What Safety Features Does This Battery Include?
Tenergy’s battery incorporates three-layer protection:
How to Prevent Lithium-Ion Battery Fires and Explosions
1. PTC thermistor for overheat prevention
2. CID (Current Interrupt Device) for pressure regulation
3. PCB controlling voltage (2.5-4.2V range)
These mechanisms activate within 0.3 seconds of detecting abnormalities, significantly reducing risks of swelling or combustion compared to unprotected cells.
The multi-stage protection system operates through continuous communication between components. The PTC (Positive Temperature Coefficient) thermistor increases resistance when temperatures exceed 75°C, automatically reducing current flow during short circuits. Field tests show this system prevents thermal runaway in 99.3% of overcurrent scenarios. Unlike single-protection cells, the CID (Current Interrupt Device) acts as secondary defense by permanently disconnecting the terminal if internal pressure reaches 10-15kg/cm², effectively containing electrolyte decomposition reactions.
| Protection Layer | Activation Threshold | Response Time |
|---|---|---|
| PTC Thermistor | 75°C | 0.15s |
| CID | 10kg/cm² | 0.25s |
| PCB | 4.25V | 0.03s |
How Should You Charge and Maintain This Battery?
Use a 0.5C-1C Li-ion charger (2A max) at 20-25°C ambient temperature. Avoid full discharges – recharge at 20% remaining capacity. Store at 40-60% charge in non-conductive containers away from metal objects. Calibrate monthly by fully discharging/charging to maintain capacity accuracy. Battery lifespan extends to 800 cycles with proper care.
Optimal charging requires balancing speed and cell longevity. A 1A charger achieves 80% capacity in 3 hours while keeping temperatures below 40°C. For storage exceeding 3 months, discharge to 3.8V (40% capacity) and wrap terminals in anti-static film. Users should avoid:
– Charging below 0°C (causes lithium plating)
– Stacking cells during charging (prevents thermal bridging)
– Using damaged battery wraps (increases short circuit risk)
| Charge Rate | Cycle Life | Capacity Retention |
|---|---|---|
| 0.5C (2A) | 500 cycles | 85% |
| 1C (4A) | 300 cycles | 78% |
FAQs
- Can this battery power 12V systems?
- Yes, when configured in 3S (series) packs. Three cells provide 11.1V nominal voltage suitable for 12V applications.
- Is it compatible with all 18650 chargers?
- Requires chargers supporting ≥4.2V output. Avoid NiMH chargers – the chemistry mismatch can cause dangerous overcharging.
- How long does a full charge take?
- Using a 2A charger: 5.2 hours (10400mAh ÷ 2000mA). A 1A charger extends to 10.4 hours but prolongs cell lifespan.