A backup battery provides power to a system when the primary source of power is unavailable. Small backup batteries may be primary cells; rechargeable backup batteries are kept charged by the prime power supply.
7.2V 3500mAh capacity battery cartridge for Allty 2000, 116g in weight, with Micro-USB charging port and charging indicator light built-in. Compatible with Magicshine Allty 2000 bike lights sold after November...
A great enhancement, worth every penny to ride longer. Replacement Li-ion 3.6v 3400mAh cartridge battery for the Volt 700/800 also used as an upgrade for the Volt 300/400 to double headlight run time. Pair it...
A great way to extend your rides beyond might night with this cartridge. Simply charge it and keep it on your epic rides. Be it brevets, explorations and tours, this...
Lithium battery for compatible devices - lights, cyclocomputers etc.
Cateye Lithium Battery | CR2032
*Note: Cateye use sourced batteries from different manufactures.