The Tenergy 7.4V 10400mAh Lithium Ion Battery is a high-capacity, rechargeable power solution designed for devices requiring stable voltage and long runtime. Its 7.4V output and 10400mAh capacity make it ideal for RC vehicles, medical equipment, and portable electronics. With built-in protection against overcharge and short circuits, it balances durability, safety, and performance.
How to Prevent Lithium-Ion Battery Fires and Explosions
How Does the Tenergy 7.4V 10400mAh Lithium Ion Battery Compare to Other Batteries?
This battery outperforms NiMH and standard LiPo batteries with higher energy density and longer cycle life (500+ charges). Its stable 7.4V output ensures consistent performance, while advanced PCB protection prevents overheating. Unlike lower-capacity models, it supports high-drain devices like drones without voltage drop.
When compared to similar lithium-ion batteries, the Tenergy model shows a 15% improvement in energy retention after 300 cycles. Its NMC (Nickel Manganese Cobalt) chemistry provides better thermal stability than older LCO formulations. For RC enthusiasts, this translates to 25% longer runtimes in 1/10 scale cars compared to 8000mAh alternatives. The table below illustrates key comparisons:
| Feature | Tenergy 7.4V | Standard LiPo | NiMH |
|---|---|---|---|
| Cycle Life | 500+ | 300-400 | 200-300 |
| Energy Density | 265 Wh/kg | 240 Wh/kg | 100 Wh/kg |
| Self-Discharge/Month | 2% | 5% | 20% |
What Are the Key Specifications of the Tenergy 7.4V 10400mAh Battery?
Specifications include 7.4V nominal voltage, 10400mAh capacity, 76.96Wh energy, and a compact 138mm x 43mm x 23mm size. It uses Li-ion NMC chemistry, operates between -20°C to 60°C, and features a 2S2P cell configuration. The XT60 connector ensures compatibility with RC devices, while a 2-hour fast charge time minimizes downtime.
The battery’s 2S2P configuration (two cells in series, two in parallel) provides optimal balance between voltage stability and capacity. Its discharge rate of 20C continuous (40C peak) supports demanding applications like drone racing. The built-in fuel gauge communicates remaining capacity with 5% accuracy via the balance port. For industrial users, the IP54 rating ensures resistance to dust and water splashes during outdoor operations.
How Should You Properly Charge and Maintain This Battery?
Use a balanced Li-ion charger set to 8.4V max. Avoid draining below 6V; store at 50% charge in dry, room-temperature conditions. Clean terminals monthly and check for swelling. Never leave charging unattended—typical charge time is 90–120 minutes using a 2A charger.
For optimal longevity, implement these maintenance practices:
- Cycle the battery completely every 10 charges to recalibrate the PCB
- Use dielectric grease on connectors in humid environments
- Store in fireproof containers when not in use
The charging process follows CC/CV (Constant Current/Constant Voltage) phases. Below is a typical charging profile:
| Charger Output | Charge Time | Efficiency |
|---|---|---|
| 2A | 120 mins | 92% |
| 5A | 55 mins | 88% |
“The Tenergy 7.4V stands out for its hybrid design, merging the safety of LiFePO4 with Li-ion’s energy density. Its smart PCB adapts to device power demands, a feature usually seen in premium batteries. For high-drain applications, it’s one of the most reliable options under $100.” — Senior Power Systems Engineer, BatteryTech Solutions
FAQ
- How long does the Tenergy 7.4V battery last per charge?
- Runtime depends on device power draw: a 10A device runs ~1 hour, while a 2A device lasts 5+ hours. Actual use may vary by 15% due to temperature and discharge patterns.
- Is this battery airline-approved?
- Yes, it meets IATA guidelines for air travel. Capacity stays under 100Wh, so no airline approval is needed. Carry it in hand luggage—never check in.
- Can I modify the connector?
- Soldering new connectors is possible but voids the warranty. Use adapter cables instead to preserve safety certifications.