Xiaomi Himo Z20 vs Himo C20 - Comparison Review

[@tomsharkey243]

Excellent video. So many questions answered. I wish all ebike reviews were so informative and well made. Many videos made by others do not cover the basic questions. Well done and please make more videos. Cheers.

[@elProducente]

Glad it was helpful! Hope I can do some more videos soon.

[@topvideo3112]

I like your way of explaining the specs... And we are waiting the comparison.. Thank you

[@elProducente]

Coming soon

[@ki8417]

Z20 is the best choice, smaller space fits for car and easy to carry c20 is durable that solid straight body is tough and can use even rough roads

[@TheRussianLondoner]

Awesome video comparison, THANK YOU SO MUCH. Now I want Z20🔥🔥🔥

[@wriches]

Great video, thanks. Hope to see more of these.

[@elProducente]

Hope I can do my Fiido D11 comparison soon. Thanks for your feedback!

[@iainmann]

Thank you for this video. I've been looking around for an affordable ebike and this persuaded me to get the Z20. Very happy with it. Really useful video and channel.

[@elProducente]

Glad I could help! Thank you very much!

[@efal07]

Gracias, me sirve mucho el video. Saludos desde Perú.

[@DraxTheDestroyer]

You literally answered any and all questions I've had, nice work!

[@elProducente]

Glad to hear it!

[@mustaphaanimshaun2017]

Hi I just come across your blog I really like the way you explain about the two bikes.

[@elProducente]

Thank you very much, I'm glad the content was helpful!

[@keybraker]

Exceptional video, great review and very detailed.

[@elProducente]

Glad you liked it!

[@sabbirshuvo4201]

You possibly covered everything in this video that a buyer might have questions about! Great review. I had to give a thumbs up for your dedication. 👍

[@elProducente]

Awesome, thank you!

[@Kindle3000]

great comparison and very clear explanation, it is the first video I see that explain very clear the differents mods, thanks! (thumbs up!)

[@elProducente]

Thank you, Glad it was helpful!

[@DavidAddis]

Brilliant review and explanation, thank you!

[@elProducente]

Glad it was helpful!

[@MsAdH17]

Nice review.. easy to understand and well put review. Good job

[@powerlvl15]

Very comprehensive video straight to the point!! Nice video man. Congrats.

[@elProducente]

Thank you very much for your feedback!

[@Teelsambal]

They should add a suitcase for the bike which is attachable to bike as storage. Hanging behind the bike with wheels.

[@danielzenelaj4241]

Thank you for explaining the differences i cant wait to get myself the z20 🙏

[@elProducente]

Thanks for the feedback, glad the video was helpful

[@shafiqshahar1456]

nice explanation and review ..good work. the main concern is the battery life. unless ur country got good support for xiaomi item then its good

[@davidj.7779]

Nicely done and very helpful video. I'm considering a Himo Z20 among others. I especially like the 20" tires. I'm in Thailand and I'm an old guy. Arthritis limits my riding a standard bike but an E-Bike fits my needs perfectly. One issue I have with the Himo. I would use the bike to go shopping at the market and I see no means of carrying any cargo, I looked closely on your video and I could see no basket or rack attachment points. Do you know if any are offered as accessories? That would be a deal killer for me which is too bad as I see few other E-Bikes available locally in my price range with 20" wheels.

[@elProducente]

There are lots of bike racks available that mount to the seat pole. (Others also have stabilizers on the side) Many accessories that could be attached: bit.ly/36PxHwP

[@ahmadfawwaz3443]

Great content!

[@arossaos344]

Thanks.. your review is very detail..

[@elProducente]

Thank you for your feedback!

[@irmudman8103]

Hope you are doing well, looking forward to your comparison of xiaomi and fiido e bike.

[@peterteal880]

I’m glad to see you upload a new video. Where have you been? LOL

[@elProducente]

Not much time for KZbin recently. I was very happy that I finally uploaded another video

[@feiabm2005]

Superb, Brother. thank you.

[@elProducente]

Thanks for your Feedback!

[@hugoleote]

Best Himo review on youtube, by far.

[@elProducente]

Thank you very much!

[@gurosafilipino2012]

Perfect Review. Very informative.

[@elProducente]

Glad you liked it

[@RoyMcAvoy]

Thank you. Nice review

[@elProducente]

Thanks for watching!

