To better use your toshiba pa3331u-1brs battery, please take care of the precautions listed below :
1. The simplest and most obvious way of getting the maximum life out of toshiba pa3331u-1brs battery is to ensure that it always works well within its designed operating limits. There are however some further actions which can be taken to increase the battery life.

2. Do not modify or disassemble toshiba pa3331u-1brs battery, as the materials inside may be toxic and may damage skin and clothes.

3. Do not incinerate or expose battery to excessive heat, which may cause the battery to rupture. Also avoid placing batteries in water or other moist device, as this may cause the battery to fail.

4. Do not pierce, hit, step on, crush or abuse toshiba battery.

5. Store the batteries in a cool place and when in use don't allow them to remain in environments which may be subject to overheating.

6. Never solder anything directly to toshiba pa3331u-1brs battery. This can destroy the safety features of the battery by damaging the safety vent inside the cap. Permanent connections to an energy cell may be made by spot welding solder tags to the terminals. A soldered connection can subsequently be made to the tag.

7. Never reverse charge or overcharge with high currents (i.e. higher than rated). Doing so causes rapid gas generation and increased gas pressure, thus causing batteries to swell or rupture. Don't leave the battery in the charger once it is fully charged.