This Panasonic laptop battery replacement features Li-ion chemistry within its cells. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to memory effect common with older battery chemistry nor do they contain the toxic chemicals found in some older battery technologies. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty. Specifications for this battery are: Li-ion 10.8v - 4500mAh capacity. Fits these Panasonic laptops: Panasonic CF-M34N, Panasonic CF-M34R
* If your model is a Panasonic ToughBook CF-17, CF-34, CF-M34J, CF-M34T this battery will not work. Use our part number PAN-8
for these models. The battery pack is very similar but the computer chip set is different and will not work properly in your computer.