HP OmniBook 3000 Notebook PC - Manual (Page 17)

Using OmniBook Plug-In Modules
Using the Secondary Battery
1-17
To maintain and preserve battery life
To preserve the life of your battery, be sure to charge the battery regularly. In cases
of long-term storage, the battery must be charged at 20-50% to save capacity loss by
self-discharge and to avoid deterioration of battery performance.
In a discharge condition, the battery voltage decreases faster. Storage in a 100%
charged condition can cause higher self-discharge and deterioration of discharge
capacity—even after recharging compared to storage in a 20-50% charged
condition.