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2nd 386 External Battery Help

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First post, by GabrielKnight123

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I have a second 386 motherboard but this one is a Shuttle HOT 307 and it has the same 4 pin external battery option and I have removed the rechargable battery. The only info I could find is here:

http://arvutimuuseum.ee/th99/m/S-T/30743.htm

and I have taken some pictures here:

http://s836.photobucket.com/user/sierragames/ … 7%20Motherboard

my first mobo had a H82C206 chip that member Lazibayer helped with info about it and I have another chip that is similar but it is F82C206 from Opti, would this be the same to use 4.5 volts for the RTC as I have successfully got a 3x AAA battery to work with my AMI M321 motherboard.

When I put the 3 AAA batteries in a battery holder my multimeter shows 4.8 volts and not 4.5 volts would the extra 0.3 volts be bad for the RTC?

Reply 1 of 2, by quicknick

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The two chips are equivalent, just different manufacturers. Up to 6 volts should be ok, no worries at 4.8.

Edit: seen the pictures, it's PLCC vs QFP. Still the same chip.

Reply 2 of 2, by GabrielKnight123

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Thanks again Quicknick, I ended up pulling apart one of thoes small flash lights that hold 3 AAA batteries and some electrical tape with a cable from a pc speaker to make a battery it should last about 4 years

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