High Quality, high capacity, light weight rechargeable Battery. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection, with built-in battery life microchip. CE Certified. Dimension: 50.52 x 36.55 x 5.56mm Compatible with: Magellan Maestro 3140. Compatible with Original Battery Part no.: 37-0030-001 12 months Manufacturer warranty. Note: Tools not included.