Re: External USB Battery Pack (60 Hour Portable Power Pack)
tadad1 , yeap the 9V battery circuits are wasting almost half of its power on heat as the circuit mainly uses the LM7805, directly steps the 9V down to 5V, and 4V goes out as heat through the sinks.
The other AA battery circuits uses boost converters, very efficient, but you'll need a pcb of some sorts due to many components.
Guess the security might think that they are homemade bombs.. haha :lol:
Hopefully the player arrives soon, today's the 5th day of postage. So i'll expect it somewhere today to the end of the week for it to arrive.
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Why are clones called MP4 Players, when they don`t play .MP4 at all?
It`s like an MP3 Player which plays Music CDs only.
T39 doesn''t sound as good as my T29
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