Collection: Rechargeable Batteries

Find the perfect rechargeable battery for your flashlight, headlamp, or device.

At FlashlightWorld.com, we carry a complete selection of lithium-ion batteries from trusted brands like Fenix, Nitecore, Acebeam, and Klarus — all designed for performance, safety, and long-term reliability.

Our batteries deliver consistent, high-drain power for professional and outdoor use.

Whether you need 18650 or 21700 batteries, each model is optimized for runtime, capacity, and protection.

We also offer a complete selection of rechargeable battery chargers compatible with all our flashlight brands.

✔ 100% authentic Fenix, Nitecore, Acebeam & Klarus batteries

✔ High-drain lithium-ion performance

✔ Built-in safety protection (overcharge, short-circuit, overheating)

✔ Rechargeable hundreds of times

✔ Fast shipping from Canada — no customs, full warranty support

Explore our complete lineup of:

• Fenix Rechargeable Batteries

• Nitecore Rechargeable Batteries

• Acebeam Rechargeable Batteries

• Klarus Rechargeable Batteries

• 18650 Rechargeable Batteries

• 21700 Rechargeable Batteries

• Battery Chargers

Shop Canadian. Shop Smart. Power your flashlight with confidence.

FAQ

Q1. What types of rechargeable batteries do you sell?

We offer lithium-ion rechargeable batteries in popular formats like 18650 and 21700, from Fenix, Nitecore, Acebeam, and Klarus.

Q2. Are these batteries safe?

Yes — all our batteries include built-in protection circuits against overcharge, short circuit, and overheating.

Q3. Can I use any charger with these batteries?

We recommend compatible rechargeable battery chargers from Fenix and Nitecore for optimal performance and safety.

Q4. How long do these batteries last?

Depending on usage, each cell can be recharged hundreds of times while maintaining stable output.