This battery fits the original MacBook air 13 inch laptop. The Apple model of this laptop is A1237 which is printed in grey ink on the bottom of the laptop. You may have to hold the laptop at an angle to see the printing. This brand new Apple MacBook replacement laptop battery features lithium-polymer cells. Li-polymer battery technology provides longer run times with less weight. In
addition, Li-polymer batteries are not subject to the memory effect common with older battery technology. The installation of this battery does require that you disassemble the battery housing compartment of your laptop with tools that are provided with the battery. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty.
You can expect about 5 hours of run time with this computer battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 37 Whr.
Like all Li-ion primary batteries, your run time will decline over time.
This battery replaces the original 2008 Apple MacBook Air 13 inch series laptop battery. This battery fits Apple model A1237. You will find the Apple model number on the base of the laptop case. It is grey ink on an aluminum case so you may have to hold the laptop at an angle to see the model number.