Do you want to charge your battery and use it for a long time? This dual battery charger must be a good product which can meet your needs. Perfect charger for rechargeable lithium battery, automatically charges them to the level required, will no over-charge cells, will not charge over-discharged battery.This UltraFire charger is a dual channel charger which you can select 3.0V or 3.6V switch before plug-in power supply. It is used for charging CR123A battery. If your battery is this model, the charger can quickly charge it in your office or on the road. This dual battery charger is an ideal travel charger and also will bring more convenience for you. Plus, the dual battery charger is very easy to use, just put your battery in it, and select 3.0V or 3.6V switch before plug-in power supply. At this moment, the charger indicator will show you the charging status clearly. This CR123A charger can charge two batteries at the same time. Of course, you can also charge one battery at a time according to your choice. And lightweight design makes it very convenience to carry with anywhere which you can put it in your bag. This UltraFire dual battery charger is so useful, what are you waiting for?