The Tenergy PCB 11.1V 5.7A Li-Ion Battery Pack is a high-performance power solution designed for devices requiring stable voltage and extended runtime. Its built-in protection circuit ensures safety against overcharging, over-discharging, and short circuits. Ideal for drones, RC vehicles, and portable electronics, it balances energy density, durability, and cost-effectiveness, making it a preferred choice for hobbyists and professionals alike.
How to Prevent Lithium-Ion Battery Fires and Explosions
What Safety Features Are Integrated into the Battery Pack?
The built-in PCB protects against overcharge, over-discharge, overcurrent, and short circuits. Thermal sensors monitor temperature fluctuations, automatically disconnecting power during extremes. These features prevent cell damage, fire risks, and ensure compliance with international safety standards like UL and CE.
Advanced safety mechanisms include a multi-stage voltage cutoff system that triggers at 12.8V (overcharge) and 8.4V (over-discharge), preserving cell integrity. The pack’s 25A continuous discharge rating includes a 10% safety buffer to prevent MOSFET overload. For thermal management, dual NTC sensors track individual cell temperatures, enabling chargers to adjust currents dynamically. This is critical for high-stress applications like drone racing, where rapid discharge cycles can generate excess heat. The epoxy-sealed PCB also resists moisture ingress up to IP54 standards, making it suitable for outdoor use in humid or rainy conditions.
Top 5 best-selling Group 14 batteries under $100
| Product Name | Short Description | Amazon URL |
|---|---|---|
|
Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
|
UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
|
Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
|
Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
|
Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
| Protection Feature | Activation Threshold | Response Time |
|---|---|---|
| Overcharge | 12.8V ±0.05V | <2 seconds |
| Over-discharge | 8.4V ±0.1V | <5 seconds |
| Short Circuit | 0.1Ω load | <50 milliseconds |
How Does Cost-Effectiveness Compare to Competing Batteries?
At $25-$35 per unit, Tenergy’s pack offers 500+ cycles versus 300-400 for cheaper alternatives. Over two years, this reduces replacement costs by 40%. Energy density (200Wh/kg) also means fewer batteries needed for high-power applications.
When analyzing total ownership costs, Tenergy’s battery outperforms competitors through superior cycle life and efficiency. For example, a typical 500-cycle lifespan equates to 1.37 years of daily use in commercial settings, compared to 0.82 years for budget packs. The 0.015Ω internal resistance reduces energy loss during discharge, translating to 8-10% longer runtime per charge. This efficiency gain is particularly valuable in solar power storage applications where every watt-hour counts. Third-party testing shows these packs retain 82% capacity after 400 cycles—15% better than industry averages.
| Brand | Cycle Life | Cost per Cycle |
|---|---|---|
| Tenergy | 500+ | $0.05 |
| Generic A | 350 | $0.09 |
| Premium B | 600 | $0.07 |
“Tenergy’s focus on cell balancing and thermal management sets their packs apart. The 3S configuration’s efficiency in high-drain scenarios makes it a go-to for drone racers needing reliability under 100A bursts. However, users must prioritize proper storage—90% of failures stem from improper voltage maintenance.” — James Carter, Power Systems Engineer
FAQs
- Q: Can this battery power a 12V device?
- A: No—11.1V nominal (12.6V fully charged) may damage 12V systems. Use only with compatible 3S Li-Ion devices.
- Q: Is balancing required during charging?
- A: Yes. Use a balance charger to maintain cell voltages within 0.02V difference, preventing premature failure.
- Q: What’s the average lifespan under heavy use?
- A: Approximately 18 months (500 cycles) when discharged to 20% capacity monthly. Avoid full discharges.