Does your mobile phone run out of battery when you need it the most? The Avacom for Apple iPhone 6s, Li-Ion 3.82V 2200mAh (replacement for 616-00036) can be used as a spare battery. It is designed for Apple mobile phones, more specifically the iPhone 6s models. The Lithium-ion (Li-ion) battery features a capacity of 2200mAh, which allows extended operation time. To ensure a long battery life, please follow the instruction manual on proper battery usage.