The Tenergy 17670 NiMH 3800mAh rechargeable battery offers high capacity, eco-friendly performance, and compatibility with devices like flashlights, medical equipment, and security systems. Its low self-discharge rate and 1,000+ charge cycles make it cost-effective and reliable for high-drain applications. Ideal for users seeking long-lasting power with minimal environmental impact.
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How Does the Tenergy 17670 Compare to Standard Alkaline Batteries?
The Tenergy 17670 outperforms alkaline batteries with its 3800mAh capacity, providing 2-3x longer runtime. Unlike single-use alkalines, it can be recharged 1,000+ times, reducing waste and long-term costs. It maintains stable voltage under high-drain conditions, making it superior for devices like digital cameras and tactical gear.
| Feature | Tenergy 17670 | Alkaline AA |
|---|---|---|
| Cycle Life | 1,000+ charges | Single-use |
| Cost per Cycle | $0.003 | $0.25 |
| Runtime at 2A Drain | 115 minutes | 42 minutes |
What Devices Are Compatible with the Tenergy 17670 Battery?
This battery works in devices requiring 17670/AA-sized cells, including LED flashlights, solar lights, RC toys, and medical devices like blood pressure monitors. Always check voltage requirements—NiMH batteries output 1.2V versus 1.5V for alkalines. Most modern electronics tolerate this difference, but confirm compatibility for sensitive equipment.
How to Properly Charge the Tenergy 17670 for Maximum Lifespan?
Use a smart NiMH charger with overcharge protection. Avoid “fast charging” unless urgent—opt for 500-700mA current. Charge at room temperature (59°F–77°F) and disconnect immediately post-charge. Partial charging (20%-80%) extends cycle life compared to full 0%-100% cycles. Store at 40% charge if unused for months.
For optimal performance, implement a refresh cycle every 30 charges: completely discharge then fully recharge using a analyzer charger. This recalibrates the battery’s capacity monitoring and prevents voltage depression. Avoid charging partially used batteries – NiMH cells don’t suffer from memory effect but perform best when cycled completely at least once per month.
Why Does the Tenergy 17670 Have a Lower Voltage Than Alkaline Batteries?
NiMH chemistry produces 1.2V nominal voltage versus 1.5V for alkalines. However, alkalines drop voltage rapidly under load, while NiMH maintains steady power delivery. Most devices compensate for this difference through voltage regulators or broader operating ranges (1.0V–1.5V). Test devices showing early low-battery warnings with NiMH cells.
Can You Use the Tenergy 17670 in Extreme Temperatures?
Performance declines below -4°F or above 122°F. Cold reduces capacity by 20%-30% but causes no permanent damage. Heat above 140°F accelerates self-discharge and may warp cells. For winter use, keep batteries in inner pockets until needed. Avoid direct sunlight in hot environments.
What Is the Environmental Impact of Using Rechargeable NiMH Batteries?
One Tenergy 17670 replaces 1,000+ disposable batteries, reducing landfill waste containing toxic heavy metals. NiMH contains recyclable nickel and steel—recovery rates exceed 90% in proper facilities. Over its lifespan, it generates 92% less CO2 than equivalent alkalines. Always recycle at end-of-life via Call2Recycle or similar programs.
The manufacturing process for NiMH batteries uses 35% less energy than lithium-ion alternatives. Unlike lithium batteries, they contain no conflict minerals and are exempt from UN transportation regulations for dangerous goods. When disposed properly, 97% of battery materials can be repurposed for stainless steel production and new battery components.
“The Tenergy 17670’s combination of high capacity and rugged construction fills a critical niche in professional settings. Unlike Li-ion, it doesn’t require complex battery management systems, making it inherently safer for medical devices. Its ability to hold 85% charge after a year of storage is exceptional for NiMH.” — John Keller, Power Systems Engineer
FAQs
- How many charge cycles does the Tenergy 17670 support?
- 1,000+ cycles to 70% capacity when properly maintained.
- Can I mix old and new Tenergy 17670 batteries?
- Avoid mixing—capacity differences cause unbalanced charging and reduced performance.
- What’s the shelf life when fully charged?
- Retains 75% charge after 3 years stored at 68°F (20°C).