Hubsan USB external battery charger (by HELIX) for H107D Plus and H107C Plus

I have both the H107C+ & the H107D+ ...this is a nice little charger that works fine. The USB connector lights up when charging and turns off when done. It takes about the same amount of time to charge a battery as charging it in the quad itself.There is a tiny "+ -" on the connector for the battery, you need to make sure the pins and electrical contacts "line up"...as it is not "keyed" you could insert the battery 180 degrees off and could damage the pins if you pushed too hard, just my opinion...has not happened to me.Now they just need to make a version that can charge 4 at a time ;)

This has made charging the battery for my quad super easy and convenient. I liked the quad but charging the quad via a USB cable and leaving it out for my kids to mess with is not a good idea. This way I can keep the quad stored when not using it, and still charge the battery before use. I highly recommend it.

Works great! Allows you to charge a spare battery while the quadcopter is flying or charging. Gets you back in the air faster. Highly recommended.

Doesn't seem to fully charge the battery as expected.

It works fine

Works perfectly.