Capable of charging a single SLB-26 USB battery or two simultaneously Impact-resistant polymer construction SLB-26 button-top lithium ion battery on-board safety control circuit Streamlight now offers SLB-26 USB batteries for our products that accept them. Charge your batteries - one or two at a time - in the dual input charging cradle. It uses either USB or traditional AC/DC power sources for a wide variety of battery charging options.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }