The batteries (main and additional) in my FujitsuSiemens S6120 don't charge any more. However the battery icon on Windows and the mains icon on the LCD show that power is getting to the machine. Possible relevant... I'm wondering if it's normal for the PSU to give 26V off-load (I can't easily try it on load). Could this make the charging circuit shut down? I've tried to take the thing to bits to look for a loose connection on the power jack but haven't managed to get it apart... yet.
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Re: Fujitsu-Siemens - Batteries won't charge
Whats the spec of your power supply (approx 19v dc @ 3 - 4 Amps...)
Voltage 'OFF LOAD' is irrelevant - its the power consumption (A) that you need to validate (Do not measure directly)
Does the Laptop power up under mains feed ?
Is your concern mainly the fact that the battery(s) are not charging ?
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If the laptop battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.
If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to an unacceptablecharge level then the battery needs to be replaced.
On the bottom of the laptop there should be a square panel about 1.25" square. It will have only one small phillips screw holding it closed. Open the compartment use a plastic fork to slide the battery out , taking note of it's polarity,(which side is up) they are availabl at most hardware and Radio Shack stores.