Maximal Power GoPro AHDBT301 Video Camera Battery (Black) Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our MaximalPower Warranty 100% Compatible with original manufacturer equipments. Capacity: 3.7V, 1200mAh (Will NOT affect battery compatibility) Absolutely no memory effect so that you can charge battery at anytime. Amazon is the only legal distributor for Maximalpower, all other 3rd party sellers are not authorized and will be counterfeit product 3 year warranty