Amazon.com: Estry Battery Replacement for Tomtom GO 600 Go 50 Go 500 1EK0.052.02 4EK0.001.02 One 140 One 140S One 140S US 6027A0089521 AHA11110005 FMB0932008731 P2 VF65 VF6D : Electronics
Amazon.com: 800mAh Li-ion Replacement Battery for Tomtom One XL, XL 325 : Electronics
TomTom One XL Battery Replacement - iFixit Repair Guide