Dell Inspiron 3800 System Reference Manual page 115

Power Sources: Dell Inspiron 3800 System Reference
NOTES: An indicator that blinks rapidly when you check the battery's charge level indicates a temporary failure or a potentially recoverable failure like
overheating. Allow the battery to cool for several minutes before checking the charge level again.
If the battery is experiencing a permanent failure, when you press the battery test button, you will see no indicators. If you install such a battery into the
computer, the amber battery status indicator on the computer flashes rapidly. To purchase a new battery, call Dell or access the Dell World Wide Web
site at http://www.dell.com. Dispose of the old battery properly.
Percentage of Charge
When you press the battery test button, the number of indicators that light up shows an estimate of the remaining battery charge:
If one indicator lights up, the battery has 1 to 20 percent of its charge remaining.
If two indicators light up, the battery has 21 to 40 percent of its charge remaining.
If three indicators light up, the battery has 41 to 60 percent of its charge remaining.
If four indicators light up, the battery has 61 to 80 percent of its charge remaining.
If five indicators light up, the battery has 81 to 100 percent of its charge remaining.
NOTE: When charging a nickel-metal hydride battery, there may be a sudden jump in the reported charging percentage from partially
charged to fully charged.
First Low-Battery Warning
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1 Test button
2 Charge-level indicator