This is an universal mobile battery charger from dealextreme. It supports nearly all sorts of mobile battery given it's adjustable charging pin. The charger is smart enough to detect the poles of the battery, and a small clip was used to fix the battery in place, so you can put battery of any size there virtually.
This charger is special that it also support charging of 18650 (or any other smaller Lithium ion battery). A switch is available to select whether you're charging a mobile battery or a 18650. There is also one more position to allow you to charge your mobile battery via the 18650 installed along side! Therefore, this could be serving as a portable charger as well.
Given it's versatility, a USB charger port is also available on the side, to allow charging of any devices via USB port.
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