Charge Compaq Presario v5000 Series Replacement Battery before storing. The recommended charging time should not exceed 1 hour.
Higher Watt hours (Whr) or milliAmpere hour (mAH) on the same system under the same operating conditions means longer battery run time. For example, if you compare the same system, running the same applications, the compaq presario v5000 series battery with 75Whr would provide approximately 37% more run time than the 53Whr Compaq battery.
New compaq presario v5000 series battery comes in a unused condition, you should first fully discharge the capacity of the battery(let the laptop turn off auto). And then for 2~3 charge(suggest overnight) and discharge cycles before achieving maximum capacity.
When charging your compaq presario v5000 series notebook battery for the first time your computer may indicate that charging is complete after just 10 or 15 minutes. Don’t worry, this is normal with rechargeable batteries. Just simply remove the compaq presario v5000 series from the laptop and repeat the charging procedure.
To get maximum performance from the battery, fully optimize the notebooks power management features prior to use.
If you have 2 or more pack of battery, it's wise to discharge and then fully charge it on battery power once a week or so, just to keep the battery fresh conditions.