1. During storage periods, keep your lithium battery at a 40% charge state.
Although it is best to fully charge a battery before use, prior to storage of lithium-ion batteries it is harmful to fully discharge them. It's best to store lithium batteries at around 15 degrees Centigrade (5- 27 Centigrade range) and at a 40% charge level. The 40 per cent charge allows a stable condition even if it means a level of self-discharge. Some reserve charge is necessary to keep a battery and its protection circuit operational during long periods of storage. Batteries should be stored in a well-ventilated, dry place. And it is best to remove batteries from your mower when not being used. 2. Never leave your lithium battery at an elevated temperature.
Lithium-ion batteries do not like heat. By leaving a lithium battery at a constant high temperature, their lifespan, run time and charge capacity reduce significantly. They should be stored away from direct sunlight, heat sources, and water.
3. Avoid frequent full discharges of your lithium batteries.
One of the great advantages of a lithium battery is it has no memory effect, which means recharging a partially charged lithium battery is not harmful. And partial discharges with frequent recharges are much healthier for a lithium battery than one long deep discharge. High discharge rates contribute to damage and strain on a lithium battery. But by charging lithium-ion batteries at a slower charge rate and more frequently, you can expect the life of your lithium battery to be much longer.