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18650 lithium battery 7.4V 6600mAh rechargeable solar Li-ion lithium ion Battery Pack for Headlamp
| Model | 18650-2S3P |
| Nominal voltage | 7.4V |
| Nominal capacity | 6600mAh |
| Charging method | Constant current 1C to 8.4V, then charge with constant voltage 8.4V till charge current less than 0.01C |
| Max discharge current | 1C |
| Discharge cut-off voltage | 6V (PCM over-discharge detection) |
| Operating environment | Charging: 0°C ~ 45°C; Discharging: -20°C ~ 60°C |
| Lifespan | >500 times (80% Prime Capacity) |
Product Images:
1. New Batteries: Initial visual inspection required. Batteries are shipped half-full; no special activation needed.
2. Storage: Charge to 50%-70% if stored long-term. Keep temperature below 25ºC.
3. Charging: Use matching chargers. Ensure ventilation. Avoid fast-charging non-fast-charge series to prevent capacity loss.
4. Warnings: Do not submerge in water; Do not mix fresh and used batteries; Do not reverse (+) and (-) terminals; Do not dispose in fire.
