Maximal Power DB SON NP-BN1 Replacement Lithium-Ion batttery 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 Made with info-chip, which can show remaining time on the original equipment, and charged by original battery charger 100% Compatible with original manufacturer equipments and chargers Maximal Power is one of top selling brands for replacement batteries at amazon Backed with 3 year warranty and $1 million product liability coverage Integrated microchip prevents overcharging & lengthens battery life