The power arrangements for this laptop are as follows:
The battery is lithium-ion, 14.8v, 4400mAH (type F4809). It has a row of LEDs on the side to indicate the state of charge.
The mains power supply delivers 18.5vDC through a cylindrical connector, which powers the laptop when on mains, and charges the battery via circuitry built into the laptop. There is a light on the front of the laptop which is amber when the battery is charging, and turns green when it is fully charged.
Well, that's what's *supposed* to happen. What *actually* happens is this:
If I 'charge' the battery for (say) 24 hours, the lamp is amber for the whole time and never turns green. If I remove the battery immediately after 'charging', it is stone cold and none of the charge indicator LEDs light when the test button is pressed.
Even after a long charging period, the battery won't start the laptop if mains power is not present. If when the laptop is running, mains power is removed, it stops dead.
If I run the laptop without a battery present, the charge lamp flashes amber (but is solid amber if a battery is present).
I have tried putting one of the batteries in the freezer for 2 days, and then thawing it and attempting to charge it - all to no avail.
Sorry for the long pre-amble! My question is this:
How can I tell whether the problem lies with the battery or with the internal charger? Are there any clues in what I have written above? I don't mind buying another new battery but, if the charger is duff, I will have wasted my money.
I usually run it on mains anyway, so it's not a total disaster if I can't make the battery work - but one does tend to expect a laptop to have its own built-in UPS!
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