Using an E-Bike charger to charge my large 48V battery?

[@PatricksDIY]

I've been following your videos for a while and I really enjoy them, I'm on a similar journey with my setup, and this is insightful, thank you!

[@OffGridGarageAustralia]

Thank you very much.

[@KD2HJP]

My entire life is a box of orphan cables and wall warts.

[@zubairahmadmir6239]

Does it work when battery is 150Ah

In the case you need charger, I would return the Victron Phoenix inverter and exchange it for Victron Mutiplus II, which includes 35A charger and lots of additional features like ESS.

[@geraldgrogan]

I had the very same idea. He could even sell his charge controller too if he went that route

​@@geraldgrogan The Victron MPPT charger is good choose, it can remain in the system. The Multiplus is device which works both directions. It can charge, discharge at once. It also allows feeding the energy from grid in the case it is needed, but for this off-grid system not a case. The Multiplus is also capable of replacing the smart shunt as it measures the energy from and to battery. It communicates with Victron charger as well to take the solar charge into measure (using VE.smart network).

[@henvan8737]

Where did you find your soldering iron. What a relic.

[@seymourpro6097]

Mains charging is occasionally necessary! With a suitable time switch you can use overnight cheap tariff electricity. More panels is the usual answer, south facing and at an appropriate angle to collect maximum sunlight. OR do as some big arrays do and move the panels to collect maximum sunlight by always facing the sun from say 10am to 4 pm (sun time) wherever you are.

[@Cointech1]

im assuming on every charger where red is present out of 2 is positive? making custom charger dont wanna reverse charge a pack lol..

[@swolath]

What happened to your blue inverter. I thought you didn’t like the black one with the link and floating ac?

[@neliosamch3195]

No good Andy. This is a step backwards if you charge it from the grid. The grid is for backup power only. My batteries are fully charge by 10 or 11am, so no need to count solar production when chargers are just idling for house consuntion.

[@andrewradford3953]

I use the same charger for my mower conversion. How many km of solder did it take for your soldering iron tip to end up like that?

[@pjonespresents9843]

You connected the charger clips to the inverter terminals ? Is that just because the battery terminals aren’t so accessible, and it makes no difference whether you connect to the inverter end or directly to the main battery terminals ?

[@pjonespresents9843]

Equally, could you not have used a bench power supply ? (If you have a 60v one) ?

[@evaldasbagocius8744]

Hi, I have questions my charger no work broken, I can't find same,can I use same voltage but different amperes,my ebike Motor 48v-500w Battery 48v 12ah Thank you in advance

[@OffGridGarageAustralia]

As long as the voltage is the same, it will work.

[@archangel9568]

Marvellous stuff that you have to use a E Bike charger. So much for Vitron brand 💣🧨

[@caspleijsier8983]

But Andy! You have the Viktron Multy plus hanging on the wall, why don't you use that?

[@nilopasini7452]

Hi, i was wondering if you still use that charger i want to buy one too (is it still working?), can you recommend this charger. thanks Nilo

[@mohamedshafeelmohamedbilal6364]

Can I use lead acid 72v charger for my lithium ion battery 72v pack?

[@Dave_Gurman]

Could have used a bench power supply through the Victron solar regulator.

[@jasondevine6014]

I use a DC inverter welder that I have added a couple of windings on transformer. Need to have a relay on 240v side to turn off charger From BMS. Charge at approx 60a at 55v.

[@joshuahanna4914]

Do you know how to charge a 3 prong 42v battery with a one prong 42v charger?

[@yodab.at1746]

As far as I remember, XLR is extra low resistance. Having an ebike, in my experience don't expect a long life with your charger. It'll be under more strain with a very long duty cycle.

[@OffGridGarageAustralia]

As I said in the video, it's for emergency purposes only. Won't use it much, so didn't spent much money.

[@ahaveland]

Those chargers are pretty good - I got 3 and use them in parallel to charge at 15A - this was cheaper than a dedicated 15A charger!

