Build 48V 18000mAh Battery for Brushless Weed Eater
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- Опубліковано 6 лют 2025
- This project is related to my previous video • DIY Li-ion 20C 48V 10A...
In order to be effective, I decided to make a new battery with large capacity.
The new battery pack is 48V 18Ah 864Wh that drain current up to 12A that can run 570W battery power tools.
Lithium-ion battery cell
Brand model: LG INR18650HG2
Standard capacity: 2800- 3000mAh
Rated voltage: 3.6V
Charging voltage: 4.2±0.05V
Maximum continuous discharge current: 20A
Discharge cut-off voltage: 2.5V
Weight: Max.47.0g
Size: Max.18.2×65.2 mm
Charge and discharge times: 500 times
I hope you find this video useful and enjoy it!
Furthermore, I am happy to receive feedback, suggestions to improve myself.
Thank you very much for your likes, comments, and subscription!
Have a nice day
Gear Show
Great job.
I like that you included that the "pro" guy liked the gas better.... Which does not take anything away from your project.... That actually looked like a bigger gas motor and cutting blade.... He probably likes it because it's faster.... But who knows.....
That could be an interesting project.... Get a bigger gas one, and electrify it....
I got a Makita electric leaf blower a few months ago....... For what I do, I really like it. Blow out my garage, blow out my front sidewalk entry-way area... Works really good, and I don't have to mess around with gas & oil like my gas one.... I have the batteries, because I have a bunch of Makita tools.... I like it.
Thank you, I'm so glad that you like my work.
Nice beat during battery attached in holder
If you've got the right tools it looks a great build it yourself kit
Yes, thank you!
The bms connections already has metal pads soldered on it so you can spot weld the nickel tabs directly on the board, otherwise, nice build! 😊
Recently, I have had to refurbish a battery pack and the BMS had the same pads and it was a pain to remove the welded nickel from them, so I have de-soldered these small pads from the PCB and soldered the new nickel strips directly. In the future when the batteries will die, I can still re-solder the BMS easily.
@@robotics_and_stuff same here. I just desolder it rather than ripping the tabs. For new ones, if I don't plan to weld onto the bms pads, I desolder them and keep them for another project, and then solder the nickel tabs to the pcb.
@@quandiy5164 Thank you so much for the tips.
@@robotics_and_stuff Yes, I'm thinking about this too :)
Great suggestion i like it
My hero, you are such an inspiration, greetings from The Mediterranean
Thank you so much! I'm so glad about your greetings.
Nice build. But everything comes in ready to assemble, it's looks quite easy to build. I like the enclosure.
Very good BMS...
This would be a nice power bank
What is the point of that seal if there are openings for dirt and moisture to get around the handle?
Love it! This was a very practical build that lets you go all day without swapping batteries all the time.
Also, your custom stickers look very clean and professional.
Thank you very much!
give daigrame and discrib then all the best
I want batry conctor sheet and bord send deatails
This reminds me of the old Black & Decker Thundervolt system.
Great job, thank you brother. You are so talented
Thank you so much!
My man taking it straight to mud.
Fine very good 😊
Brilliant upgrade
Lovely build man!
Я систему выдува сделал из 120 вентилятора,двух паралельно собраных 18650,повышающего модуля mt3608 и tp4057 на 3 ампера,выдувает тихо и накрутить можно тягу выдува больше).Интересно посмотреть как каждый мастер подходит к своему делу.
This would work in my "Battery Backpack" idea.😀
Great work with great skills ❤
Nice battery kit
good job. This video is some sort of Li-Ion ASMR.
Yes, I'm glad you like it.
LG hg2 cells. Awesome power.
Portable electrically driven trimmer is quite convenient thing.
Yes, it is.
This the best video have ever seen
Thank you!
nice build
i wish I had that battery pack 😩😩
Can you post the link were can we buy the box with the BMS. thanks a lot
I really need one off those
Nice work 👍 looked like a fun project.
Yes, I like this kink of project.
Already liked cuz I know it's going to be good👌
Thank you!
watching from the Philippines ❤️
Excellent work 👍👍👍 . Thanks for sharing
You should add straps, back padding and a solar charger to the rig.
