A: Our battery supports up to 4 identical batteries in series/parallel connection.

1. For 12.8V series battery we recommend up to 4R4P.
2. For 25.6V series battery we recommend up to 2R4P.
3. For 51.2V series battery, we recommend up to 4P.

Note:
The battery can be connected in series and parallel under the following conditions:
1. Same Model (BMS, Same Model, Voltage)
2. Same brand
3. Purchase date is within half a year

A: For normal battery:
Discharging temperature is between -20℃ to 60℃.
Charging temperature is between 0℃ to 50℃.
Storage temperature is between -10℃ to 50℃.

For self-heating battery:
Discharging temperature is between -20℃ to 60℃.
Charging temperature is between -20℃ to 50℃.
Storage temperature is between -10℃ to 50℃ ℃.

A: It depends on the built-in BMS. e.g. if a battery is equipped with a 100A BMS, the maximum continuous charge/discharge current is 100A.

A: You can mount your LiFePO4 battery in any direction except upside down.

A: We do not recommend our batteries for starter batteries. However, please contact our customer service if necessary.

A: You can contact our customer service or you can use tracking to track your package.

A: Please feel free to contact us via service.de@ipowerqueen.com. Wir will provide customer service for you within 24 hours (business days).

Learn more about Return and Refund.

A: If you need to cancel an order, please contact our customer service: service.de@ipowerqueen.com.

If the order has not been shipped, the refund will be arranged within 24 hours (business days).

A: Power Queen has stocks in Europe and the delivery time is 2-7 working days.

A: When buying battery without VAT. the shipping and billing address must be within Germany.

However, if you are a corporate buyer, please contact our customer service.