Do not modify or disassemble acer aspire 5742-7620 battery.
When you prepare to charge your battery, make sure the temperature is around the room temperature.
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 acer aspire 5742-7620 battery with 75Whr would provide approximately 37% more run time than the 53Whr Acer battery.
Acer aspire 5742 7620 battery packs should ba charged for 12 hours when you first get them.
Don't leave your acer aspire 5742 7620 battery inactive for extended periods of time. Even if you use AC power most of time, use the battery periodically to keep it in good condition. Unplug your AC adapter when the computer is not in use to prevent overcharging.
New acer aspire 5742-7620 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.
We suggest removing the acer aspire 5742-7620 Battery from your acer laptop when running on fixed power.
To get maximum performance from the battery, fully optimize the notebooks power management features prior to use.
Make sure to plug your acer aspire 5742-7620 laptop charger adapter into a UPS and not directly into a power outlet or surge protector.
Avoid short circuit of the terminals by keeping your acer aspire 5742-7620 battery pack away from metal objects such as necklaces or hairpins.
Do not expose the battery pack to direct sunlight. Never store or use the battery pack in an unventilated vehicle where excessive internal temperatures may be encountered.