- All our laptop batteries are brand new with new case and new cells, we have 1 year
replacement warranty on these batteries. See more details at
- Please check your original laptop battery's OEM part number which is printed
on your battery label, laptop model number
with our postings and picture before the purchase to make sure you get the
- Upon initial use or after a long storage period, the laptop battery may need 3 - 4
cycles of charge / discharge before achieving full capacity.
- New battery is hard to hold charge sometimes, you may need remove the laptop battery from the
device and reinsert it for several times to wake up dormant cells. Occasionally,
BIOS updating is required to make the battery work normally on your device.
- See more battery tips at
Battery Care and
This page has been updated on 3/1/2015. It is
about A42-UL50 A42-UL80 8-Cell 4400mAh Asus U30 U33 U35 U45 U52 U53 UL30 UL50 UL80 Replacement Laptop Battery. The laptop battery is compatible to Asus A31-U53, A31-UL30, A31-UL50, A31-UL80, A32-U53, A32-UL30, A32-UL50, A32-UL80, A41-U53, A41-UL30, A41-UL50, A41-UL80, A42-U53, A42-UL30, A42-UL50, A42-UL80. It works on Asus U30, U30J, U30Jc, U30Jt, U33, U33J, U33Jc, U33Jt, U35, U35F, U35J, U35Jc, U45, U45J, U45Jc, U45Jt, U52, U52F, U53, U53F, U53J, U53Jc, UL30, UL30A, UL30Ag, UL30Jc, UL30Jt, UL30Vt, UL50, UL50A, UL50Ag, UL50At, UL50V, UL50Vf, UL50Vg, UL50Vs, UL50Vt, UL80, UL80A, UL80Ag, UL80J, UL80Jt, UL80V, UL80Vs, UL80Vt laptop notebook computers.