Xtend Brand Replacement For Genuine Lenovo 57Y4536 Battery

Genuine Lenovo 57Y4536 UltraBay Battery 43 (3 Cell) This secondary 57Y4536 battery is used to double up your ThinkPad's battery capacity. On select models of ThinkPad laptops, you will find a slot opening near the CD bay. This bay slot is dedicated for a second battery & is a great feature not found on many laptops these days. This Lenovo/IBM 57Y4536 Battery is compatible with ThinkPad T400 Series, T500 Series, R400 Series, T410s Series, R500 Series, W500 series, T60 Series, Z60 Series, select R60 Series notebooks and is compatible with the ThinkPad X6 UltraBases.

This 57Y4536 UltraBay battery will provide approximately 1-2 hours of additional run time on top of your main battery pack. This brand new battery features lithium-ion cells. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This Lenovo 57Y4536 Battery is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty. Tech Specs Xtend brand; 10.8 Volts; 2000 mAh or 32 Whr; 3 Cell Li-ion; Samsung (South Korea); Black; Assembled in China; 1 Year Warranty; 30 day full satisfaction guarantee; 300-500 recharge cycles; Combined with a 9 cell extended run main battery you can achieve 6-9 hours of run time depending on your power settings.

Replaces this
IBM laptop battery part number: 57Y4536 0A36310 FRU P/N 45N1041 ASM P/N 45N1040