[@1981dasimpson]

i used to use a laptop charger into an mppt controller to keep my 12v battery bank charged in winter worked great

[@neliosamch3195]

Good idea and if you reverse the polarity it will melt the snow in the panels.

[@1981dasimpson]

@@neliosamch3195 not often we get snow and when we do it is not alot

[@Ro-Bucks]

I really wish I knew why I suck at soldering XT60's, I need to make 4 cables (8X ends) and I been putting it off. You make it look easy. I made a charging and discharging parallel board for 4X 36v 18650 cell packs. Then realized that's a lot of ports to make :(

[@reneeccrn]

I had trouble too, now I use flux paste. A game changer!

[@geebonzo]

A few months ago I bounced a boost MPPT charger off you. It was designed for a 12v panel and a 48v ebike pack. I found one, from China, and it works very welll for $40. I have a Sony cell 48v LFP. I might use the ebike MPPT to charge it, but it's 85 watts from one panel. I could go with more panels. There are so many boost DC-DC converters around. I must have a dozen, from 30 watts to hundreds. Hook that up to any old power supply and you get to 50+ volts. I tracked down Lishen and EVE. They each have 3% of the EV battery market in China. So real companies. Now I don't know what Basen is, whether they make anything. I don't know how they are tied to EVE. Seems like people are starting to believe in the 280AH cells, and the very disruptive pricing.

[@waynehobbs5175]

Andy, couldn't you have just cut the output plug off 48v charger and soldered the wires to the yellow connector? Also, if you spent another $38 you could charge at 7.5A! = less than 2 days for 250Ah.

[@OffGridGarageAustralia]

I've ordered a plug which will go into the box so I can plugin the charger directly to the battery box. As I said, is just an emergency charger so does not need more power. I'm not going to charge the battery with it.

[@1981dasimpson]

when i ran my lithium bank i set them absord bulk etc to be as close as possible to max charge of battery to make sure it always got the maximuim amount of current into the bank as possible once it hit the max voltage current always tapered off no matter the other settings i do not see anopther other needs for other settings with lifepo4 or lithuim only lead acid do i see a need for other settings

[@offgridmangogrower]

I know your very busy Can you suggest a 48 v charger in the 20 amp range…so I don’t overwhelm my 4k gen set.

[@OffGridGarageAustralia]

Never too busy for you, my friend. 16s 58.4V/20A charger: s.click.aliexpress.com/e/_DmfGDLR

[@guy7gsa]

Hi what did you end of setting the float and bulk/absortion voltages for the 48v/16s on the Victron Phoenix.

[@Michael-AUS]

Andy, couldn’t you have used your bench charger instead?

[@OffGridGarageAustralia]

Yes, you can!

[@jasondevine6014]

Does your inverter have phase shifting capability? If not, a external phase comparator to compare inverter with grid phase and then just backward charge through inverter.

[@TL-rp8yn]

I splurged and bought the Victron Energy Blue Smart charger for my solar power station to give me the option of grid charging. No regrets.

[@OffGridGarageAustralia]

I don't have a grid any more...

[@Todestelzer]

I have to charge eBike 42V battery packs I made now too. Bought now a RD6006w for it. A PSU with 60v 5a 400w. 110€ from China.

[@jamesthebond0072]

Hmmm interesting not charging mine with a solar unfortunately but I'm looking everywhere for some information on my 48v 20ah battery but they recommended me the 55v charger and it stuffed up in no time thought it was the battery or the bms and just about gave up on it and then found out it was the connector anyhow now I'm using a 4iv charger and I just finished up cherging my 48v20ah battery and it's even the first time I've had to charge it very very well on power but mine is charging to 54.4

[@ArthurDentZaphodBeeb]

I don't understand - why not install more panels to help charge the Tesla?

[@OffGridGarageAustralia]

Watch my other videos. More panels are already in the garage. I can already charge the Tesla with this system just fine.

[@geraldgrogan]

If you had instead purchased the Victron Multiplus 2 3000va 48v instead of the Victron Phoenix Inverter , you could have done this all with one device, and you would not need the Victron charge controller nor would you need the separate 48 volt charger you just picked up.

