Features: Applicable Voltages: 60V, Applicable power: less than 1000W, maximums . working current: 30amp . Charges-discharge for Protections, over-discharge for Protections, temperature control for Protections, short circuits for Protections, . With a balanced charging function to balance the battery, make the battery pack have better consistency. Can be used for ternaries batteries, acid batteries and - acid batteries. Suitable for electric bicycles, Scooters, electric mopeds, frequency converters. Specifications: Material: plastic+metal Size: approx 6.5x5cm/2.6x2in Applicable Voltages: 40V Applicable power: less than 1000W maximums . working current: 30amp Continuous maximums current: 20A Overdischarge for Protections Voltages: 2.6V Overcharge for Protections Voltages: 4.25V Charging current: maximums . 20A temperature discharge: 75 ℃ Low temperature Charges: -7 ℃ Package Includes: 1xBattery Protections Board note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.