Lenovo ThinkPad L520 Battery 55+ This brand new Lenovo ThinkPad L520 42T4795 42T4794 replacement laptop 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 laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty. Tech Specs Lenovo brand; 10.8 Volts - also compatible with 11.1 Volt systems; 4400 mAh; also compatible with 4800 & 5200 mAh batteries; 6 Cell Li-ion - (9 Cell Here); Samsung (South Korea); Black; Assembled in China; 2 Year Warranty; 30 day full satisfaction guarantee; 300-500 recharge cycles; You can expect about 5 - 6 hours of run time with this ThinkPad L520 battery when new, depending on your energy use.
If you would like even longer hours of run time please check out our extended run battery LEN-15XT. Replaces these Lenovo ThinkPad T420 T420i laptop battery part numbers: 55+ 42T4702 42T4703 42T4704 42T4706 42T4708 42T4709 42T4731 42T4732 42T4733 42T4734 42T4735 42T4736 42T4737 42T4738 42T4751 42T4752 42T4753 42T4755 42T4756 42T4757 42T4763 42T4764 42T4765 42T4766 42T4790 42T4791 42T4793 42T4795 42T4797 42T4817 42T4819 51J0498 51J0499 51J0500 57Y4185 Battery 55 Battery 55+