A Lithium Ion Polymer rechargeable battery, designed for the TIKKA2 & ZIPKA2 line of headlamps, the CORE battery offers an advantage over regular batteries. It is very easy to insert and can be charged via any standard USB charger: a cell phone charger, a multimedia device, cigar lighter charger, or even a solar panel, a portable energy source, a computer, etc. The battery life is equivalent to that of more than 900 type LR03/AAA batteries: the CORE battery recharges up to 300 times.