[@SamiLuo]

Hey man, you finally upload your video! Haha!

[@elProducente]

Took me a bit longer than expected

[@rarbiyoutube]

👍Superbe vidéo ! Bien détaillée ! So good ! Let's not forget the diameter of the wheels, it is often the case, not you especially but everywhere, even for the presenters of Electric Scooters.. But I monitor when there is a close-up

[@elProducente]

Thanks! 👍

[@akapog]

Best video, well done.

[@elProducente]

Thank you very much for your feedback!

[@jacklupad]

Really appreciate such good video.

[@elProducente]

Thank you very much!

[@tuanlenguyenminh4461]

really enjoy your review

[@elProducente]

I appreciate that!

[@Machomen37]

Magnifico video, me ha servido de mucha ayuda, gracias amigo !!! me suscribo y like !! un saludo desde España

[@doctorgamerplayer]

Hola, cual de las dos es mejor? No entendí en ingles.

[@Machomen37]

@@doctorgamerplayer z20

[@doctorgamerplayer]

@@Machomen37 Gracias!

[@yongyuthruanta8174]

Very informative VDO, Thanks

[@elProducente]

Glad you liked it

[@dtz1000]

Where is the video comparing these to the Fido bikes?

[@elProducente]

Not done yet as I had problems with my Fiido (will mention it in the upcoming video) ADO A20 v Himo Z20 will be released in a few days

[@edg873]

Thanks for video

[@aamirshareef5445]

Thank You. You explained it so clearly. Good content 👍

[@elProducente]

Glad it was helpful! Thanks for the feedback!

[@ReubenSamuelMHS]

Thanks for the amazing view! I’ve had a C20 for just under a year. It’s been fun but I’ve developed a few issues rather quickly. 1. The handle bar is a bit wobbly when locked and the only solution I have to make it feel “tight” when riding is to place a piece of cardboard in between the gap where it the bar and frame meet. I haven’t figured out any other way to tighten / modify the mechanism. Any tips in this area? 2. The frame has started to sound a bit “creaky” when riding and I can’t for the life of me figure out precisely where this is coming from. Have you experienced the same? Thanks again for making this video. Keep it up!

[@elProducente]

No, haven't made these observations but I will check again since you pointed it out

[@NARUdaARC]

1. The easiest possible fix is to check the quick release that is holding your handlebar and the stem. If it is already loose, then change it. You can also opt to upgrade to a carbon handlebar which is quite cheap nowadays. 2. Creaky sounds usually comes from damaged bearings. Usually it is the bottom bracket, you can also check the wheel and the headset bearing. It is also worth to tighten back all the bolts on your bicycle to the manufacturer's specified torque. A quick visit to an experienced bike shop would be able to fix your problems.

[@gsx1340b]

danke für das video. jetzt muss das „Zett“ nur noch in mein Auto passen ;)

[@elProducente]

Mit umgeklappter Rückbank passt bei mir auch das "Ce" ;)

[@thelongboarddude95]

Thanks man!

[@elProducente]

Happy to help!

[@MJTaylorZokk]

Can you change the forks to suspension forks and can you add a pannier rack?

[@elProducente]

Not sure about the fork, there is a rack: bit.ly/3yxeUni

[@keeskachel8696]

Bikes are okay, I had a HIMO C20, but you have a problem when it doesn't work anymore. Parts are hard to come by and most of it is proprietary which makes it hard to replace. I had my bike for 3 months and it started to show unknown/power/battery problems. after trying everything, contacting the seller (Who kept saying that it was my fault) and also using other parts with no results i had to throw away the bike because it was useless and impossible to repair. So potential buyers beware.

[@elProducente]

Which problems were you facing? Which part of the bike broke?

[@1Surinamer]

And this is what im afraid of when buying, im not a wrecker or something, but im going to feel helpless because i know its going to be hard repairing when the manufacture is in China. And i am no handyman either. But i still wanna buy because i always love these kind of bikes..so i will wait till the price drops more and just take the risk 👍

[@elProducente]

@@1Surinamer As for the hardware: most of the parts are standard bicycle parts, they can be repaired/changed with standard parts. For example I changed the pedals to aluminum pedals. Same goes for brakes, gear shift, light - could also be done by a local bicycle shop. As for the specific electronics - you can get controler, display, battery and other Himo replacement parts online. I don't think repairing the bike will cause problems.

