[SPAM] ASUS K40I Battery?/

[kikimy]

I tried to use my laptop on battery this morning but it wouldn't work. I am using Windows 7 and the icon box says 

(10% available, plugged in but not charging)

Laptop works fine when plugged in to mauns.

I have had a look in the Control Panel but can't find any means of checking the ASUS K40I Battery.
Link removed

Although I very seldom work the laptop on battery, when I go to bed I usually put the laptop in Sleep mode, instead of cloosing down so presumably the laptop is using battery overnight to have the necessary power required in the Sleep mode. I switch off at the mains power plug.

I have been following this practice fairly consistantly for about 6 months or so, but occasionaly closing down completely.

May I assume that the battery is knackered? It was new when I purchased the new laptop last year.

Is there a way to check the condition of the battery, or whether there is a charging problem with the laptop?