This is the text of the instructions for the 24V, 10Ah pack from Ping, might be some help:
User Guide - 24V10Ah
Specification of Battery Pack and BMS
1 Rated Voltage: 24 Volts
2 Capacity: 10 Amp Hours
3 Weight: 2.3 kg
4 Dimension: 150x110x95 mm
5 Suggested Load: 250 Watt
6 Max Load: 350 Watt
Specification of BMS (Battery Management System)
1 Charging Voltage: 31 Volts (Max)
2 Charging Current: 5 Amps (Max)
3 Rated Discharging Current: 10 Amps
4 Max Continuous Discharging Current: 20 Amps
5 Cut-off Current (Max Current): 25 Amps
Specification of Charger
1 Input Voltage: AC100Volts-220Volts
2 Output Voltage: DC31Volts (±2%)
3 Output Current: 2Amps (±3%)
4 Polarity of the Connector (face to the connector):
1. Positive
2. Null
3. Negative
Caution: Please make sure the polarity of the charger connector is corresponding to your battery box or battery pack, positive to charging positive, negative to charging negative. Any mistakes might destroy the battery pack.
Wiring of Battery Output
1 RED Wire (Marked): Positive (Charging/Discharging)
2 GREEN Wire (Marked, thinner than the other two): Negative (Charging)
3 BLACK Wire (Marked): Negative (Discharging)
4 RED + thin GREEN: Charging
5 RED + BLACK: Discharging (Power Output)
Caution: Please be very careful when connecting these wires to your battery box or electric vehicle. If you don’t understand how to connect, please send mail to
pingping227@hotmail.com. Any mistakes in this progress might destroy the battery pack.
Tips
1 First charging costs more than 10 hours. Red light turns to green, then turns to red again after a while, again and again. It’s normal. The charger is balancing the capacity of battery cells.
2 The battery pack’s capacity will be activated to its real capacity (10 Amp Hours) after 3 to 5 times cycle. Before being activated, it seems to have 8 to 9 Amp Hours capacity.
Thanks for using our batteries.