Short apple laptop battery life in a laptop is mainly cause by heat rather than charge / discharge patterns. Try to avoid frequent full discharging of the Lithium battery.
For lithium battery for apple m6091 meter calibration,periodically do a full battery discharge, every 30 charges, to increase meter accuracy.
Another enemy of apple laptop battery life is heat. Avoid heat, heat is the Lithium battery's enemy, the temperature in a car can easily rise 50F in a single hour, in some cases reaching 140F. Keep the lithium-ion battery cool. Avoid a hot car.
An LED display. Although pricey, LEDs use much less power than LCD.
A smaller screen. A smaller screen means a smaller backlight, which will also save on apple m6091 battery drain.