[@andrewradford3953]

I'd like to do the same for my mower conversion. I'll brace myself for price but I'm buying quality.

[@OffGridGarageAustralia]

It's an off grid system. I don't have grid power any more.

[@mindovermatter3988]

If you want to save a bit of money and make sure that your fused connection is as good as possible. You can take two Spade connectors side-by-side heat shrink them together and put an ATC Style Automotive fuse. That way you know that the cable is not only good wire, but it's super cheap and easy to make. Just trying to give you a heads up on something you may not have known

[@perinblanchard6747]

ATC/ATO are only rated to 32v (as are most electrical devices from the automotive world).

[@muddy11111]

So what is the advantage of a charger ? We have power losses in the mains charger, battery and inverter. Why not just plug the car into the mains once your battery is as low as you are prepared to take it ? and avoid these losses.

[@OffGridGarageAustralia]

I said this in the video what I used it for...

[@DIYwithBatteries]

I love to watch your videos Sir :D

[@mjp0815]

Why didn't you just put the xt60 on the charger? Then you don't need to remember that bloody name. Xlrs

[@krameris1000]

Good morning 🌄✌️

[@Tezza66]

just buy a meanwell power supply. some of them are adjustable too. you find it much more reliable in the long run.

[@randylenart9674]

That was a bird dropping hehe 🤓👍🇺🇸

[@wasifsyed1085]

you can get 5 more of these to charge your battery at 30a

[@jamesthebond0072]

Ohhh wow thank you you just explained it haha as I was writing I was till watching and you just answered my question hahaha wow yes so but now I'm back to 48v 2a charger and irs still has charged it to 54.4 Jesus I was scared okay now I'm feeling confident that everything has worked properly and have just got the information I need it thank you very much 🙏😎💪

[@paul_dz]

Unless you plan on running an extension cord from your house, you may have to change the name of your site - if you plan on using this charger on a routine basis.

[@smde1]

He could just use a cheap generator and it would still be "off-grid"

[@neliosamch3195]

400w panels will solve the dilemma.

[@smde1]

@@neliosamch3195 The closer you live to the equator the more true your statement , but conversely, the further away from the equator you live the less true it is as well. Oh yeah, and then there is night time .... so then there's that.

[@neliosamch3195]

@@smde1 I live 4,653.52 km) north of the equator, in the northern hemisphere. Zone 3 and my plan is to demonstrate that yes you can live independently from the grid even in snowy and cloudy days.

[@upnorthandpersonal]

@@neliosamch3195 I'm at 63 degrees north and already doing that.

[@Bennyboy-dog]

It claims 240W, delivers 202W, actual capacity is 20% under claimed, however most of these chargers from other advertisers claim 4A, which is 200W, so aside from the BS from the seller it's spot on. Andy, I sure wish you wouldn't promote Amazon - the AliExpress offer is way better at around $16 cheaper when you include delivery.

[@DCGULL01]

You electrical guys can always find 'deals' on alternate power sources? I'm so ignorant that I'm completely baffled by the process. I would love to turn a power brick into a 12v charger for my brand, spanking NEW 50AH LiFePO4 battery, but- I'm TERRIFIED that I will totally & completely screw it up forever! Dan from 'Freely Roaming', 'LithiumSolar', 'David Poz', 'DIY Solar Power with Will Prowse' & you understand it well enough to take a crazy e-bike charger and make it work! I, instead, must spend silly money on a NOCO Genius, which almost physically hurts me (just kidding- getting shocked actually physically hurts me, Andy!) But that's because I'm so friggin' cheap! Thankfully, I know the line between my 'frugality' (much nicer word) & my baseline knowledge! Hahaha... I can't wait 'til I grow up (he says at 56 years old)...

[@waynehobbs5175]

I totally relate to you but I am 62 years young but gradually 'getting it' thanks to Andy and Will P and other gurus. Hang in there. I bought 2 x 135AH lifepo4 batteries to upgrade our caravan. Am getting there through these awesome sources!

