Here are some pick per request.
I found that letting the ext batt completly drain and then charging works best.
While the phone is in the ext batt you can charge through the ext batt case. If the power switch is set to, ON, it will charge both ext battery and phone.
If the switch is set to off, it will only charge the ext batt. The case does have an opening to charge the phone only if you want.
It does have protection circutry to preven overcharging. The case seems to be made of the same polycarbonate material as the One X plus. Has nice feel to it.
It is a bit pricey compared to others but build quality and circutry make it a worthwhile investment. (You get what you paid for.)
As I stated earlier, it is bulky but for those who care more about battery life than style so far its a win win for me. I am not a techie per say, just and everyday user giving an honest review. I will do my best to answer any questions.
Rich
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