Step 1 : Disconnect cell series cables and plug on the tester board (support 2.0mm & 2.54mm pin space)
If one LED does not light up, it means this series of battery cells has developed a problem which need to be replaced. If all LED light up, it means the BMS has developed a problem.
Step 2: Disconnect this battery series and using the battery holder to simulate the cell series to be replaced.
Use the tester board to check of LED lights up Use the battery charger to check it the battery take charge
Step 3: Weld the new battery cell
reviews
I originally bought my chair to use on holiday because of its design etc it could be easily taken in aircraft etc. Tenerife is very hilly in generally so I also bought a spare set of batteries. Everything worked brilliantly. I have also travelled...
Source | Mr. B Shugrue
Fantastic service. very helpful in selecting what was best for me. highly recommend.
Source | Mr. S Birch
Excellent service, really quick replies giving accurate information and no hard sell