24V Battery Rebuild for Bosch Rotary Hammer Drill | Bosch GBH 24VRE

This rotary hammer drill is working fine, but the battery cannot be recharged. I need to rebuild these batteries The original battery is built with 20 cells of NiMH, fully charged voltage is 24V. The lithium battery 18650 cell fully charged is 4.2V, to get 25.2v we need 6 cells in series (4.2V x 6 = 25.2V). The battery after rebuild is 24V 6.8Ah while the original 24V 1.2Ah
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HiMH 20cells x 1.2V = 24V
Li-lion 6cells x 4.2V = 25.2V
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* Battery rebuild kit in this video
12 cells of lithium 18650 3.7V 3400 mAh
1 BMS 6S30A, it can provide power 24V x 30A = 720W
1 25.2V Li-ion charger
1 Dc female power jack
Battery washers
Battery nickel plated
*Note
In the video I'm error in counting 20 NiMH with 21.
I hope you find something useful & enjoy this video!
I am happy to receive your feedback, advice, suggestions to improve myself.
!!! I apologize for the mistake if I have made in this restoration !!!
**I still keep some parts, I want to save the world's environment**
Thank you so much for Likes & Comments

[@yazo-pq7mp]

It is fascinating how technical progress combines old technology with new! I worked at Bosch in the Blaichach power tool division and I deal with the machines on a daily basis. The GBH24 was launched on the market in February 1984, an unbelievable sensation (!) I can still remember very well when the first devices came to the dealers and we had to be presented. The craftsmen and industrial companies literally tore the machines out of the hands of the sellers ...> you could only get a good 30 minutes. work with it, but that didn't matter (!) For the first time, customers had the option of drilling holes in concrete far away from the power grid or on construction sites. At that time, battery technology was still in its infancy and after a few years the devices were repaired where the cells had to be replaced. Today 37 years later I am retired and am amazed again and again how far the technology has advanced with the LION batteries and that there are still people who receive these devices and even work with them!

[@ZaftDima]

У меня есть два таких аппарата абсолютно новых, я бы хотел отдать их в музей но таких не нашел

[@xfiles4484]

Please invest in batteries more suited for this operation. The 18650B from Panasonic is only rated at Max. continuous discharge current of 4.875A .The cells in most current LION battery packs for power tools are rated for 15-20a continous discharge. I would look in to cells rated for 20a discharge such as the Samsung 25R INR or LG HG2 cells. Great videos!

[@gear_show]

Okay, thank you so much for sharing!

[@E-hab]

Good info 👍🏼

[@mitevm]

Yep, my first attempts back in the day to restore old NiCd tools failed for the same reason. You need high drain cells.

[@petkovasilev1419]

I'm sorry to disappoint you, but those are not Panasonic cells nor 18650B. Don't get fool by the shrink wrap. Panasonic don't use that kind of top button.

[@troyna77]

@@mitevm have you ever revived nicad batteries? I've seen people use a 6volt or 12volt battery charger to shock a used nicad battery that's not holding a charge. I think they called what happened to the nicad battery was "treeing"? Anyway was wondering if you had revived any sub c size nicad and if so how long did they last(estimated charging cycles)???

[@barthanes1]

I had a good chuckle at the NiMH battery snake. 👍

[@gear_show]

I'm glad you like it :D

[@TV-er5jl]

good!!

[@BICIeCOMPUTERconGabriele]

For power tools batteries it's way better (I sould say "mandatory") to use high drain cells instead of high capacity ones. Whatch out overheating of the high capacity cells under high loads!

[@gear_show]

Okay, thank you so much for sharing!

[@marsdeimos4301]

​@@gear_show If these are genuine Panasonic cells, maximum allowed drain should be 2C, or 6,8 A. Also, unless I'm mistaken, these are flat top - without protective circuit. With 6 parallel pairs in series, that increases the maximum current to 13.6 A, but at that current the voltage drops fairly quickly. It should stay above the nominal voltage of 3,6V before draining 15% of capacity: pdf1.alldatasheet.com/datasheet-pdf/view/597043/PANASONICBATTERY/NCR18650B.html Depens how much the motor pulls, as long as the voltage doesn't drop under 3,6V, your pack should be able to push out about 300 Watts, which sounds like enough for a cordless rotary hammer of this size ... in fact, I think it wouldn't pull that much, considering it was running on NiMH before, which aren't famed for high discharge current (as opposed to older NiCd), so you might be just fine in this case. But it certainly doesn't hurt to be cautious over what cells are used when refurbishing a cordless tool battery. Also be careful with the charger, because panasonic specifies charging current of 1625mA, with your 4A charger you're pushing 2 amps per cell, which might be a little too much.