[@damionsinanan103]

Can you please explain the pros and con in comparison to the Fiido D11? I dont like the fact that I cannot lock the battery of the Fiido but what are the other nebefits of Z20 over Fiido D11?

[@elProducente]

I'm doing the video soon as I already got D11 (hint: you can subscribe to get notified when my video is out ;) ) In the meantime I listed all pros and cons on my blog: bit.ly/321SVpm

[@gabqurizen1651]

Love the video. Thank you for sharing. If I am on P and not using the battery. Do you think I can bike for around 30 minutes without turning into a red lobster? Thank you

[@elProducente]

The bike is pretty heavy, but it’s not too exhausting. Once you reach a certain speed you probably don’t notice, acceleration requires more force than on a regular bike. Some people mentioned they want a bike which they can use either electric or not. That’s why I mentioned it. Good to see that removing the battery on Z20 is an option.

[@slimjones1693]

How long does the battery last on fully electric/throttle mode (no pedalling)?

[@amaafdo2766]

Nice video, what about the garancy? in italy? Thanks

[@elProducente]

When ordering from Geekbuying the bike is shipped from Poland and it takes about one week (no further taxes and customs). When ordering you can select to pay a little extra, then you can ship it back to Poland in case anything is wrong with the bike. You can see this option on checkout: bit.ly/2Cduj3p

[@luenywoon]

Thanks for this video. Will you be doing the comparison for z20 and the fido d11 soon?

[@elProducente]

That's the plan!

[@HeartPumper]

Welcome back! That hiatus took you bit too long :)!

[@elProducente]

Yes, I hope I can do my next video very soon ;)

[@spicehedge]

Could you please show us how to disconnect the rear wheel motor and change the tire?

[@oiengepera]

nice comparison ☺️

[@elProducente]

Thanks

[@edgar121190]

Could you advise me? I plan to buy an electric bike for cummiting. I will be biking on average 20 km per day (in NL with rain and wind). I have some problems with my knees. If I am going to ride a long distance (20 km) every day, do you think this foldable e-bike would be able to do the job? or do you think I should better get an unfoldable bike with bigger wheels? Please, give me a hand with this. Kind regards

[@elProducente]

I also use it for commuting (24km roundtrip) and Z20 does the job quite well. I think 20" wheel size is a good compromise of having a small compact bike to store and large enough wheels for driving comfort. I guess larger wheels add to the driving comfort, but I'm fine with it.

[@rafaelcunha5360]

@@elProducente But do you have to charge the battery everyday?

[@elProducente]

@@rafaelcunha5360 yes, I charge it daily

[@rafaelcunha5360]

@@elProducente wow, your reply was very quick. Thanks for clarifying. I got the bike today, but the only concern is when the battery worns out and I need to buy another one, because it seams that it's pretty hard to buy one to be delivered to the UK. The bike looks nice , but I think that I will return it.

[@eladguitar]

Hey, thanks for the videos! I've read your initial impressions review and comparison between the ADO A20 and the Himo Z20. It's been a few weeks since the review, so i'm curious if you still think the same way, and you still think the A20 are a good purchase. My only "concern" is that it's an unknown brand (to me) compared to Xiaomi which is very well known and reputable, however the little details and improvements on the A20 sound super convenient and might be a better fit as my first E-bike. Would love yo hear your thoughts. Thank you!

[@elProducente]

*Black Friday Deal 2023 - already available* Use code " *HIMO-40OFF* " get Himo Z20 MAX for just *€749* www.himobikes.com/?ref=cld55l85

[@only4fun38]

Great video thanks...what about reliability in the long run? Also is there any decent warranty on this what's Xiaomi after sales service like?

[@elProducente]

Thanks. Until now I haven't had any issues with both of them. Therefore didn't contact support so far.

[@davidtan2206]

Excellent video! any update about the comparison z20 vs the D11?

