My scooter battery BMS got water damage and I want to replace it with a basic one.
I am trying to source an inexpensive BMS to replace the existing damaged one. I have included a picture of the pack. Based on the picture and the output specs of 36V 15AH it appears that the arrangement of the cells are 10s p3. Please see the schematic I included for the INR 21700/5OE cells. https://batteryservice.bg/wp-content/uploads/2018/12/INR21700-50E.pdf. Based on this Spec sheet for the cell the Max discharge current for the cells is 9.8 A.
The Kit I have is the EZEE by Grin:
I am trying to source an inexpensive BMS to replace the existing damaged one. I have included a picture of the pack. Based on the picture and the output specs of 36V 15AH it appears that the arrangement of the cells are 10s p3. Please see the schematic I included for the INR 21700/5OE cells. https://batteryservice.bg/wp-content/uploads/2018/12/INR21700-50E.pdf. Based on this Spec sheet for the cell the Max discharge current for the cells is 9.8 A.
- Does this mean that each P3 set can put out 9.8A x 3= 29.4A?
- Do I need a 30A BMS?
- Or do I need to get a BMS that matches the controller's MAX amps?
- Do I need a 10s BMS or a 10s P3 BMS?
- A friend suggested that if the 3P is in the end, then I must use a relay controlled BMS. I am not sure if that applies here. Please confirm if I have a P3 10s or 10s p3 or if it makes any difference.
The Kit I have is the EZEE by Grin:
- 500 watt internally geared eZee brushless hub motor
- A 25 amp (IRFB4110 mosfet) motor controller.