12V 250AH Lithium Lifepo4 Battery Deep Cycle Built In 200A BMS

Items

Test Method and Condition

Criteria

Thermal exposure test

Each fully charged cell, stabilized at room temperature, is placed in a circulating air-convection oven. The oven temperature is raised at a rate of 5 °C/min ± 2 °C/min to a temperature of 130 °C ± 2 °C. The cell remains at this temperature for 10 min before the test is discontinued.

No fire, No explosion

Low pressure

Each fully charged cell is placed in a vacuum chamber, in an ambient temperature of 20~25℃. Once the chamber has been sealed, its internal pressure is gradually reduced to a pressure equal to or less than 11.6 kPa (this simulates an altitude of 15240 m) held at that value for 6 h.

No leakage, No fire, No explosion

Short test

The fully charged battery is to be short-circuited by connecting the positive and negative terminals of the battery with resistance load not exceed 100mΩ. Tests are to be conducted at room temperature 20~25℃.

No fire, No explosion

The Temperature of the Battery surface not exceeded than 150℃

Over Discharg

(After standard charge. Cells are discharged at constant Current of 0.2C to 2.0V, and the positive and negative terminal is connected by a 30Ω wire for 24 hours. Cell Condition: Fresh, Fully charged cell.)

No fire, No explosion

Over charge test

After standard charge, continue to charge with a constant voltage 4.8V per a cell, holding 8h.

No leakage, No fire, No explosion

Soak Test

Put the batteries into clean water, be soaked for 24 hours.

No break, No fire