Synergy Digital GPS Battery, Compatible with TomTom 4ET03 GPS, (Li-ion, 3.7V, 1100mAh) Ultra High Capacity, Replacement for TomTom 6027A0106801 Battery
Specifications:
Battery Chemistry: Li-ion
Voltage: 3.7V
Capacity: 1100mAh
Compatible with: TomTom 6027A0106801 Battery
Works for: TomTom 4ET03 GPS and many more