[@elProducente]

Coming soon! Still working on it. Currently working on a comparison with ADO A20 which is a great bike I recently received. www.elproducente.com/travel/ado-a20-vs-xiaomi-himo-z20-vs-fiido-d4s-pro-x-folding-e-bike-comparison-review-manual/

[@javierfileiv4758]

Thanks for the review...would you recommend it for someone with 90 Kg and 1m80? Thanks

[@elProducente]

Yes, I also about the same height and weight

[@michaelferrada2143]

I Bought a Z20 in July this year, so far so good, but the first problem that erased, just after using the bike for a couple of months, is exactly the same as Reuben Samuel, is complaining about... His text: "It’s been fun but I’ve developed a few issues rather quickly. 1. The handle bar is a bit wobbly when locked and the only solution I have to make it feel “tight” when riding is to place a piece of cardboard in between the gap where it the bar and frame meet. I haven’t figured out any other way to tighten / modify the mechanism. Any tips in this area?" The problem is that due to the friction, the parts that are in contact with each other, the bar & the frame, have started to wear out, so now there's still a bigger gap and the bar is super wobbly! Also I fell of the bike and the free stand broke! As it's and aluminium piece cannot be welded, so I need a replacement. Last but not least, the bike when was delivered in a box, by the delivery truck, had a hole in the box, exactly where the part of the frame takes all the weight of the bike, which creates friction with the box (when in transit), the spot, where there's an air pump installed. I assume, there's bolt missing that hold the air pump, Correct? This part was missing, so we created a plastic cover and taped it around with duck tape! By the way, is there a dealer or representative in Portugal, that might assist us with these issues!? Where can we get spare parts for this bike!?? Thank you! Michael Ferrada

[@ricardoquintero4348]

Producente; ¿sabes de alguna bici tipo Himo Z 20, pero sin ser plegable ni electica?... gracias.

[@elProducente]

As far as I know Himo only does ebikes. I'm not that familiar with non ebikes, sorry

[@tairua1]

Very good, thank you.

[@elProducente]

Thank you too!

[@gideonMorrison]

Hello thanks for the review. Why do you say the assisting mode is much better on the Z20 than on the C20? Aren't they the same?

[@elProducente]

Hi, it feels a bit different. Maybe because one bike uses a torque sensor and the other a speed sensor.

[@gideonMorrison]

@@elProducente alright. So in practice this means faster acceleration or smoother maybe?

[@elProducente]

I’d say it feels more like an assist mode. Depending on how fast you pedal you get supported. With Fiido e.g. pedal assist feels like you give full throttle when touching the pedals. I prefer that with Z20 it feels like riding a bike made easier. Not going full electric by controlling it with the pedal. Hope this describes it better

[@gideonMorrison]

@@elProducente makes sense. Seems like the Z20, from your wording, feels more intelligent than the C20 regarding the assist mode...

[@elProducente]

Yes, that’s about it

[@isabelleanelli565]

U didn t spoke about autonomy of battery??

[@elProducente]

can you elaborate a bit, not sure what you mean

[@gyozototh1548]

Thanks! Wenn we can have the comparison to FIIDO?

[@elProducente]

Working on it, had some issues with D11. Currently doing a comparison with ADO A20, which I recently received and really like: www.elproducente.com/travel/ado-a20-vs-xiaomi-himo-z20-vs-fiido-d4s-pro-x-folding-e-bike-comparison-review-manual/

[@htinaungkyaw2383]

With Parking mode by long press button, how does it assist to the bike?

[@elProducente]

It doesn’t assist at all, it’s just turned on so you can use the light for example

[@manu.yt25]

Nice video, too bad you doesn't do more like that anymore

[@elProducente]

Working on it. Currently doing a video Z20 vs ADO A20 and a comparison with Fiido D11 will follow. Took a while to get the bikes

[@manu.yt25]

@@elProducente Nice, I can guess. Keep up the good work! 😊

[@LUISMARTINEZ-wu6bh]

Hi where to buy it from USA?

[@volkki]

Es posible cambiar el manillar por uno más parecido al BMX?

[@09H51A1243]

Good explanation……

[@Spectacles641]

Great video, thanks. How does the c20 drive compared to the Z20? Do you notice any difference?

[@elProducente]

Not much, little difference in the modes, but in general very similar

[@mrdol]

hey. I'm an ex owner of Fiido D1 bike. What I was really missing in that bike is the gear shifts. In theory you could pedal to go faster than the speed the electric assist pushed you to, but in practice you had to pedal very, very quickly with low resistance on the pedals so you weren't really able to go faster than 25-30 km/h. How's that on the Himo bikes? Does it help a lot that there is a 6 gear system in place? Can you go fast on these bikes (>30km/h)? PS. Nice review, thanks!

