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Charging information for lithium batteries
Lithium batteries should never be deep-discharged, this will damage the lithium cells
irreparably. All lithium batteries should always be stored at medium charge. If a battery is
not needed for a longer period of time, please do not fully charge it before - this will put the
lithium cells into unnecessary “stress”, which can lead to a shortened lifetime in the long run.
If you have the choice when using the battery, we recommend not to charge it completely,
but to always use it in the medium voltage range. Of course, the battery can be fully charged,
for example when driving long distances - it is only technically speaking the best thing not to
do this for a lithium battery in order to get the maximum performance and life out of it. The
lifetime of lithium batteries is given in charge cycles. Don’t think you “waste” many charge
cycles by recharging the lithium battery more often even though it is not “drained” - this is
completely wrong! The life span indicated in charging cycles refers to so-called full cycles.
This means that if you discharge your battery 50% and then fully charge it again, this cor-
responds to ½ charging cycle. Charge twice, corresponding to one full cycle. We recommend
recharging a lithium battery at 25% residual charge up to approx. 80% charge level.
During the wintering or long storage of vehicles with lithium batteries, it is absolutely nec-
essary to recharge them at least once a month up to approx. 60%. For lithium batteries only
use chargers approved and recommended by the manufacturer. Charging with too high a
charge current to be able to charge faster can irreparably damage the lithium cells and in the
worst case can lead to fire.