For Kindle Fire HD 7" X43Z60, 26S1001, 26S1001-1A, 58-000035, DR-A014, DR-A015 * 3.7V 4000mAh 14.8Wh Lithium-ion Battery * No memory effect: Battery can be charged or discharged as needed without loss of capacity. * Overcharge protection, with built-in battery life microchip. * 1 year warranty