[@andycapo9you]

@@marsdeimos4301 I was about to comment the same; 2ah charge per cell is way too much. Usually I don´t rebuild old hammer batteries like this for old high drain tools because it is not safe to use it; they lack of any battery drain circuitry and it can result on a very pist client complaining about it not working after 2 or 3 uses... Always build greater battery than wht the motor or aplication needs, not the oposite!

[@zeeshanghous6740]

@@gear_show kar rahi yaar

[@shankardass9648]

As I saw ur notification immediately opened love the level of perfection ❤️❤️

[@gear_show]

Oh really, thank you so much!

[@robertoamaro5352]

The Ingersoll Rand 114GQC Air Hammer kzbin.infoUgkxqqoaX03nrziKwF7Bjjcc71YzLEleMvOS was just the tool I needed. I Use it to remove stuck bolts. If held at the right angle you can cut slightly into the bolt. Then turn the air hammer to where it will hammer the stuck bolt to unspin the bolt. Given a little practice it works great. This air hammer gives you the control needed to get the job done right. Very powerful yet still does not seem to have as much vibration as other guns I have used. One of the best I have gotten my hands on.

[@averyjamesbrooks]

This is my new favorite channel. Thank you.

[@gear_show]

I'm so glad you enjoy it!

[@jessearrazola4283]

Piece of art, I love your channel bro greetings from Colombia

[@gear_show]

Thank you so much 😀

[@marcopatriciopugo7962]

@@gear_show a

[@RestoredChannel]

I really enjoy how you pack the new cells in the old compartments. Great build!

[@GrulbGL]

i've read some comments saying about the battery drain capacity, and i'll be honest, not even thinked about that! my recommendation is the SONY VTC6, 25 amps rated.

[@HHK1090]

You’re by far the best and my favourite. Keep up the great work 👍 I’m curious as to what you do with the things you restore? Use them? Sell them?

[@tomgardner4262]

Hello from Australia! I would love to see a mitre saw next if that’s possible? Keep up the great work😁

[@gear_show]

Maybe one day! thank you for let me know 🥰

[@Jonas_Aa]

12:18 the bug is checking out all the new homes.

[@paulthompson8613]

Looked like one of your simplest builds , you made it look so easy ,thanks

[@gear_show]

Yes, thank you! I want to make it easy for everyone.

[@amilcarmoncada1801]

Felicitaciones excelente restauracion de este pack de baterias para este taladro, saludos desde Venezuela.

[@coreysheets4862]

Love all of your videos. Learn so much from watching them. Can you tell us the types or brands of bearing/ gear pullers you use? Especially the internal one.

[@gear_show]

It is from Honda company.

[@BerndFunken]

Wait a second. In the beginning you removed the plastic "tunnels" for the screws, because there was no room for the batteries and after you put all these batteries in the pack you drove screws THROUGH the batteries? You remember that you removed the "tunnels" with the threads for these screws, right?

[@Abbadon2001]

I think if you carefully watch, the pillar removed, was simply that, it wasnt a screw location, more of a support to prevent the case pushing inward in the center? The screws are on the perimeter, not in the center.

[@ChristianRuf91]

20 Cells, i counted 6 times😂 exactly 24 v

[@MeMelon4u]

I'm dumb so could u please explain what that means??

[@zbigniewstuleja3477]

@@MeMelon4u 2:44 he made mistake there are 20 NiMH batteries not 21 so 20*1,2V = 24V, not 25,2V

[@MeMelon4u]

@@zbigniewstuleja3477 ohh that ahh ok

[@faizalam8715]

Now I noticed😎

[@faizalam8715]

You are right

[@barriewright2857]

Did you see the six legged insect, on the concrete block as he's testing the drill on, "WHAT THE HELL IS THAT! " , " MY WORLD IS COMING TO THE END " , nice work that's a inspiration for me to try this myself 👍😎.

[@jesuspincho2201]

Gracias compañero tengo un traladro igual y tambien falla la batería, eres el mejor 👍👍👍👍👍👍

[@x84pav84x]

Как всегда, отличная работа, золотые руки. Лайк.

