Nebo 21700 Rechargeable Battery 2 Pack - Black

The Nebo 21700 Rechargeable Battery 2 Pack offers a reliable power solution designed to restore fu...

Best current price£44.99from Homebase

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HomebaseNebo 21700 Lithium-Ion Rechargeable Battery With Usb-C Charge Port 2 Pack 3.7V 4000Mah
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£44.99
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wilko21700 3.7V 4000Mah Lithium-Ion Rechargeable Battery With Usb-C Charge Port 2 Pack Nebo
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Product Information

Full details

The Nebo 21700 Rechargeable Battery 2 Pack is an essential power solution for users who rely on high-drain Nebo lighting equipment and need consistent, long-lasting performance. Featuring integrated USB-C charging for maximum convenience, these batteries provide a combined 4,000mAh capacity to keep your tools running during extended tasks. While they offer excellent longevity and reusability, users must ensure their specific device is compatible with the 21700 cell size before purchase.

All features

ColourBlack
Model Part NumberNEB-BAT-0016-G
BrandNebo

Extended Product Information

FAQs

Can I use these in any flashlight?

No, these are specific 21700 lithium-ion cells. They are only compatible with Nebo or other devices explicitly designed to accept 21700 batteries.

How long does it take to charge?

Charging time varies based on the output of your USB-C power source; however, most standard 5V wall adapters will provide a full charge in a few hours.

Do I need a special charger?

No, these batteries have a built-in USB-C port, so you can charge them with any standard USB-C cable and phone charger.

What is the lifespan of these batteries?

These batteries are rated to be recharged hundreds of times, providing years of reliable service under normal usage conditions.

Can I charge them inside the flashlight?

Yes, if your Nebo device supports USB-C charging and is compatible with the 21700 cell, you can charge them directly inside the unit.

Troubleshooting

Battery does not charge

Ensure the USB-C cable is fully seated and verify the power source is active. Check the port for any dust or lint buildup.

Device is not turning on

Verify the battery is inserted with the correct polarity (+/-). If the device still does not function, check if the battery has a sufficient charge.

Charging light not activating

Try a different USB-C charging cable or a different wall power adapter to rule out hardware failure in the charging accessories.

Pros and Cons

Pros

  • Integrated USB-C port eliminates the need for external chargers
  • High energy density suitable for demanding LED lighting
  • Rechargeable hundreds of times for long-term value
  • Consistent power output compared to disposable alternatives

Cons

  • Not compatible with devices requiring standard AA or AAA batteries
  • Requires access to a USB-C cable for independent charging
  • Larger form factor than standard 18650 cells

Setup, Compatibility & Care

Before using the batteries, inspect the contact points on both the battery and your device to ensure they are clean and free of debris. To charge, connect a USB-C cable directly to the port located on the top of the cell. An indicator light will typically signify that the charge is in progress and complete. When storing, keep the batteries in a cool, dry place away from direct sunlight or extreme temperatures. Ensure the batteries are handled with care and never exposed to moisture, as this can damage the internal charging circuitry.

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