OLIGHT Omni-Dok Universal Battery Charger For 18650 RCR123 AA AAA 16340 17670 14500 with AC adapter, Two RCR123A rechargeable Li-ion batteries with Two Edisonbright AA-&gt;D battery spacer shells Olight Omni-Dok able to simultaneously and safely charge different types of batteries are charged independently with smart charging technology to regulate power accordingly Battery power indicators monitor individual charging status of each battery at 25%, 50%, 75% and 100% Olight RCR123A Li-ion Rechargeable Batteries 2 pack with integrated overcharge & discharge protection circuits Overcharge protection stops charging when a cell has reached a full charge Bundle includes RCR123A rechargeable batteries, 2X EdisonBright AA to D battery converter spacers