Maximal Power DB NIK EN-EL23 Digital 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 equipment Absolutely no memory effect so that you can charge battery at anytime USA Based brand with Warranty and Customer Service Shipped and sold by amazon.com only, All other 3rd party sellers following this listing are selling counterfeit products