1100mAh Li-ion Extended Battery Tomtom One N14644 Shipping 3.7V, Li-Ion, 1100MAH Fit Model: TOMTOM 4EM0.001.01, N14644, V3, XL, IQ Part Number: TOMTOM 6027A0093901 53.00 x 34.00 x 4.00mm 2 YEAR WARRANTY