AW: RE: unable to start up freerunner after batterie was full down
michael at openmoko.org
Wed Jul 16 18:45:14 CEST 2008
Joerg Reisenweber wrote:
> Jumpstart the battery is very unlikely to help you out.
Joerg, can you explain this further?
I've actually had excellent luck jump-starting the battery. I set my
adjustable power supply at about 4.5V and I connect it directly to the
battery terminals for just a second, then measure the voltage on the
battery. If the battery voltage is still zero, I repeat. Usually after a
few "shocks" the battery comes out of its internal under-voltage protection.
I understand that GTA01 batteries have no hysteresis and need just one
"shock" (in fact Werner said "one electron" I think) to come out of
under-voltage protection. I understand that GTA02 batteries have
hysteresis and require more coulombs injected before they will recover.
Please explain, as I am writing this all up and want to explain it properly.
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