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> Battery Charging Problem?
ptoki
post Oct 7 2012, 12:56 PM
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I had netwalker unused for a while. After plugging it to charger and booting it started to behave oddly.

Netwalker works fine but charging led (the one on netwalker) blinks and unit will not charge more than 70%.

When booted from halt witch charger unplugged it shows 10-12%. After just plugging charger and unplugging charge jumps to 70%.

I had left it charging (with blinking) for over 24h but it behaves the same.

Can any one suggest what happened?

I wanted to use it as small home media center for music and internet radio and for email but now I dont know how it will behave.
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ArchiMark
post Oct 7 2012, 07:41 PM
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Perhaps something about battery calibration went wrong due to not using netwalker for some time, battery level discharge too much?

Not sure how to recalibrate battery or reset system on this...as I don't have netwalker anymore....
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deluxe
post Oct 8 2012, 12:17 PM
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QUOTE(ArchiMark @ Oct 7 2012, 11:41 PM) *
Perhaps something about battery calibration went wrong due to not using netwalker for some time, battery level discharge too much?

Not sure how to recalibrate battery or reset system on this...as I don't have netwalker anymore....


A fairly standard way to recalibrate batteries is to discharge them fully, then charge all the way up to 100% (or as far as it'll go). This recalibrates the charging circuitry essentially, makes no change to the actual battery.
It may need repeating to achieve accuracy.

If the Netwalker won't actually turn on, making discharging the battery fully difficult, I'd remove the battery, then hardwire a small bulb of appropriate voltage in to the terminals to drain it. Then put the battery back into the Netwalker and leave it overnight to charge.

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