Original Brand: Navman Chemistry: Lithium Ion Voltage: 3.7V Nominal Capacity: 850mAh Replacement battery compatible with Navman F20, F30, F40 Replaces Navman battery BT000021C Dimensions: W: 30mm H: 5.5mm L: 50.5mm This battery is a fully compatible alternative to the original branded product
Product Code: GPSB-BT000021C