Dead ibook.... new battery...battery on moherboard???

I have an iBook 500 Mhz... it recently started having issues with the date and time wich i attributed to the dying battery that didn't hold the charge for long... one sad day it didn't turn on anymore.... which i attributed once again to the dead and discharged battery... so i bought a brand new battery from the apple store wich came in with half charge... so i plugged it a few hours ago to completely charge the battery before turning on the computer (as it said on the manual when the compter was brand new). So now i looked at the battery charge status and the same two leds are illuminated... seems like it is not charging.... and i tried to turn the computer on to no avail...
any comments or suggestions...?
does the ibook motherboard has a battery like the desktop computers? when that battery (which among other things holds the date and time) dies the computers don't turn on... could that be the case here?
Thanks for your help...

Hi, and welcome to Apple Discussions.
Does the adapter charge the battery? Does the adapter power the iBook?
Have you tried resetting the PMU?
In our experience here, if there is a problem with the dc-in board, the iBook will not run on the AC adapter, nor will the adapter charge the battery. The iBook will only run from a charged battery. If the battery charges and/or the iBook runs on the adapter, then it is likely not the dc-in board.
The same symptoms can happen with a bad adapter (no charging, not running on the adapter).
This doesn't sound like what is happening with yours, however.
There is a capacitor on the logic board which maintains the date and time settings. That capacitor could be malfunctioning, or it could be a malfunctioning PMU (also a part of the logic board).

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