Thread: [WIP] Extended Akku Other Half
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dirkvl is offline dirkvl
2014-03-02 , 12:42
Posts: 1,104 | Thanked: 5,652 times | Joined on Feb 2010 @ Holland
#46
Originally Posted by cvp View Post
Unfortunately, the efficiency is not really good. A 3200 mAh battery for a single and not even fully charge a 2100mAh battery is unfortunately a waste of.
I decide to use a different variant of the external battery.
this can't be a surprise.

this is a diagram from the pololu website


where they also state that their stepup regulators will operate in 70-90% efficiency. this also goes through the charging regulator on the phone side, which will also not be 100% efficient.