Gemini 4-Cell Battery - The Inside Line Mountain Bike Service Ltd.

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Gemini 4-Cell Battery

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Battery to keep your lights alive.


High Capacity 8000MAH LITHIUM-ION

Rated at 8000mAh brand's super high-capacity lithium-ion cells set a benchmark for energy density. At 15Wh per cell, the 4-Cell Battery 60Wh has the power to keep you going for much longer.

Fast, Convenient USB-C Charging

USB-C is the new standard and Gemini is 100% on board. The reversible 24-pin USB-C connector means saying goodbye to figuring out which way it goes in.

Charge Your Other Devices

In addition to charging the 4-Cell Battery, the intelligent USB-C port allows for charging other USB devices, such as your phone.

New Durable Outer Shell

A durable outer shell made of high-strength polycarbon has yielded an increase in double the impact protection from the previous generation.


  • 4-Cell Battery 60Wh 7.4V 8000mAh
  • Lithium Ion 4000mAh Cells
  • DC Port Input 8.4V, USB-C Input 5.0V
  • DC Port Output 6.0–8.2V, USB-C Output 5.0V
  • Onboard fuel gauge
  • SKU: BA4

* The 4-Cell Battery 60Wh is compatible with previous generation lights and chargers. The fuel gauge will only work when charging with the USB Charger 10W via the USB-C port. USB Charger 10W and USB Cables are purchased separately

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