About this replacement
Swissvoice ePure Series — 3.7V Li-ion Replacement Battery (043048)
This 3.7V 900mAh Li-ion battery replaces the original pack in the Swissvoice ePure cordless handset. It fits the ePure, ePure fulleco DUO, ePure DECT 6.0, and ePure 6.0 among others. Swap it in when the handset cuts out early or stops holding a charge between calls.
- ePure platform fit: These models share the same 3.7V Li-ion cell format, connector pinout, and BMS communication protocol — the replacement slots in and the base station recognises it without configuration.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on the ePure platform. The BMS reported cell status correctly to the base station charge circuit with no error states at any point in the test.
- First charge after install: Place the handset in the base and leave it there for a full charge cycle before making any calls — Li-ion cells shipped in storage state need a complete first cycle to calibrate the fuel gauge in the ePure's base station display.
Talk time shorter than expected after fitting the new battery
Li-ion cells arrive partially discharged from storage. The ePure base station reads state-of-charge from the cell voltage, so a partially charged new pack will show a lower capacity estimate than the cell can actually deliver. Run two or three full charge-to-discharge cycles and the base station's estimate will settle at the true 900mAh figure. If talk time is still short after three cycles, check that the handset cradle contacts are clean and making solid contact with the charging pins.
Handset not pairing with base station after battery replacement
Removing the battery cuts all power to the handset's DECT module, which can erase the pairing registration stored in volatile memory on some ePure variants. The handset will show "searching" or fail to connect to the base after power is restored. To re-pair, hold the registration button on the base station for three seconds, then follow the handset menu to scan for and re-register the base. Once paired, the handset retains registration as long as battery voltage stays above 3.0V.