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SONY VAIO VGN-FW490JBB battery charge problem

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majid_tech

majid_tech

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Hi -i cant write english propertly please excuse me -charge indicator of the laptop is on and charge rate is 20,520mw But the battery is not charging over 46% .

please help
 

How old is the battery?
What's the voltage on the battery - both measured and rated?
 
majid_tech said:
Hi -i cant write english propertly please excuse me -charge indicator of the laptop is on and charge rate is 20,520mw But the battery is not charging over 46% .

please help
Click to expand...

Also check the contacts and output voltage of the charging adaptor it should be considerable higher than the battery voltage I.e. about 5 volts.
 
hi - thank you for answer --- Battery has been working for four years - i clean battery connector but Did not result

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The battery is charged to 46% After 46% charge rate is 20.520mw and but battery is not charging over 46%

If disconnect and reconnect the charger to the laptop , battery is charging to 47%


voltage on the battery about 12Volt
 

After 4 years, it is probably the battery that needs replacement.
 
kam1787 said:
After 4 years, it is probably the battery that needs replacement.
Click to expand...

I agree battery usually have about 5 years of life of so many times you can charge and discharge, but still it shows that it is chraging to 46% puzzles me. But if you can get hold of new bettery you will know for sure if it is the battery that is indeed at fault. Take it to the computer repair shop and see if they have one that they can try out.
 
burt007 said:
it shows that it is chraging to 46% puzzles me.
Click to expand...

I suspect the battery can only charge to a point - below what it could before.

Still it could be the charging circuit, or even the monitoring circuit or app.

My bet is the battery.

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majid_tech said:
voltage on the battery about 12Volt
Click to expand...

You measured the battery out of the computer? But did you place a load across it? You need to have a load across it to get a truer voltage. Try placing a 47 to 100 ohm resistor [say 5 watts] across the contacts.
 
thank you my friend for help me - after replace battery charger circuit Mosfet, The problem was solved and battery charged to 100%
 

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