Replacing battery with Lithium Ion

[Damion]

On my A2000, I simply removed R803 (current-limiting resistor for the original NiCd) and replaced with a germanium diode (1N60)... then soldered the coin socket directly to the board and used a regular CR2032. Cheap, looks best IMHO, and nothing special to order. :-)

 

[Damion]

@Sandman

I wouldn't have thought of it either, but I had the motherboard out to replace some caps, so it kind of caught my eye after staring at things for a few hours. :lol:

Would this work the same on a A3000?

I haven't looked at the A3000 yet, but I plan on doing that one next - probably it's just as easy. :-)

[Damion]

Sandman wrote:
-D-

Any reason for using the germanium 1N60 instead of just using a 1N914 switching diode?  I'm pretty electronics illiterate. :hammer:

There's less voltage drop. The OKI RTC chip should stay alive with as little as 2v, so the small difference (as much as 0.5v) could matter when the battery is worn.