Yes, thank you!
very nice i will search for a 21700 kit, i liked the idea!
The build was too satisfying 😃love it😘😘
Very good 🤝
Good job bro
My Neighbour is also a ''weed eater''
Or smoker
very nice workmanship and you took a nice shot People understand everything in detail.thanks😇
“Try the battery.”
Dan DeQuille, “The Big Bonanza.”
I hope to build my own battery in the future, so I can try it myself!
Excellent work ❤️
Love from India ❤️🔥
Very good I very liked thank sir God bless you ❤
So nice of you
You need bigger tip on that soldering iron for better heat transfer and easier soldering.
Thanks for the tip!
you know you suppose to weld the tabs on the pcb too, thats why theres a metal square tab already soldered on there lol
Yes, thank you for the tips. I think soldering is more reliable.
Congratulations good job,I try to do the same whit no results, what's the secret to match the battery whit all electric tools?
Универсальное решение на каждый день, на данный широкий спектр инструмента, лайк👍
SUDAREA PRIN PUNCTE!😉😄
🙏 Thanks 🙏👍
Interesante y donde se puede conseguir batería litio para estos proyectos,👍✅
Very nice job
Thank you! Cheers!
На плате уже припаяны площадки к которым можно было точечной сваркой приварить))) К ним не надо паяться было. А если паяться, то их лучше было бы удалить.
Конечно, точечной лучше и безопасно.
5:19 Your soldering iron doesn’t store enough heat to melt the blobs into a single pool. You can consider something stronger like gun type irons with large transformers in them. 15 seconds from cold to hot, it would be a single pool.
And needs a little more flux
Tolle Idee
Amazing brother amazing nice video
Cool project. Though when soldering the ground and positive terminals for the BMS, don't use the fan, as the cooling of the tin, soldering iron, and BMS board makes the soldered connection weaker than normal. You want to get the tin looking nice and smooth.
This, I felt like every single solder connection looked cold.
Your video editing make it fun to watch 👍
Really long life battery 😉
at 18000mayh, I think it's time you use Ah instead, then it's 18 and it makes a lot more cents. That's why we don't say I spent 1,000,000,000 cents on a used car. Small numbers are easier. It's kind of like building a spot welder that needs a separate button instead of using a momentary in the welding head so you don't have to synchronise your hand holding the spot welder with the button in your other hand. That wouldn't be very efficient!
Now to make one of these for my smartphone...
Комментарий в поддержку канала и ролика, а также труда мастера.
Поддерживаю!
Interesante pack de baterías y tiene alguna forma para preguntar como se llama ese sitio donde las venden en internet 🤔✅
Please , how to change nailer gun cord to cordlesss
Good video very well
Where do you buy this welding machine and wahat is the name ?
Все красиво и замечательно, но есть на мой взгляд опасность получить поражение током при использовании данного девайса. Торчащие контакты вилки находящиеся под постоянным током не безопасно. Логично со стороны источника тока ставить розетку в подобном исполнении. На порядок безопаснее. А вилку присоединить к газонокосилке. А в общем автор молодец.
Хорошая идея, спасибо, что поделились!
You are a really genius 🤠 sir 👏👏
Very good
Thanks
Why solder you can use your spot welder for the balancing tabs the main +- maybe you need to solder it because of high current will passtru it
Good job boy 👍
Hi thank you for sharing your skills if that is possible show us how to repair servo motors
You're welcome! I will try my best.
Great video!
What a clean work, amazing like always. You probably have a great knowledge about electronic too. One suggestion though, The BMS terminals have small metal sheet on them, the propose of them is that you can also spot weld the battery nickles to the BMS rather than soldering it(Maybe you are aware of it and and prefer soldering, anyway i just wanted to mention it:))
Yes, you are right. I think soldering is more reliable. Anyway thank you!
@@gear_show can you please share the link where can we get the box, bms, Nikel stripe, etc.. the entire kit to make DIY
@@kmuralikrishna1582 wtf he has like 20k machineries even I can do more clean work then him if I have those machineries
No es un ventilador es un extractor, para no contaminantes de la soldadura
@@g4gamerby427 It's Illutsion. You just think you can do it, but in reality you can not. 20K machinery??? Nope his machineries are in total under 1000 usd. Maybe he has more expensive devices, but the devices he is using in these videos are not that special. It's all about himself and his art, not his tools.
