Get longer laptop battery life with a new Acer Extensa 4420 battery.
The superior South Korean lithium-ion cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries.
This Extensa 4420 battery replaces the Extensa 4420 as well as the Acer Aspire 2420, 2920, 3640, 5550 and the TravelMate 3240, 3250, 3290, 4320, 4520, 6231, 6291 and 6492 series laptops.
Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. This laptop battery replacement is typically superior to the original battery and is 100% compatible with your Acer notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.