Operating Instructions
Lifetime of the battery:
• Recharge deeply discharged batteries immediately:
Incipient Sulphation of the lead battery plates due to deep discharge is to
be prevented by charging soon, particularly in case of high ambient
temperatures. If the grade of sulphation is not too intensive, the battery can
recover part of the battery capacity after several charging/discharging
cycles. Deep discharge of LiFePO4 batteries is absolutely to be avoided!
• Partially discharged batteries:
In contrast to other battery types, lead and LiFePO4 batteries do not have
any harmful memory effect. As a result, in case of doubt, partially
discharged batteries have to be charged fully as soon as possible.
Always store only fully charged lead batteries. Recharge them
periodically, particularly in case of used (older) batteries and higher
temperatures.
• Keep the batteries cool and dry, LiFePO4 batteries preferably above
0°C. Choose an appropriate location for installation.
• In case of insufficient solar power and/or high current consumption, the
lead battery should be subject to occasional full charging by means of a
mains supply charger.
• Overvoltage Protection:
The 12 V solar controllers protect themselves against connection of
excessive battery voltage rates or will be switched-off in case of
defVOLTIMA additional charging systems (chargers, generators or similar
systems), switching threshold 15.0-16.0V, depending on the battery type.
• Overvoltage Limitation:
Sensitive consumers are protected by means of a limitation of the charging
voltage to max. 15.0 V during all modes of charging.
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