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When reliability meets performance, you get the 21700 Rechargeable Battery – 5000mAh, 3.7V Lithium Batteries (Flat Top, 4 Pack). Designed to power a wide range of high-drain devices, these batteries are the perfect solution for users who demand longevity, consistent power output, and rechargeable convenience.
🔋 High-Capacity Power – 5000mAh
With a massive 5000mAh capacity, these 21700 batteries provide extended run times, reducing the frequency of recharges and keeping your devices running longer. Whether you're using them in flashlights during a camping trip or in doorbells for home security, you’ll appreciate the extra energy.
⚡ Reliable 3.7V Output
Delivering a stable 3.7V output, these lithium batteries are ideal for high-performance electronics such as flashlights, headlamps, smart doorbells, RC toys, power banks, and more. You get consistent voltage that ensures your devices operate efficiently until the last drop of power.
🧲 Flat Top Design for Versatile Compatibility
The flat top design enhances compatibility with a wide array of devices that require 21700 lithium batteries. It’s a popular choice among flashlight enthusiasts and tech hobbyists who need secure fitting and reliable performance.
♻️ Rechargeable & Eco-Friendly
Say goodbye to single-use batteries. These 21700 lithium cells are fully rechargeable, helping reduce waste and save money in the long run. Compatible with most universal lithium-ion battery chargers, they recharge quickly and safely, offering hundreds of charging cycles.
🔒 Built-In Safety Protection
Equipped with overcharge, over-discharge, short-circuit, and overheat protection, these batteries are engineered for safety and longevity. You can count on them for peace of mind, whether you're using them in household gadgets or outdoor gear.
Perfect For:
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🔦 High-lumen flashlights
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🧢 Headlamps for hiking or work
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🔔 Smart doorbells and home security systems
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🚗 Remote-controlled cars and drones
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🎮 Electronic toys and gaming gear
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🔌 Custom power projects and DIY electronics
What’s Included:
✅ 4 x 21700 Rechargeable Lithium Batteries
✅ Individual packaging for easy storage and transport
✅ User-friendly & ready to use out of the box
Why Choose Our 21700 Batteries?
When performance matters, our 21700 5000mAh batteries deliver exceptional energy density, safety, and cycle life. Whether you're powering emergency tools or everyday devices, you’ll get reliable energy when you need it most.
🔋 Longer Life. Stronger Power. Smarter Choice.
Upgrade your battery game today with the dependable 21700 rechargeable battery 4-pack.