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Segway General Discussion General discussion related to any model of Segways, miniPROs, or Ninebots. Please do not post non-Segway technology posts here; use the technology forum instead.

Old 08-26-2018, 11:40 AM   #1
mimerson
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Default ninebot elite battery issue! can anyone help?

Been getting this error message
Output of battery 2 error - protection against overcharging disconnecting and short circuiting

I presume i need a new battery, the issue is I am finding these very hard to get in the UK. think i might have to open up the battery and replace some cells - has anyone done this - can anyone offer any help or advice?
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Old 10-16-2018, 09:34 PM   #2
Ninebot-PTR-Elite+
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Had been searching for modestly priced rebuilt packs in the US with no success. Finally ended up doing a pack rebuild on my own. Found the exact OEM 18650 LG Cells out of Korea for $230USD for the 60 cells. Pure nickel stripping and cell holders cost another $30, but was able to reuse the original 15S2P BMS's which both reset nicely. I already had the spot welder. The "new" LG cells were from a 2016 mfg batch and equally charged at 3.7Volt give or take .04

I have been running the pack for six weeks now. Working like a new pack - of course it almost is new!

Just here to say that rebuilding a Ninebot battery pack can be done by "carefully" following guidance found online and Youtube. Learn from other people's mistakes and successes.

I did have someone standing by with fire extinguisher and I wore gloves, eye protection and full face shield while working with the packs. Spot welding batteries can go smoothly and easy until IT DOES NOT! I had no problems , but took my time and checked and double checked polarity, wiring positions, placement BEFORE every weld.

I will rebuild all my packs from now on, but will try to maintain the same "sense of danger " as I did doing the first pack.
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