great product power bank

I use power bank charger this for my Samsung/Google Nexus 4g Android phone. I can charge my phone and spare battery at the same time from a wall charger. This charger also has a micro usb port. So you can use you micro usb cable to plug into you PC or car USB port.

No instructions though, and i didn't want to plug my battery in the wrong way. I didn't see any positive negative indicators on the charger terminals. So i used a volt meter to see which one is which before i plugged in the battery. If your staring at the face of the charger with the big Lumsing logo, the gold terminal on the left is positive + and the gold terminal on the right is negative - ). Look on your battery for polarity markings and plug in your battery appropriately. My battery has 3 terminals, and the middle one should be ignored for charging purposes. I'm not to sure what happens if you plug in the battery backwards????? Probably just wont charge, maybe the led on the charger lets you know somethings wrong. I don't feel testing it.

Looks like it would charge any of the batteries listed. Works exactly as advertised for the two different External battery charger I use in my Galaxy S2. I use the standard Samsung battery and also an aftermarket hi-cap battery. The charger stays in my pack/bag so I can charge anytime. After purchase, I received an e-mail from the vendor reminding me that they will warrant the charger for 12 months, making this a very good value.

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