[@martinpoole1451]

Great fix, be careful not to recharge the new lithium pack on the old charger or = boom, lol

[@lullimuppi]

6:16 The Snake!😂

[@Ghost-fc3kc]

You deserve more than 10M subscriber

[@user-db3do8bt6v]

12:12 ant " Oh shit. The ground's falling apart!!"

[@julianreverse]

Thank you for saving our planet :-)

[@shannondias5424]

Thanks gear show for this video which I told you keep it up

[@CL-wj6wv]

Good work

[@xyz3dwood857]

THANK YOU FOR SHARING your knowledge to everyone. Also in Spain. Is it possible for you to share your favorite AliExprexx provider? In some video, you say that in the comments they put the providers of BMS, power supplies and batteries, but I don't see them. Thank you very much again.

[@pablo963]

I second this petition. In Spain amazon is expensive for these components and AliExpress can be hit and miss. I have just bought from Great IT and Wavgat but I don't know yet about the quality of their components

[@djamelhamdia134]

I think there are only twenty NiMH cells. Anyway, neat and clean job as usual.

[@soupwizard]

Me too, I was counting along and got 20, then I went back and recounted at 50%, yep 20. Not a big deal though.

[@HandsonRestoring]

Great video !

[@JuanPerez-ne4sq]

i think if you can find a bosch mv200 chisel attachment you can use chisels with that awesome machine. I think we would love to see it chiseling

[@sheriffige3904]

it a 2 mode operation,drill and drill with hammer

[@JuanPerez-ne4sq]

@@sheriffige3904 I know because i have two models of the exact hammer drill , read again my comment, I say thath with an special attatchment you can chiselling with that machine

[@svarshyk3030]

My favorite brand is Bosch.

[@sluge1]

Nice work!

[@rolandocorrea1204]

Jajajaaj parerece un electro neumático de la primera Guerra mundial like👍

[@orlatris96]

Mais um excelente trabalho, parabéns.

[@gear_show]

Thank you!

[@yessmoker]

If you wanna measure cell voltage use setting up to 20volts on your multimeter not up to 200 then it shows you 3.6X volts not just 3.6

[@gear_show]

Okay, I got it, thank you so much for sharing :)

[@javaboy8586]

感謝分享， 這是我看過最詳細介紹

[@user-de1jq9tf5n]

Good 👍👍👍

[@boueng]

Good job! Best regards!

[@gear_show]

Many thanks!

[@POOR295NOOB]

Nice work

[@shalashaskasaiz]

Awesome...!💪

[@حسين-ج9ط7ي]

Thanks 🤩😍🤩 عمل رائع شكرا لك اخي

[@redneckgarage17O819]

By now you must have everything to start a construction company

[@Garghamel8]

Small tip, sponge for cleaning soldering iron should be wet.

[@gear_show]

Okay, thank you so much for the tip!

[@kwestionariusz1]

No bugs were harmed during driling tests XD

[@101picofarad]

save bugs - buy new tool!

[@JohnPaul-jg7es]

You can use buffing compound on plastics

[@serhattanrverdi5737]

great work

[@Tobi-fj1uy]

Love this Videos thank you❤️👍 What is a bms exactly? And what does it do?

[@E-hab]

BMS = Battery Management System. Manages the charge and discharge of the batteries.

[@Tobi-fj1uy]

@@E-hab OK Thank you

[@danceswithaardvarks3284]

Nicely and safely done. was that the same piece of wood that you tested the reciprocating saw with?

[@gear_show]

Yes, it it the same piece :D Thank you!

[@danceswithaardvarks3284]

@@gear_show lol ima wood nerd too

[@fayyazbahrami296]

li-ion battery nominal voltage is 3.7 you need 7 cell for the same 21 cell nicad battery and like other said you need high current discharge cell , this dril power is like 400 watt (the corded version was 600w )

[@gear_show]

Okay, thank you so much for sharing! If 7 cells the battery case can load only 7 cells.

[@krlenjuska]

I have 2 same drills and have same problem. 7S is needed but there is no space for 14 cells.

[@elecdroid3666]

Not 1,2 volts. When it is full charged it will be about 1,4 - 1,44 v... 21 x 1,4 = 29,4 v and lion must be 29,4 / 4,2 = 7 cells On the other hand, those cells are icr. How can you use icr batteries for a powerfull drill? You must use INR at least 30 amps max discharge.

[@cadillacescalade1]

Thank you

[@rounaksen1357]

Welldone

[@kylieu4152]

Hehe giỏi quá sư phụ ơi

[@RandomRestore]

Really nice!!! 😊 I start a video maton, with your videos.

