What Makes the Tenergy 7.2V 3800mAh NiMH Rechargeable Battery 11245 Unique?

What Makes the Tenergy 7.2V 3800mAh NiMH Rechargeable Battery 11245 Unique?

The Tenergy 7.2V 3800mAh NiMH Battery 11245 is a high-capacity rechargeable battery designed for devices requiring sustained power. Its nickel-metal hydride (NiMH) chemistry offers eco-friendliness, minimal memory effect, and stable voltage output. Ideal for RC cars, drones, and industrial tools, it balances energy density, durability, and cost-effectiveness, making it a versatile choice for hobbyists and professionals alike.

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How Does the Tenergy 7.2V 3800mAh NiMH Battery Compare to Li-ion?

Unlike Li-ion batteries, the Tenergy NiMH 11245 avoids thermal runaway risks, operates safely in wider temperature ranges, and maintains consistent performance under high discharge rates. While Li-ion offers higher energy density, NiMH excels in longevity and reliability for moderate-drain applications like RC vehicles and medical devices.

NiMH batteries demonstrate superior performance stability in fluctuating temperatures. For instance, when used in outdoor robotics exposed to seasonal temperature variations, the Tenergy 11245 maintains 85% of its rated capacity between -5°C and 40°C, compared to Li-ion’s 65-70% retention in similar conditions. The chemistry also allows partial charging without significant capacity degradation, making it suitable for equipment requiring frequent top-ups like emergency lighting systems.

Feature	NiMH (Tenergy 11245)	Li-ion Equivalent
Cycle Life	1,000 cycles	300-500 cycles
Thermal Stability	Safe up to 60°C	Limited to 45°C
Discharge Rate	15C Continuous	20C Continuous

What Are the Key Specifications of the Tenergy 11245 Battery?

This battery features a 7.2V nominal voltage, 3800mAh capacity, and a flat-top design for easy integration. It supports up to 1,000 charge cycles, has a self-discharge rate of 15% per month, and weighs 210g. Its operating range spans -20°C to 60°C, ensuring reliability in extreme conditions.

Which Devices Are Compatible with the Tenergy 7.2V 3800mAh Battery?

Compatible devices include RC cars/trucks, drones, robotics, cordless power tools, LED lighting systems, and medical equipment like portable oxygen concentrators. Always verify voltage and physical dimensions before use to ensure compatibility.

How to Properly Charge the Tenergy NiMH Battery 11245?

Use a smart NiMH charger with delta-V detection to avoid overcharging. Charge at 0.5C (1.9A) for optimal speed and battery health. Avoid discharging below 0.9V per cell (5.4V total) to prolong lifespan. Storage at 40% charge in cool, dry conditions minimizes capacity loss.

What Safety Precautions Should You Follow with This Battery?

Never puncture or expose to fire. Prevent short-circuiting terminals and use insulated storage. Charge in well-ventilated areas away from flammable materials. If swelling occurs, discontinue use immediately. Follow manufacturer guidelines for disposal/recycling.

Why Choose NiMH Over Other Battery Chemistries?

NiMH batteries like the Tenergy 11245 offer safer operation, better performance in cold environments, and lower environmental impact compared to NiCd or LiPo alternatives. They’re ideal for applications where consistent mid-range power delivery outweighs the need for ultra-lightweight solutions.

How to Troubleshoot Common Tenergy 11245 Battery Issues?

If experiencing reduced runtime, perform a full discharge/charge cycle to recalibrate the battery. For charging failures, clean contacts with isopropyl alcohol. Persistent issues may indicate cell imbalance—use a balancing charger or replace the pack if beyond 500 cycles.

What Are the Environmental Benefits of Using NiMH Batteries?

NiMH contains no toxic cadmium found in NiCd batteries, making them easier to recycle. Their long cycle life reduces waste, and stable chemistry minimizes leakage risks compared to alkaline cells. Proper recycling recovers nickel, steel, and rare-earth metals for reuse.

The closed-loop recycling process for NiMH batteries recovers 95% of the nickel content, which gets repurposed for stainless steel production and new battery cells. Municipal recycling programs in 48 U.S. states accept these batteries, with dedicated collection points at major electronics retailers. Compared to single-use alternatives, one Tenergy 11245 battery eliminates the disposal of 300-400 alkaline cells over its lifespan, significantly reducing heavy metal contamination in landfills.

Material	Recovery Rate	Common Uses
Nickel	92-97%	Stainless steel, new batteries
Steel Case	100%	Construction materials
Electrolyte	85%	Water treatment chemicals

How Does Temperature Affect the Tenergy 11245’s Performance?

Performance peaks at 20-25°C. Below -10°C, capacity drops by 20-30%; above 45°C, accelerated self-discharge occurs. Use insulated battery wraps in cold environments and avoid direct sunlight in hot conditions. For consistent operation, maintain packs within recommended temperature ranges during use/storage.

“NiMH remains the gold standard for moderate-drain applications needing reliability over decades,” says Dr. Elena Marquez, battery systems engineer. “The Tenergy 11245’s robust construction and stable discharge curve make it particularly valuable in industrial settings where unexpected power loss could compromise safety or productivity.”

FAQ

Q: Can I use this battery in a device designed for 6V?

A: No—7.2V exceeds 6V specifications and may damage sensitive electronics. Verify device voltage tolerance first.

Q: How long does a full charge take?

A: Approximately 2.5 hours using a 1.9A charger. Fast charging at higher currents is not recommended.

Q: Is this battery airline-approved?

A: Yes, NiMH batteries under 100Wh (like the 27.36Wh 11245) comply with FAA carry-on regulations when properly protected.