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Originally Posted by JakeRich
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Kenban, what's the power draw with the X50 on, battery about 50%? If it draws 630 mA to charge when OFF, and about 400 mA when ON, then logic says it should be near 1 A charging and On, which is the state these charge and sync cables claim to support. Of course, USB can't support that (unless you have a powered hub).
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It does draw around one amp. I tried it out with a 1100mAh battery mind you it all depends on what you have running and what the brightness of your screen is and your processer speed. I think I had the brightness up and the processer down at 208mhz.
(I took my own advice to someone else took a radio shack power bank used a high current diode to drop the voltage and can use it to charge the axim) If I draw more then an amp it cuts the current and I have to unplug it and wait a sec for it to reset. When charging the 2200mAh battery I can't turn on the axim if I am charging the 1100mAh battery I just need to keep the processer speed or the screen brightness down and it works just fine.
SolSie I think even though the voltage is a little high you should be fine on that end BUT the 800mA output might be a little low you could charge the 1100mAh battery BUT not the 2200mAh battery. Also you would have to leave the axim off during charging. Although if the battery is charged you should be able to use the axim off that supply with no problems.