Item # HA10128
100% compatible with your Plantronics CS540 and C054 wireless headsets
3.7V 140 mAh
High quality battery
Easy to replace
1 year warranty for peace of mind
On average your Plantronics CS540 (C054) battery will need to be replaced every 2 years. This replacement battery is 100% compatible with your CS540 and C054 wireless headsets.