Replacement For:

42T492842T4929ASM P/N 42T4930FRU P/N 42T4931

Fit Machine Models：

LENOVO

ThinkPad-Edge-E220sThinkPad-Edge-E220s-5038ThinkPad-Edge-E220s-50382KUThinkPad-Edge-E220s-50382NUThinkPad-Edge-E420sThinkPad-Edge-E420s-4401ThinkPad-Edge-E420s-440128UThinkPad-Edge-E420s-440129U

Some great reasons to buy laptop batteries from us:

1> Lower prices than the average in the market for both original and OEM batteries.
2> Uses the highest quality graded and sorted SONY/Samsung/SANYO cells.  
3> Provides excellent discharge characteristics. Over 500-800 times of charge and discharge.
4> Utilizes state of the art printed circuit board (PCB) design to provide stable and safe performance.
5> Undergone comprehensive quality testing throughout the manufacturing and assembly process.
6> Includes a 12-month free replacement warranty for manufacturer's defects.
7> Fast shipping. Great after-sale service.

Precautions when using a original  battery:

1> Do not modify or disassemble it.
2> Do not incinerate or expose to excessive heat, which may result in an exposure.
3> Do not expose boo to water or other moist/wet substances.
4> Avoid piercing, hitting, crushing or any abuse use of the battery.
5> Do not forget to take away your battery from the device if you will not use it for a long time.
6> Avoid short circuit of the terminals by keeping your original  battery pack away from metal objects such as necklaces or hairpins.

Tips for maximizing discharge time and extend battery life:

1> Lower the brightness on the display.
2> Minimize background processes. 
3> Don't use the CD/DVD drive.
4> Disable your wireless antenna when not in use.
5> Check the Power Management settings are set to "Max original battery".
6> Remove the battery from the notebook PC when it is not being used or charged for a long period.
7> Purchase another battery to extend the overall operating time on battery.
8> Store the battery in a cool dry location.