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    13s10p battery pack repair(noob experiment). Help appreciated!

    Again, thank you all for your help :D :thumb: If you are still interested to follow this project, check out PART 2: https://endless-sphere.com/forums/viewtopic.php?f=14&t=116511
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    13s10p battery pack repair (PART 2). Help much appreciated!

    I have two 13s10p battery packs, First one had 7 parallel groups that measured 0v, the remaining three were at 3,9v. I have removed these 30 cells (individually). The second one measured as follow: 0.0v, 0.0v, 0.0v, 3.5v, 1.7v, 2.9v, 3.7v, 2.6v, 3.5v, 0.6v Therefore my plan is to...
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    Help needed for a 72v, 3000w - 20s, 12 row Battery Build

    DIY Lithium Batteries: How to Build Your Own Battery Packs By Micah Till Maybe this could be of help?
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    Sunkko 737g power and pen modification (220v)

    My plan is to combine these tutorials: 1. Performance boost modification https://m.youtube.com/watch?v=YpuEL2_Wvz8&t=423s 2. Welding pen modification https://www.youtube.com/watch?v=pSOmJVss76s&t=264s Parts I would need: - Shrink tube 6mm - 25 square mm wiring - Welding tips In other...
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    Help to choose the right BMS for my escooter repair

    I took apart my old BMS which had four of these transistors https://www.lcsc.com/product-detail/New-Arrivals_CRMICRO-CRSS052N08N_C410924.html Unfortunately I could not find any answers to whether these transistors could reveal the size of my old BMS. Most of the controllers I find online...
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    Help to choose the right BMS for my escooter repair

    Thank you for clarifying! My controller unfortunately lacks any identifiable text. The guy from the thread you posted got this answer: ""I'm still trying to understand battery packs and I was wondering what is the Amp for a 10S4P battery pack built with Panasonic NCR18650PF 2900mAh...
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    Help to choose the right BMS for my escooter repair

    Moderators, Please delete this post since I am unable to do so(?) I did not know crossposting in this forum is banned (I am a new user) Maybe also put the "general guidelines" a bit more visible for folks like me! =) larsb, I am completely calm and have not needed to use any CAPS so far...
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    Help to choose the right BMS for my escooter repair

    Most of the time, also IRL, it's not always nessesary to call the authorities. Just FYI
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    Help to choose the right BMS for my escooter repair

    Ok Karen, I can remove it myself if it's not okay to Crosspost for more visibility
  10. F

    Help to choose the right BMS for my escooter repair

    https://endless-sphere.com/forums/viewtopic.php?f=14&t=116436
  11. F

    Help to choose the right BMS for my escooter repair

    48v 25ah 13s10p 500w People have recommended the Daly BMS in my previous post (links to BMS and previous post👇) How should I go about finding out how many amps I need...
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    13s10p battery pack repair(noob experiment). Help appreciated!

    Wow you guys are awesome! :bigthumb: Thank you for now, I will make a new post shortly when I have tested the inividual parallel groups of the second battery.
  13. F

    13s10p battery pack repair(noob experiment). Help appreciated!

    Two more details that might be worth mentioning, 1. I have not been able to find any spec sheet on these cells so all I "know" is that they are 2500mah, 3,7v. (This was the reason I ordered the opus) 2. I have a spot welder
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    13s10p battery pack repair(noob experiment). Help appreciated!

    Yea I am almost positive that I still have enough p-groups, otherwise my plan was to reduce capacity by making smaller p groups. Thank you for your advice!! I cancelled the opus order for now.
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    13s10p battery pack repair(noob experiment). Help appreciated!

    https://endless-sphere.com/forums/viewtopic.php?f=35&t=116291
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    13s10p battery pack repair(noob experiment). Help appreciated!

    Hello! Very thankful for advice! I am trying to make one functioning battery from my two broken scooters while trying to learn some DIY battery making in the process. The battery specs are: 48v 25ah 13s10p The first scooter arrived broken and the seller (AliExpress) quickly took it away...
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