If you are going to solder the nickel strip to the BMS, instead of spot welding them like Quan Diy proposed, do it in reverse order. First solder the strips, then spot weld the batteries. If you do it the way you do it currently, the temperature from the soldering will transfer to the nickel strip and onto the nearest cells, this way you are exposing them to temperature stress, which might lead to explosive results down the line. Lithium* cells are no joke, and people should treat them as volatile explosive material at all times.
what about the current going from the spotwelder to the BMS?
@@vbp6159 good point, although it's not a closed loop, and it shouldn't damage anything. If you wanna be completely safe, spot weld all the nickel strips then solder the strip for the BMS while using some thermal relief in the path to the batteries. Could be big piece of copper, temporarily attached to the strips to act as a heatsink, or if you are paranoid enough, you could mill a water-cooled heatsink - over-engineered is always better than under-engineered. Again, though, having in mind you are spot-welding to a single point on the pcb, without closing any loops, you should be safe. Most BMSes come with those strips pre-soldered, just so you don't solder the ends and expose the batteries to thermal shock. If you wanna be absolutely safe, design the BMS yourself, and leave the pads disconnected, spot-weld, then use a jumper - similar to the way some PSUs are designed - with big traces and added extra wires beneath big blobs of solder.
@@IlfStoyanov thx for the info man :-)
Hi, could you please provide a list of every material you used, like spottwelder and so on. I want to make a similar project. URLs too, would be very cool. Or is it all DIY?
It could be that it would be cheaper, easier and faster to make a 48V battery from 16 pcs of 20Ah C40 cells, with the screws on the ends ready. In addition, Ah would be 20 instead of 18. Another advantage of such a battery is that the cells can be easily removed for another use if necessary, when they are not welded in a plastic frame. In addition, the power supply capacity can be of a completely different class.
I suggest a 5A fuse, drawing more than 5A will cause fire on your pack because all your pack + and - stands only to a single nickel plate strip, consider adding more nickel strips (stacked) on your +/- ends.
Great idea, thank you for sharing!
Thats nice! Can you make a video to double a ebike battery with an extra battery?
Can you show how to make a high output 12v battery car jump starter? Thanks
Great work
cant they make the cells sqaur shap ??
Wouldn't this battery need some cooling?
umm you just solderd a conector to the battery that is ment for 230v see any problems there?
I have a 48 volt electric bike and motor cap. Is 250 watt.should I use your this type battery if so kindly tell the cost and also inform me wherefrom I may get it.
Nice build. You should get into designing and 3D printing your own DC tools. Fusion 360 is free for hobbyists. SLA printers can print accurately to 22 micron now (Phrozen 8K Mini) and the Elegoo ABS resin is very rough. I designed and printed a larger head for my DC string trimmer and it holds up well to the punishment.
Okay, I do appreciate with your sharing.
@@gear_show how can I order one
@@kirkaustin8469 B&Q and waiting for a reply are us sells them 🤣
@@officialmysteriousrider130 how can I get one from you
Im confused about 1 thing. Isn't 6 cells in series 45 volts?
How does a person know what size BMS a person needs for a battery?
you're brave to touch the parts with your bare hands.. 😄
Its safe to touch 48V pack!
Sorria você está sendo filmado ❤ :) :(
Where can i buy ome of those wonderfull kits
You can spot-weld also on the board
okay, thank you!
Givin me an idea about electric lawn mower
Wait lithium battery don't have polarity, if there is, why does - and + are tap on one line?
You can also see that there's -p and +p but how is that work when one line has + and - on it
I don't understand
What is the cost of this project?
BMs specification ?? Any link to buy/purchase online??
hi i like the video, where can buy all the materials needed?thank you
3:00 what are u doing??? These spot on plate for welding!!!
Nice build but why don't you share the links of material which you used(especially BMS)?
Can u give me the name of the box for the battery or the link in English plz thanks
Круто!!! Спасибо за видео!!!
Thank you!
Wow. I had the honor of turning 999 likes into 1000. Yay!
Oh really, thank you so much :D
This battery suitable for small area size or home used but its great!
Thank you!