MLI Ultra 12/1250, 24/1250 – User and Installation Manual
7. STORAGE AND CARE
If necessary, use a soft clean cloth to clean the MLI Ultra. Never use any liquids or acids.
The battery should be stored in a dry and well-ventilated environment. The rate of self-discharge is less
than 3% per month. High or low ambient temperature affects the self-discharge rate of the batteries and
natural aging.
If the battery will not be used for a period exceeding 3 months, we advise the following:
• If external AC power is available switch off all loads and switch on the charger. Apply a float voltage
as specified in the following table.
• If no external AC power is available:
- Charge the battery to > 80% of its capacity before storage.
- Long press the Battery switch-button to open the safety relay, see page 7.
- Make sure MasterBus powering is not set to "Always on" (see Configuration tab in MasterAdjust).
CAUTION!
In this setup the batteries can be kept at least 6 months without maintenance. However, it is
highly recommended to charge the battery to over 80% of its capacity every 100 days.
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