[@gayanx86]

Dude, was the battery pack of the drill/screw driver you used to tighten the screws of the bosch battery pack, a home made using a plug base sunken box ?

[@andreipolytov1059]

Это какой то техноужас. Я таких и не видел никогда.

[@syabaDIY]

I like you video bro....

[@user-rl4xj1xd9c]

20*1.5v=30v = 7 pieces li-ion batteries.

[@user-rl4xj1xd9c]

Ni-Cd/MH 1v-1.5v li-ion 3v-4.2v

[@krlenjuska]

@@user-rl4xj1xd9c Exactly. I had same problem because i managed to put only 12 cells inside. Original voltage of this battery is 20-30V - if i use 7S1P liion i get 21-29.4V and this is ideal. 6S2P will give me 18-25.2V but i have double capacity. Simply cant add 14 cells - must find some other way :D

[@lightbatmen]

0:48 Ого, вот это крюк!

[@wolfgangbalu1253]

great job

[@gear_show]

Thank you!

[@arturlend2297]

🇵🇱 👍 👏 👍

[@vedantkaothekar8089]

In one video try to use solder instead of spot welder and let which is better please

[@gear_show]

Okay, I will try it.

[@vedantkaothekar8089]

@@gear_show thank you

[@gear_show]

You're welcome :)

[@АлександрИванов-с7о3г]

Данная модель аккумуляторов не предназначена для электроинструмента и не способна выдать необходимый ток

[@101picofarad]

Ну он же не вставлял большие диаметры - а дюбели сверлить и так сойдет )

[@2515564]

The soldering iron sponge needs to be wet))

[@dejanpetkovski9063]

20 cells

[@gear_show]

Yes, it is. I'm sorry.

[@kret63]

LOL at that battery snake :D

[@toyota218921]

Love the vids

[@gear_show]

Thank you!

[@mas_ter92]

صديقي لدي مثقاب يعمل على 18v اريد التحويل الى ليثيوم ايون هل اضع له خمس خلايا ام 4 هل يمكن ان تحسب لي قيمة البطارية ((4.2 ام 3.7 ) ايهما افضل وشكرا لك ❤❤❤❤

[@sencormagyarorszag-fanclub4871]

Not 20 NiMH cells? 🕵️

[@gear_show]

Yes, it is 20 NiMH cells.

[@sencormagyarorszag-fanclub4871]

@@gear_show Only the man who does nothing does not make a mistake. Your works are awesome

[@gear_show]

@Sencor Magyarország - Fan Club I'm sorry for the mistake. Thank you so much for let me know.

[@Mehmet0147]

Bu kanalı çok sevdim 👍💯💯💯

[@dscdidier190]

That's not correct. 7 cells for 29,4V you need. Oem is 20 Ni-cd cells, by fully charged is around 28-29V. I have put Samsung INR21700-40T cells with BMS on my Makita BHR200 and it's run very fine.

[@gear_show]

Okay, thank you for sharing. It is what I need.

[@status974]

Its awesome dude! Sanx!

[@olivierj.2435]

Why didn't you keep previous charger as it deliver same voltage ? Thanks

[@sypernova6969]

hi! I'm looking forward to rebuilding some of my batteries, and I was wondering if you could share where you buy your bms and your chargers. it seems some available online are good, but some not. it would be good to know the ones you use, as they seem to be good.

[@gear_show]

Okay, BMS item.taobao.com/item.htm?id=581721200004 Battery Charger item.taobao.com/item.htm?id=601840188191 Battery detail.1688.com/offer/591559018923.html

[@sypernova6969]

@@gear_show thanks!

[@sharukhmatekuki5830]

Super🇮🇳👍👍 Kuki

[@khorasanarmy1]

How did he get 25v when each battery is 3.7v and connected in series? He has 12 Li-ion batteries?

[@baronsamdi1600]

Чувак, а почему ты не используешь высокотоковые аккумуляторы!!?

[@101picofarad]

А на кой? Муравьев в бетоне кошмарить и так сойдет.

[@vedantkaothekar8089]

1 comment Awesome sir 😘😘😘

[@gear_show]

Thank you so much 😀

[@Maximaker]

Panasonic 3400mah lithium-ion battery is really a good thing! ! A bit luxurious

[@gear_show]

Yes, thank you so much!