[@DCGULL01]

@@waynehobbs5175 What a great group hangin' with Andy? Everyone wants to help, is very supportive of others- I greatly appreciate the support here. It's not whining, it's really just lacking confidence to attempt it. But, I love low cost, safe (fused, Andy!) solutions that work with a little 'klugeing'. I'd love to be able to 'MacGyver' a charger out of a laptop brick in a pinch, but honestly, I still struggle understanding how different 24v is from 12v...

[@neliosamch3195]

@@DCGULL01 Sometimes, deviating a little bit from safety code will help understand the difference of high and low voltages.

[@habana7638]

@@DCGULL01 The best advice I can give you is, try to understand ohms law firts, to understand the relationships between Voltage, Ampere and Resistance, it's really not that difficult...

[@DCGULL01]

@@habana7638 Thanks Jan- I WILL do that! I grasp the water hose concept well, but- the relationship between Volts/Amps & watts sort of eludes me. If Ohms (resistance) gives me the missing chunk- I will try to share the info with yet another 'on the edge, testing the waters' person. I feel- the more we (the larger We) know, the less dependent WE are. All of these math equations remain the same, it's understanding the relationship between them makes them work with sense...

[@Daraghfly]

I have the same cheap charger for my ebike, be aware the fans are known to fail, if this happens it will burn out your charger. Probably not a good idea to leave it over night.

[@OffGridGarageAustralia]

Thanks for the tip! I used it only twice so far, more like an emergency backup as I will solely charge from solar.

[@Josh-b3c]

Maybe you should have got a victron inverter charger instead of just the inverter

[@jerrygundrum1]

I would have put heat shrink on those connections. But that's just me. I miss the point of charging your battery from ac... You are better off not charging the battery to 100 percent

[@larrywilson1277]

Your ready for a new soldering Iron.

[@jerrygundrum1]

Or just replace the tip.....retinning is your friend

[@smde1]

Calling an off-grid battery system a "solar" system is a mis-nomer . I think it makes more sense to call these system "Least expensive available power systems" (LEAPS) and use whichever power is available and the least expensive to charge it. (lol - you were being bedeviled by naming issues early in the video )

[@emekauche5985]

PLEASE , COULD IT BE POSSIBLE TO USE LAPTOP BATTERIES ASSEMBLED IN LARGE STRINGS AS YOU DONE TO POWER HOMES?

[@panospapadimitriou3498]

this charger is not possible to overcharge your pack.. it can barely help it balance a bit

[@randylenart9674]

Better off just pluging your car in to the grid that day

[@GEORGE-jf2vz]

if its made in china always derate their specifications by 1/3.

[@tscherenkov9461]

Oh chinese 5 Amps.

[@teardowndan5364]

It is a CC/CV power supply, so it may just have a sloppy transition between CC and CV causing it to roll back current before hitting the voltage cap, plenty of cheap PSUs have that feature/flaw. May want to try that again when the battery is approaching under-voltage cut-off to see how much current the charger can deliver when nowhere near its voltage limit.

[@toastiesvanbuild4644]

great as usual

[@oneeyedphotographer]

09:19 that's what it's for.

[@mididoctors]

XLR

[@mindovermatter3988]

I was just thinking & NOBODY SHOULD EVER TRY THIS, YOU HAVE BEEN WARNED. What would happen if you plug that charger into the inverter and then try to charge the batteries. Hypothetically of course do you think it would charge or what? Anyone have suggestions on this. Please keep this hypothetical and nobody try to replicate that and get hurt potentially damage your batteries or cause a fire. Just merely a thought

[@kevroodenman3283]

uff grid

[@randylenart9674]

Dont have old reliable gas car for spair? 🤓👍🇺🇸

[@PhilemonVic-o5i]

Johnson Kenneth Jones Deborah Robinson Amy

[@offgridwanabe]

You do a lot with such a small system. I would need more panels because I am a solar power pig.