Features: Applicable voltage: 60V, Applicable power: less than 1000W, Max. working current: 50A. Charge-discharge for protection, over-discharge for protection, temperature control for protection, short circuit for protection, etc. With a balanced charging function to balance the battery, make the battery pack has better consistency. Can be used for ternary batteries, manganese acid batteries and cobalt- acid batteries. Suitable for electric bicycles, scooter, electric mopeds, frequency converters, etc. Specifications: Material: plastic+metal Size: approx 8.9x5cm/3.5x2in Applicable voltage: 48V Applicable power: 1000W Max. working current: 50A Continuous maximum current: 30A Overdischarge for protection voltage: 2.6V Overcharge for protection voltage: 4.25V Charging current: max. 30A High temperature discharge: 75 Low temperature charge: -7 Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Battery for Protection Board