... 2.75V~3.0VWidely Operating Temperature:-30°C~ 0°C ;Self-discharge:>95%Features: 1. High operation voltage, Li-ion batteries ... produce 3.7 volts. 2. High energy density,3. Minimal self-discharge, less than 10% monthly. 4. Wide temperature range, ... level of safety Application:1, Portable Electronics: PDA , LCD light, Emergency Lighting2., Backup power supply, Medical Device Approval:CE, UL, ROSH ...