For safety, you can use a 10-watt 6V or so zener diode, with the correct

orientation, in series with the 10-watt/10-ohm resistor to stop discharge

around 6 volts - or you can run the resistor alone if you monitor the

voltage continuously as the battery discharges (rather boring...;-).

--

David Ruether

d_ruether@hotmail.com

http://www.David-Ruether-Photography.com

"Tom D." <delo724@yahoo.com> wrote in message news:1a1adcc8.0310061147.32860e7e@posting.google.com...

> Thanks for your replies! I think I figured out what was going on with

> the battery. I used an external charger when I recharged it and it

> messed up the chip. To fix it, I ran the battery down by continuously

> recording for several hours. Interestingly enough, the camera ran for

> more than an hour after the low battery indicator came on. Then I

> recharged it ON THE CAMERA and the time came back up to over 400

> minutes as it origianally did. Seems it needed to be completely

> discharged to reset the chip. Hopefully, this will help someone else

> who has a problem. Maybe I'll try the resistor method on my old

> battery to see if it helps.

>

> Thanks Again for the replies, Tom D.

>

> > > I have a Sony Camcorder (DCR-TRV510) and I just recently got an

> > > NP-F750 Battery since the included NP-F330 was a real joke ! Usually

> > > it charges up to about 450 minutes or so according to the camera

> > > display. The last time I charged it, it showed FULL charge at only 264

> > > minutes. That's only about 58% of normal charge. Why would this happen

> > > so quickly ? Is there a way to "revive " this battery a bit since I

> > > haven't gotten much use from it at all.

> > > Your comments are greatly appreciated.

> > >

> > > Thanks, - Tom D. -

> >

> > Use a 10W 10 ohm resistor to discharge it across the terminals, there

> > have been warnings about completely discharging a Li-ion with this

> > method, yet others say the circuit prevents battery from being

> > completely discharged - I don't know what the facts are, but when the

> > resistor is cold I recharge the battery and it helps.