When we see this we slip in a new battery and retest. Hopefully the old battery has not fried the charging circuits. If the new battery doesn't cure it we swap the motherboard. Usually that nails it.
There are just two parts to change but sometimes the owner expects us to fix a battery or motherboard. How do you explain that we don't do that?
i have a latitude 820 one day while working on battery battery was down and laptop shutdown.after that laptop is not starting on battery .
battery meter is shoing 40%charging but actualy it is not charging.battery led is showing two leds glowing.how to trouble shoot this.it is working perfectly on a/c.