Before storage or wintering, the MobilHybrid must be fully charged!!! Fully charge the MobilHybrid on the mains or generator for several hours. The percentage value of the battery indicator in the display is an internally calculated value and does not always reflect the real battery condition, therefore it is essential to charge the battery even if the percentage value is high. After complete charging, you can switch off the MobilHybrid at the main switch. If the unit is taken out of operation for a longer period of time (more than 2 weeks), it must be charged regularly (at least every 4 weeks). To prolong the life of the MobilHybrid, it is recommended to store the unit indoors if possible.