【Spare Battery Specs】 Capacity: 1000mAh. Voltage: 3.7V. Type: Li-ion rechargeable battery. Compatible with 160240 battery replacement . Limited charge voltage: 4.2V. 【Compatible Models】:This battery for steelseries 61298RX, arctis pro wireless, H wireless gaming-headset, siberia 800, siberia 840 wireless gaming headsets. Incompatible with Arctis Nova Pro wireless headset. 【For Best Performance】Please use original charger and cable to charge this battery. Using up all the power of battery for the first three times before charging, and then take a full charge, thus the battery can be reached the optimum effect of using. The battery replacement for steelseries gaming headset could be charged on your arctis pro wireless headset or other headset models. Or it could be take away from the headset to be charged separately.