Nikon D40 Compact Battery Charger - Premium Quality TechFuel Battery Charger Quickly charges Nikon, Tech Fuel and other battery brands compatible with the Nikon D40 Cord free battery charger; flip out the power prongs and plug into the wall or power strip! Power prongs fold into the back of charger for compact storage and no equipment scratches. Charge your battery in your vehicle with included 12 volt DC adapter, connect the adapter to the charger base and power up. Tech Fuel "intelligent" circuitry prevents overcharging battery and adjusts for power variations; easy to read LED indicates when charging is complete. Works world-wide on AC 110V - 240V power. Built to last with quality components. No risk 30-day money back guarantee and 1-year .