It is recommended that you fully charge(generally recommend an overnight charge) and discharge the new Dell inspiron 1525 battery two to four times to allow it to reach its maximum rated capacity. It is normal for a battery to become warm to the touch during charging and discharging.
When charging the Dell inspiron 1525 battery for the first time, the device may indicate that charging is complete after just 10 or 15 minutes. This is a normal with rechargeable batteries. New Dell inspiron 1525 battery are hard for the device to charge; they have never been fully charged and not broken in. Sometimes the device's charger will stop charging a new battery before it is fully charged. If this happens, remove the battery from the device and then reinsert it. The charge cycle should begin again. This may happen several times during the first battery charge. Don't worry, it's perfectly normal.
Do not short-circuit. Do not drop, hit or otherwise abuse your Dell inspiron 1525 battery as this may result in the exposure of the cell contents, which are corrosive. Do not expose the battery to moisture or rain. Keep battery away from fire or other sources of extreme heat. Do not incinerate. Exposure of battery to extreme heat may result in an explosion. Do not disassemble battery, not only for the battery, but also harmful to your health.