make sure you use the same mAh, that the LG charger has.
My girlfriend used an iPad charger to charger her iPhone for awhile and the battery on her iPhone got bloated and had to be changed. I been told that the iPad charger has twice the mAh than the iPhone one.
just sharing my experience. If i was you ill just stick to the same mAh.
Output 4.8V @ 1A
This is true. The iPad charger is beastly. Mine reads 5.1V 2.1A. Don't think I'll be using that.
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