Battery type: Li-Ion - no memory-effect Capacity: 900 mAh Voltage: 3.7 V Energy: 3.33 Wh Number of cells: 1 Dimensions (L x W x H): 4.5 x 3.6 x 0.6 cm Weight: 19 g Compatible with the following device models: TomTom Via 135 TomTom Via 1435T TomTom Via 1405T TomTom Via 1405M TomTom Via 135M TomTom Via 1405 TomTom Via 1505M TomTom Via 1505 TomTom Via 1435TM To ensure compatibility, please check to see whether the battery you are currently using is listed below.