today work --> recovering citycoco 60V dead battery

batteryGOLD

100 W
Joined
Dec 14, 2019
Messages
293
Location
PT Portugal
*reuse/recycle*

today recovering citycoco dead battery..

Problem: No charge, no work no nothing..
Case study: too many time no charge.. and some use/age. battery from 2018 with EVE 1st generation cells.

technical problem: one dead short circuit block from 16S, and two other blocks low capacity, plus BMS ko
This means 3 blocks are compromising battery performance.

Solution: replacing 5P dead block with some reused EVE cells from trotinetes& adjust those two weak blocks at this 16S setup.

Action: I classified this 3 blocks by week level. one block 0V death CC, other low capacity loss, and other block medium capacity loss.
dead 5Pblock --> replaced all cells.
less weak block --> I replaced 2 cells from 5P block with reused EVE cells
most weak block--> I replaced 4 cell of 5P block.

I took this picture from discharge test (1st time 8S and other time rest 8S at 16S battery). 10A 300W regenerative discharge to other battery blocks. Can't waste energy!
Check it here:
https://ibb.co/r2gbbry

The icharger is doing 300W continuous perfectly from one battery to other. no heat, how is possible such a very high efficiency device? icharger designer engineer is at top!
 
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