The Tenergy 7.2V 3500mAh Li-Ion Battery is a high-capacity rechargeable battery designed for devices requiring stable power output. Its lithium-ion chemistry ensures long cycle life, lightweight design, and minimal self-discharge. Ideal for RC toys, drones, and medical equipment, it balances energy density and safety with built-in protection circuits against overcharge and overheating.
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What Are the Key Specifications of the Tenergy 7.2V 3500mAh Battery?
The Tenergy 7.2V 3500mAh Li-Ion Battery delivers 25.2Wh of energy with a nominal voltage of 7.2V. It weighs 150g and features a cylindrical form factor (65mm x 34mm). Operating between -20°C to 60°C, it supports 500+ charge cycles with a low self-discharge rate of <3% per month. Includes overcurrent, over-discharge, and short-circuit protection.
| Parameter | Value |
|---|---|
| Energy Capacity | 3500mAh |
| Peak Current | 10A |
| Charge Temperature | 0°C – 45°C |
How Does the Tenergy 7.2V Battery Compare to NiMH Alternatives?
Unlike NiMH batteries, the Tenergy Li-Ion offers higher energy density (3500mAh vs. 2600mAh typical for NiMH), lighter weight, and no memory effect. Li-Ion cells maintain voltage stability under load, critical for high-drain devices. However, NiMH batteries tolerate deeper discharges and extreme temperatures better, making them suitable for low-budget applications.
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When considering long-term costs, lithium-ion technology proves more economical despite higher upfront pricing. A typical NiMH battery lasts 300-400 cycles before capacity drops to 60%, while the Tenergy Li-Ion retains 80% capacity after 500 cycles. For applications requiring rapid discharge rates (like RC racing), the Tenergy’s 10A continuous output outperforms NiMH’s 5-7A limitations. However, users in sub-zero environments might prefer NiMH’s -30°C operational capability despite its 30% heavier weight per watt-hour.
Which Devices Are Compatible with This Battery?
Compatible devices include RC cars (e.g., Traxxas Slash), drones (DJI Phantom 3), portable medical monitors, LED lighting systems, and cordless power tools. Verify voltage and connector type (Tamiya, JST, or XT60) before use. Not recommended for devices requiring >10A continuous discharge unless using parallel configurations.
How to Maximize the Lifespan of Your Tenergy Battery?
Avoid discharging below 3V per cell. Store at 50% charge in cool, dry environments. Use a balanced charger (0.5C rate recommended). Recalibrate every 30 cycles by fully discharging/charging. Never expose to temperatures above 60°C or puncture the casing. Cycle life can exceed 800 charges with proper maintenance.
Implement a storage rotation system for multiple batteries – label each unit with purchase dates and cycle counts. When charging after long storage periods, initiate with a 0.2C trickle charge for cell balancing. For drones consuming 15-20A bursts, limit continuous full-throttle usage to prevent excessive heat buildup. Use thermal wraps in high-vibration environments to protect internal connections. Advanced users can monitor cell voltages through compatible smart chargers to detect early signs of imbalance.
What Safety Features Does This Battery Include?
The battery integrates a Protection Circuit Module (PCM) with multi-layer safeguards: overcharge (cutoff at 8.4V±0.2V), over-discharge (2.5V±0.1V), and short-circuit protection (response time <50ms). Flame-retardant casing and pressure relief vents minimize thermal risks. CE, RoHS, and UN38.3 certifications ensure compliance with international safety standards.
“The Tenergy 7.2V 3500mAh sets a benchmark in mid-voltage Li-Ion solutions. Its hybrid cathode material (NMC + LCO) balances energy density and thermal stability—a game-changer for RC enthusiasts needing runtime without compromising safety. The 20mΩ internal resistance ensures minimal voltage sag under 10A loads, which is rare in consumer-grade packs.” — Dr. Elena Marquez, Battery Systems Engineer
Conclusion
The Tenergy 7.2V 3500mAh Li-Ion Battery delivers professional-grade performance for hobbyist and commercial applications. With robust safety protocols, high cycle life, and versatile compatibility, it outperforms traditional NiMH alternatives while maintaining user-friendly charging requirements. Proper maintenance ensures years of reliable service across diverse use cases.
FAQs
- How long does it take to charge fully?
- Using a 2A charger: 2.5 hours (0-100%). A 1A charger requires 4 hours. Fast charging (3A) is not recommended due to reduced cycle life.
- Can I use this battery in cold environments?
- Yes, but capacity drops by 25% at -10°C. Insulate the battery and avoid charging below 0°C to prevent lithium plating.
- Is parallel/series configuration supported?
- Parallel connections increase capacity (e.g., 2x 3500mAh = 7Ah). Series configurations require matching cells and external BMS. Not advised for novice users.