[@elProducente]

The gear shifts are great to adjust the strength for the speed. You can go 25km/h max with electric power and then paddle to go faster than 30. I also did a video when comparing it to ADO A20 which can be unlocked to go 35 on electric power

[@rarbiyoutube]

@@elProducente Hi, fiido vs C20 or Z20? What did you mean? .. Regarding the comment of the speaker...

[@edg873]

Do you have video for HIMO C26?

[@elProducente]

No, next video I'm planning to do is Fiido D11 vs Himo Z20. Then I'll see which bike I'm getting next

[@andi1962]

Ist das Fahrrad für den deutschen Straßenverkehr zugelassen bzw. kann man den Gasgriff entfernen?

[@elProducente]

ich kenne mich mit den deutschen Regelungen nicht im Detail aus. Es gibt eine Version für Australien wo der Gasgriff deaktiviert ist.

[@enzoconcepcion]

if you were to choose between the Z20 and the Fiido D11 which would you choose?

[@elProducente]

I tried to answer that on my blog as there are so many details to consider: www.elproducente.com/travel/xiaomi-himo-z20-vs-fiido-d4s-vs-fiido-d11-20-inch-folding-e-bike-comparison-review-manual/ In a nutshell I would say D11 for commuting within a city. Z20 when you are also going on unpaved roads.

[@XanaFernandes]

Great comparison and review. Thanks! Too bad it's illegal to ride the Z20, since it doesn't need pedal assistance to keep the electric motor going...

[@elProducente]

You could disable the throttle, but with assistance it only goes 20 km/h

[@XanaFernandes]

@@elProducente disable it permanently? Police is ‘too competent’ here… if they even dreamed it could go without pedalling, I’d lose the bike in 5 minutes.

[@itachigamingyt1799]

Where do u live my friend

[@XanaFernandes]

@@itachigamingyt1799 Portugal, my friend.

[@itachigamingyt1799]

@@XanaFernandes do u recommend me a good legal e bike at 250 wat with limit at 25 kmh if u now any and u have time ?

[@ninefoxstar]

great video, which one do you think is good for riding to work at 9.3 KM every day?

[@elProducente]

I prefer the Z20 as it can fold. In terms of driving/handling they are very much alike. Depends on the price you can get

[@shaunkong62]

Hi! Want to know when you loose all your electricity due to "forget to charge" then can you still peddle the bike home. How far can you peddle with any peddle assist because you forgot to charge..? Please can you answer because cannot try out a ride myself..before buying..?

[@elProducente]

You can ride it just like a regular bike. Absolutely no limitations or restrictions. It's just a bit more exhausting as the bike is heavier because of motor and battery

[@kostasl.8607]

Nice video. I just bought this bicycle yesterday and I don't know how to charge correctly the battery for first time. Can you please tell me? I haven't used the bike yet.

[@elProducente]

Battery is partially pre-charged when you get it. I would charge it until the charger light turns green. But check the manual of there is an updated procedure!

[@kostasl.8607]

@@elProducente Yes it's three lines or two pre-charged. OK thank you very much.

[@renelogar]

Hello there, I need help! My girlfriend has himo z20 and when I turn on the power and twist the handle the motor does not start. Do you have any idea what’s wrong?

[@elProducente]

in some countries there are versions sold that only work with pedal assist (I think in Australia it is the case to comply with local law)

[@generaltorpido8294]

Hello can u help me what to choose z20 or d4s ? I found them at the same price.

[@elProducente]

Hi, D4s has a built in battery, so you always have to carry the bike to charge it. On the other hand you can unlock the speed of D4s. There’s maybe a third alternative, I just received ADO A20 and working on my video. It has suspension, speed can be unlocked, battery is removable,... combines the advantages of both of them: www.elproducente.com/travel/ado-a20-vs-xiaomi-himo-z20-vs-fiido-d4s-pro-x-folding-e-bike-comparison-review-manual/

[@dejedejsson]

ADO A20 is too heavy 28 kg with battery!

[@elProducente]

​@@dejedejsson checked today with a scale: ADO A20 has a weight of 21.2 kg with battery inserted and fenders mounted. (28kg is the weight of the whole shipping package including packaging, tools, charger, airpump,...)

