This is a generic, equivalent one, 100% compatible. This 3.7V 900mAh Replacement Li-ion battery is designed to compatible with TomTom CSTMR001SL XXL 540S 540M 540T 540TM XXL540S.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 3.7V
* Battery Capacity: 900mAh
* Chemistry: Li-ion
* Dimension: 45.19 x 33.87 x 6.27mm
* Condition: new, 1 Year Warranty!

Compatible with the following Part Number:
CS-TMR001SL, CSTMR001SL, P11P20-01-S02

This battery is compatible with the following TomTom GPS units:
Route XL
One XXL 540S
XXL540
XXL 540S
XXL540S
XXL 540M
XXL 540T
XXL 540TM
XXL 550
XXL 550T
XXL 550M
XXL 550TM

Package Included:
1 x 3.7V 900mAh Replacement Battery for TomTom CSTMR001SL XXL 540S 540M 540T 540TM XXL540S