Store lithium-ion batteries correctly: where, how and how long?
The room for storage should be dry and protected from dust. The reason for this is a bridging between the positive and negative pole. This accelerates the higher the air humidity is. As a result, the battery starts to discharge itself, which increases the risk of discharging.
As already mentioned, temperature also plays a decisive role. A temperature between 10-40 degrees Celsius is recommended for batteries, but a cool room temperature of 15-20 degrees Celsius is optimal. Since higher temperatures accelerate aging, batteries should also be protected from sunlight and direct heat. A too low temperature, i.e. temperatures below 0 °C, should also be avoided. In winter, therefore, the batteries of cordless gardening tools should not be stored in the garage, but rather in a frost-free cellar or directly in the house.
During storage, care must also be taken not to store the battery for too long. Ideally, a period of up to six months should be observed. During long storage, the battery should have a state of charge of approx. 30-60 percent. With Power X-Change batteries, you can recognize this by the fact that 2 LEDs are still lit. In addition, the battery should be stored separately from the charger to prevent premature aging.