[@dejedejsson]

net weight is 24 kg according to ADO, must be the first time in world history a Chinese company specifies a specification that is worse than reality.

[@dejedejsson]

I myself prefer that the battery is built into the D4s, otherwise it will be stolen. Common to all these bikes is that they have too weak engines. ADO costs more than a D4s, D4s are probably still most bang for the bucks.

[@Fiz_316]

thx!

[@cgpg6370]

Could you make a video of fixing puncture on the rear tyre? I can tell the Fiido D11 is bad. Real bad.

[@elProducente]

I have one and also got some issues, will do a video soon. I'll do the tire video as soon as I have an issue with it - good idea!

[@eBoard3R]

⚡⚡

[@irfanbektas699]

Thx fo that!!! Going 2buy 😎

[@elProducente]

Glad the video was helpful, check out the latest coupon codes and prices here: www.elproducente.com/travel/ado-a20-vs-xiaomi-himo-z20-vs-fiido-d4s-pro-x-folding-e-bike-comparison-review-manual/

[@georgesmith3022]

does the saddle go higher? it seems too low for me

[@elProducente]

I'm 1.83 and the saddle goes why higher than I would need it.

[@twins8131]

Hi, How do I get a replacement charger for himo z20, I lost mine while moving, I will appreciate anyone with a link to a compatible charger

[@hasan_z]

what is the difference in Himo Z20 "china version" and Himo Z20 "europe version" ?

[@elProducente]

As far as I know there is no major difference. - I heard that the Chinese version is beeping requently due to requirements, but you can easuly disconnect the speaker (shown on my blog). - Maybe the power plug is different, but it's a standard cable that can be replaced.

[@murugnimai]

Great review but irritating background music

[@elProducente]

Thanks for the feedback. Wasn't sure if the music is irritating or makes the video more fluid and entertaining

[@prakashhumanist7248]

Nice video

[@elProducente]

Thanks

[@pexxito]

buen video

[@rikigilang6266]

Nice..

[@Bluey_FN82]

Has anyone tried upgrading battery to 48v I noticed in settings there is option to change to that

[@elProducente]

The controller/display is a part that is bought from a 3rd party supplier and therefore offers multiple options for different bikes. I haven't tried to change the battery. Not sure if you also need to change motor or controller in the box below the saddle

[@JoeCZ-t6h]

Hey gyes actually i bought C20 but i have problem with charger hole it's doesn't fit ! the bicycle brand new ... what should i do?

[@elProducente]

Contact the seller, charger for C20 and Z20 seem to be slightly different, maybe the wrong one was included

[@davidpranatamurti4303]

does it charge the battery when you peddle the bike?

[@elProducente]

No, there is no energy recovery

[@fortboy66]

Is the speed display changeable to miles per hour?

[@elProducente]

Yes, when powered on Press M button for about 8 seconds to enter the menu. The select "S7" with +/- button and change the setting Confirm and power on/off again You can find more info on the menu settings in this article: www.elproducente.com/travel/ado-a20-vs-xiaomi-himo-z20-vs-fiido-d4s-pro-x-folding-e-bike-comparison-review-manual/

[@neurosomat]

perfect

[@ducthanhnguyen2424]

I’m listening on your video but I’m try on my Thorttle on Himo Z20 still not working

[@elProducente]

Hi, the throttle should work in Mid and High Mode, although there are some versions for specific countries where the throttle is disabled

[@jamalibrahim3187]

how much dose it cost for the z 20

[@elProducente]

722 EUR bit.ly/3mMIDVd Coupon Code: GKBCGCC

[@عرفاتعرفات-ط8س]

How many kilos can this beautiful bike walk, whichever is better, with your SAMEBIKE 20LVXD30 or Hmo 😊

[@elProducente]

Max weight is 100kg Not sure about Sambike, I prefer the design of Himo so I went for it

[@عرفاتعرفات-ط8س]

@@elProducente How many kilos can this bike walk? 😍

[@elProducente]

@@عرفاتعرفات-ط8س 100kg

[@mirceacoliu5590]

Does anyone know where I can buy a second battery for Himo Z20?

[@elProducente]

A second battery is available on the official Himo store on Ali: bit.ly/3J7ag4v

[@besenok3809]

My Himo C 20 :-)

[@robindepilro9795]

Do u need some kind of key to unlock it ?

[@elProducente]

You need the key to unlock the battery