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According to the brochure of Deka 12v 60 a gel battery, it needs to be charged with a good constant potential, voltage regulated charger.  Charger should be an automatic temperature sensing charger. It should be set at 13.8 to 14.1 volts and 68 F for this gel battery.

Also there are a few points mentioned about recharging in technical sheet

While our VRLA batteries accept a charge extremely well due to their low internal resistance, any battery will be damaged by continual under- or overcharging. Capacity is reduced and life is shortened.

Overcharging is especially harmful to any VRLA battery because of the sealed design. Overcharging dries out the electrolyte by driving the oxygen and hydrogen out of the battery through the pressure relief valves. Performance and life are reduced.

If a battery is continually undercharged, a power-robbing layer of sulfate will build up on the positive plate, which acts as a barrier to recharging. Premature plate shedding can also occur. Performance is reduced and life is shortened. Therefore, it is critical that a charger be used that limits voltage.

The charger must be temperature-compensated to prevent under or overcharging due to ambient temperature changes. 

Important Charging Instructions

The warranty is void if improperly charged. Use a good constant potential, temperature-compensated, voltage-regulated charger. Constant current chargers should never be used on VRLA batteries.

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12 years 8 months ago
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Greentech Renewables
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