And batteries should be simillar capacity. Because of voltage drops, weaker battery.

[@whitcwa]

@@jan1687 Don't confuse maximum Amp rating with Amp-hour rating. They measure different things.

[@davidkon9466]

2:57 name of this parts and link to bay

[@juleks2988]

inline fuze holder

[@DoroteoVilla]

Hey, thanks for all your tutorials. They've saved me a lot of frustration with owning a couple of these. One of them has just stopped working. The front wheel is spinning in jerks and stops. The battery is fine. I don't think it's the bearing because they spin fine if the scooter isn't on. It's when the power is on that the front wheel spins in fits and jerks. It isn't the break either because I tried the front wheel with it off the ground to see how it spun. Have you experienced this before? .Thanks.

[@mmt3236]

Excited from your video, I tried to extend the battery capacity of my M187. Although everything was done according to your instructions, the battery capacity and range stay the same. (?) Both batteries are connected parallel without failure. Do you have an explanation?

[@DougHnut]

The capacity on the apps will show the same, as well as the estimated range. Go out for a range test and let me know how it goes. If it is still them same then after the range test, can you measure the voltage of the extra pack and see if the voltage has dropped from a full charge or not.

[@johncobbiah]

my second battery is 35v , i have been charging it for a whole day , can i connect it now or wait till 41v. thanks

[@Ouli93]

definitely be the same as the first one. If the voltage differential is to high it will destroy your battery

[@whitcwa]

If you've been charging it for a full day and it is only 35V then either the battery or the charger is bad. A 6V difference will cause too much current to flow from the internal battery to the external one. Even if the fuse doesn't blow, you'll still be discharging the main battery.

[@alexclau6538]

what if i would buy the same battery my xiaomi m365 has and do the rest of the process you described? would that work? with the same kind of battery?

[@bvgb921]

Yes it would work.

[@no_more_free_nicks]

You don't need any battery balancing?

[@KristijanKiky]

Hey. Good video well done. I jave done uograde on mine as well. Parallel connection. Thing is that my battery indicator is dropping down as i have only one battery. I can see that speed, power, and range is much better. I am afraid to see exact range as my maim battery is dropping below 36V, but scooter is still going. Any auggestions?

[@suspensioncheck]

What's the max voltage that you get, using the multimeter, from the main battery? I get 39V and it should be 42V, I suspect we have the same issue, we didn't connected the cables in the right place on the battery, via app the battery has 42V.

[@KristijanKiky]

@@suspensioncheck i am getting 42V. I guess cold weather affects it a lot

[@suspensioncheck]

@@KristijanKiky Just figured it now, my Multimeter needed a calibration.

[@rrcw320]

I lost you when you began to speak in Chinese during the electrical part. Good idea though...

[@chocolatier9597]

Hey Doug, after reading a comment on your previous video about the poor guys’ hinge bolt snapping, I’m scared to ride downhill. He might have forgotten to lock in the circular hook that attaches to where you pull the knob to fold the scooter. Have you had any problems with the handle? I have noticed that mine is getting loose. Might be because I tend to pull the scooter towards me while I am going fast.

[@DougHnut]

i haven't had any problems with the lock . buti broke off the circular hook thing a long time ago and it has never came undone from regular riding. they now sell hinge bolts so maybe it would be a good idea to replace them once a year or something like that bit.ly/2xjtLCA i usually try to ride with as little pressure on the steering to avoid breaking somthing

[@ucheucheuche]

I had hinge bolt snap on my M365. I was going about 4mph when it happened. I do ride my scooter daily to commute, and London's road aren't always paved with smooth gold, but often potholes and cracking tarmac. lol, I tried fixing it myself with diy hinge, that didn't work so bought replacement on eBay for about £6 for the bolt. Ouch

[@chocolatier9597]

ucheucheuche I’m considering getting a vibration damper to help add stability

[@dridiott]

get a bird collar.

[@workcrapbox]

Great clear video, do you think this is mod/upgrade is also applicable for the M187 (Youth Edition)?

[@grigoriosgrigoriadis4657]

Hi guys! Great work as always. I have a question: What is the max size of battery I could add to Xiaomi m365? I mainly see on the internet 8ah, 10ah and 12ah. What about 20ah or even 30ah? Is that even possible ?I am not an electrician so my question may be stupid.