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2012-07-03
, 21:24
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Joined on Jun 2012
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#12
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I just bought used N900 for 40 euros. It is my server now 
. I've put a timer for the charger so its not always charging the battery.
. I've put a timer for the charger so its not always charging the battery.
Then, pick up one of those external USB backup devices; the ones that are basically a Li-on battery, charging circuit, and USB input/output. Plug a standard wall-wart power supply into that to charge it, hook the output to your DC-DC module, and the output of that to the N900 battery pins.
This would allow you to have a battery backup(if the AC power fails for any reason), would be safe, and would provide enough power for the N900 without potentially under/overcharging the battery.
My projects: BackupMenu - OS Backup & restore | Video: Flashing your n900(LiveCD)
My devices: N770 + 8GB SD card soldered internally, N900 with 8GB SD card + Custom OC(125-950 typically).
OC freqs: 0:22,90 125:22,90 250:28,180 500:30,360 550:32,400 600:34,430 700:39,430 750:41,430 805:45,430 850:47,500 900:50,500 950:54,500 1000:58,500 1100:67,520 1150:71,520