Advanced state-of-the-art internal circuitry protects the Olympus DM-620 from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle. * Gomadic Powerful High Wattage wall charger for home or travel use. Customized circuit design is based on the latest in power regulation and is tailored to the precise output voltage and resistor ID requirements of the Olympus DM-620 (accurate to 0.1v!) * Power Sleep" feature reduces vampire power draw 99%. Charger will consume less than 0.1W of power when in "dormant state" (e.g. not connected to the Olympus DM-620). * Uniquely engineered in a small, lightweight, and highly portable design, the Gomadic Olympus DM-620 Wall Charger travels easily, saving both space and time. * Foldable wall outlet plug makes for a very compact, portable design. Advancements in power circuit miniaturization now gives you an amazingly powerful charger for its size.