Best Buy: Lenmar Lithium-Ion Battery for TomTom One GPS GPS304TT
Amazon.com: CHGY 3.7V Battery Replacement Compatible with Tomtom One S4L Rider 2nd, One V2, One V3, One V5, One Version 3, One XL Dach TML, One XL Europe, Rider : Electronics
TomTom ONE 3rd Edition Battery Replacement Kit - Extended Life — NewPower99.com
MPF Products F650010252 1200mAh Extended Battery for TomTom One IQ V2 V3 V4 XL & XL-S GPS Devices (Not compatible with any of the TomTom One N14644
Li-ion Battery 1300mAh for TomTom One V2 V3 V5,ONE 3RD Tom Tom 4N00.004 One XL GPS F650010252 - AliExpress