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% Charged--Two Readings: Why the Difference?

I have a Xantera 600HD Power Pack and decided to try it out for a situation I might want to use it in. I wanted to see how long I could run a VCR and Epson S3 computer projector. I put in a tape 30 minute long and ran the two devices for 20 minutes. At the end of that time, I unplugged the two devices and turned off the PP. When I pressed the % charge button it showed 10%. After about 30 minutes I thought I'd charge up the battery and redo the test in a slightly different way. However, I decided to check the % charge and found it was now 50%. How does one explain this? BTW the two devices were doing just fine when I turned them off.

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                          Wayne Watson (Nevada City, CA)

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W. Watson
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Batteries bounce back a little after a heavy discharge and those meters are not good for much.

Tom

Reply to
Tom Biasi

"W. Watson"

** See the name of this NG - asshole ?

How does that simple, descriptive name suggest the detailed performance characteristics of some pile of f****ng shit you bought somewhere = " on topic " ??????????

....... Phil

Reply to
Phil Allison

Philly: Did you take your ugly pills this morning?

Reply to
sparky

He must have. It's rare to get an answer from him without the vituperation.

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Al in St. Lou
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Al in Dallas 

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                          Wayne Watson (Nevada City, CA)

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Reply to
W. Watson 

--
                          Wayne Watson (Nevada City, CA)

                        Web Page:
Reply to
W. Watson

When it come to percentage of charge left in the battery any meter is really just a guess.

They take the discharge curve of the battery at the devices rated current and assign values on the curve until the device wont function. Many things disrupt the accuracy.

Tom

Reply to
Tom Biasi

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