MaximalPower Rechargeable Li-ion Replacement Battery for Nikon EN-EL20/ENEL20, Nikon Coolpix 1 J1, J2, J3, AW1, S1, Coolpix A DSLR Blackmagic Cameras 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 Rechargeable replacement battery for Nikon EN-EL20 / ENEL20 and works with Nikon Coolpix 1 J1, J2, J3, AW1, S1, Coolpix A DSLR Camera Also works with Blackmagic design pocket cinema digital camera Chemistry: Li-ion, Output Volts: 7.4V, Capacity: 1250mAh 100% Compatible with original manufacturer equipments and chargers, absolutely no memory effect and can be charged at anytime 3 years limited warranty