[@cessarr8206]

Hello, where do you buy the batteries and the bms? I want to repair the battery of my drill but I can't find any reliable place where to pair the batteries, the battery of my drill is 12v, could you give me any recommendations when it comes to repairing it? thanks

[@gear_show]

Hello, I bought them from China. You can buy it from anywhere, but you need to check user reviews for make a purchase. What is your drill model.

[@cessarr8206]

@@gear_show my drill is a black decker CD12C Typ 2

[@gear_show]

@@cessarr8206 I used to rebuild this type of battery. I could use 6 cells with this battery case by using BMS 3S20A.

[@cessarr8206]

@@gear_show Thanks for your help, when I rebuild my battery I will tell you how it has been

[@edwardcabreramedina7517]

Que es esa pinsa que utilizas para calentar los cables con el envainado

[@homosapionse]

Why don’t you use the original battery charger ? Isn’t the bms supposed to do the charging process ?

[@homosapionse]

Great video btw ;)

[@maesivo5621]

The red cap for loading the battery, can i buy it somewhere online?

[@babaorhums1]

Magnifique

[@plageran]

The way you calculated how many batteries you need is confusing the crap out of me.

[@gear_show]

Yes, I'm sorry about that.

[@nikstoun]

The Real Voltage when original battery charged to 100% is close to 30V ..you calculate wrong . Machine work like this voltage is almost 60% from its real power .

[@tduic]

Hi there. I have one question: the batteries you're using have maximum discharge rate of 6.7A. You arranged them in 2P configuration, so they can withstand 13.4A. Yet you've put a BMS that can handle 30A. How does that work in practice then? If the current draw from tool is more than 13.4A, won't batteries be damaged, burned?

[@gear_show]

I think the BMS will handle about this problem.

[@boueng]

Li-ion charger and DC female power jack from AliExpress?

[@gear_show]

Yes, you are right.

[@andrikos21]

What kind of pcb did you use ,6s or 7s and how many amps ?

[@troyna77]

Have you ever revived nicad batteries? I've seen people use a 6volt or 12volt battery charger to shock a used nicad battery that's not holding a charge. I think they called what happened to the nicad battery was "treeing"? Anyway was wondering if you had revived any sub c size nicad and if so how long did they last(estimated charging cycles)???

[@gear_show]

Yes, I did it. I revived them with a cycle charging. Some batteries have been saved, some are completely dead.

[@hieuha4334]

How much is the price of lithium batteries, pro ?

[@lonesonestarcattlecompanyj408]

can you build and sell these? there are a lot of bosch 24v for sale and dead batteries. let’s save from the trash bin!

[@sarmat754]

Молодец

[@paulofloresjunior]

Hi, I found that Panasonic NCR18650B 3400mAh can delivery only 4.9 ampere at time, so the max power your pack can delivery is 4.9Ax2(parallel)= 9.8A x 25.2V (total voltage) = 246.96W, right? Can you measure this? I think the only way is making a 24mm role in a concrete material and use a multimeter.

[@gear_show]

Oh, yes you are right, thank you for sharing!

[@E-hab]

Good info 👍🏼

[@paulofloresjunior]

@@gear_show why when you measure fully charged pack you get only 23.1V instead 25.2V?

[@BradyBegeman]

I wonder, is there any risk to the internals of the hammer drill since this battery can deliver much more current than the NiMH batteries?

[@xfiles4484]

The drill will only draw what it needs. Like a computer power supply, if you have a 1000w power supply, and the PC only draws 150w, it just doesnt use it to the max capability.

[@BradyBegeman]

xfiles4484 You’re absolutely right of course. You’d think having an engineering background I would remember “current follows voltage”.

[@bquedenfeld]

need your help I have a 24 v nicad DeWalt battery I would like to convert to a 24 v Li ion battery and charger What and how many batteries would I need? What type of BMS and charger? I would like to use to put the battery in charger you have 6 cells x 4.2 =25.2 but you used 12 cells I don't understand this

[@gear_show]

I used 12 cells, because I want large ampere. I connected 2 cells in parallel. Parallel increases ampere same voltage, while series increases Voltage same ampere. You need to understand "series" and "parallel".

[@bquedenfeld]

@@gear_show ok thanks now i know that how does one then choose batteries and a BMS

[@jesuspincho2201]

Se le podria poner para que trabajase con corriente

[@DatBlueHusky]

tools now days are half that size and are way more powerful, so building that battery did improve it but still not worth it really