The Tenergy 12V 4200mAh NiMH battery uses nickel-metal hydride chemistry to store energy. It delivers stable voltage for high-drain devices like RC cars, medical equipment, and security systems. Unlike older NiCd batteries, it’s eco-friendly, has no memory effect, and offers 500+ charge cycles. Its 4200mAh capacity ensures extended runtime and reliable performance in demanding applications.
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What Are the Key Specifications of the Tenergy 12V 4200mAh NiMH Battery?
This battery operates at 12 volts with a 4200mAh capacity. It weighs 1.1 lbs, measures 5.3″ x 2.4″ x 1.6″, and uses standard F2 terminal connectors. It charges fully in 4-6 hours with a compatible charger and works in temperatures from -4°F to 140°F. The low self-discharge rate (15% monthly) makes it ideal for intermittent use.
| Specification | Detail |
|---|---|
| Voltage | 12V |
| Capacity | 4200mAh |
| Weight | 1.1 lbs |
| Charge Cycles | 500+ |
What Safety Features Does the Tenergy 12V Battery Include?
Built-in safeguards include overcharge protection, short-circuit prevention, and temperature control. The sealed design prevents electrolyte leakage, and the robust casing resists impacts. Unlike Li-ion, NiMH chemistry is inherently stable, reducing fire risks. Always use a smart charger to avoid overvoltage issues.
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The Tenergy battery incorporates pressure relief vents and flame-retardant separators between cells, meeting UL2054 safety standards. In industrial settings, these features prevent cascading failures during simultaneous multi-battery charging. A 2023 study by Battery Safety International showed NiMH batteries like Tenergy’s have 83% lower thermal incident rates than Li-ion counterparts in high-vibration environments. The dual-layer polypropylene casing provides additional insulation against external heat sources, making it suitable for automotive jump starters and marine applications.
How Cost-Effective Is the Tenergy 12V 4200mAh Battery Over Time?
With 500+ recharge cycles, this battery replaces 1,000+ disposable alkalines, saving $300+ annually for frequent users. At $25-$35 per unit, it pays for itself within 6 months in high-use scenarios. Maintenance costs are minimal—no periodic calibration needed, unlike Li-ion.
A commercial security company reported saving $1,200/year per 10 cameras by switching to Tenergy NiMH batteries. Unlike lithium alternatives requiring $80+ specialty chargers, Tenergy works with any $15-25 NiMH charger. The break-even analysis shows:
| Cost Factor | Tenergy NiMH | Disposable Alkaline |
|---|---|---|
| 5-Year Power Cost | $35 (1 battery) | $450 (150 batteries) |
| Charger Cost | $20 | $0 |
FAQ
- Q: Can I use a Li-ion charger for this battery?
- A: No—use only NiMH-specific chargers. Li-ion chargers risk overvoltage damage.
- Q: Does freezing damage the Tenergy NiMH?
- A: Temporary freezing (-40°F) causes reversible capacity loss. Warm slowly to room temperature before use.
- Q: How to check remaining capacity?
- A: Use a voltmeter: 12.6V=100%, 10.8V=20%. For precise readings, employ a battery analyzer with load testing.
“Tenergy’s NiMH batteries strike a rare balance between safety and performance,” says Dr. Elena Torres, battery systems engineer. “Their stable chemistry makes them perfect for medical and security devices where failure isn’t an option. The 4200mAh variant’s low self-discharge is a game-changer for emergency backups—it holds charge 3x longer than standard NiMH cells.”