Dell Latitude battery is not fully recharging
Posted on 2009-02-15
I have a Dell Latitude D830 that is less than 2 years old. I almost always use it plugged into AC power through a port replicator. At one point, I found that the original battery was completely discharged and would not accept a charge. I replaced this battery with a Rayovac replacement. Initiallly, the replacement battery showed 100% charged in power meter. I fully discharged and recharged per recommendations. The maximum recharge, according to the power meter, was then 95% or so. Subsequently, the battery continued to recharge to a lower and lower percentage. Power meter always indicates "Charging" even after turning the machine on after being off overnight. Again, I am on AC power at all times. Currently, Power Meter shows only 54% power remaining. It appears that the laptop is somehow reducing total battery capacitiy over time. I also suspect that this is how the first battery was ruined.
How can I isolate the cause of this problem and hopefully rectify it? Is there any diagnostic tool that would be helpful? Thanks iin advance for any help.