Specification:Voltage: 7.4 V; Type: Li-ion; Capacity: 2200mAh / 16.28 Wh; Size: 74.40 x 47.80 x 24.21mm
Quality certification: ROSH, CE, UL triple certification, no memory effect, overcharge, over discharge, overheating, over current, short circuit protection
If the battery life of your wireless device is significantly reduced, you should replace the battery