The Energizer EnergiStick 250 is the best Mini-USB portable charger and backup battery for your BlackBerry and More! The compact size and slim shape make it convenient to carry on your key ring and take it anywhere, and use it anytime! Works with the following: BlackBerry Bold / 8100/ 8300 / 8800 series and more. Motorola: KRZR K1 /KRZR MAXX K3/ SLVR L6i SLVR L6 / SLVR L7 / SLVR L72 HTC: Touch / S620 / P3470 series and more.