fjodorlogin
1 mW
- Joined
- Aug 13, 2021
- Messages
- 16
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 from production.
https://m.aliexpress.com/item/4000102603320.html?spm=a2g0n.order_detail.0.0.4ff7f19crviuHv
This battery measured 13,1v through the BMS and 19,5v when removed. 7 of the parallel groups were at 0v.
The second scooter ran for a few months (roughly 20-30 cycles) until it also broke down. It was never charged above 80% or ran below 20% charge.
I am suspecting the tiny mysterious BMS could possibly be lacking a balancing feature which perhaps could explain the short/lack of lifespan.
I am waiting for my opus bt-c3100 to arrive so that I also can test the capacity of the individual cells.
Could I be right in my suspicions? Any other thoughts?
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 from production.
https://m.aliexpress.com/item/4000102603320.html?spm=a2g0n.order_detail.0.0.4ff7f19crviuHv
This battery measured 13,1v through the BMS and 19,5v when removed. 7 of the parallel groups were at 0v.
The second scooter ran for a few months (roughly 20-30 cycles) until it also broke down. It was never charged above 80% or ran below 20% charge.
I am suspecting the tiny mysterious BMS could possibly be lacking a balancing feature which perhaps could explain the short/lack of lifespan.
I am waiting for my opus bt-c3100 to arrive so that I also can test the capacity of the individual cells.
Could I be right in my suspicions? Any other thoughts?