Rolls Surrette User Manual

OPzV GEL CHARGER INSPECTION
The charger cabling should be insulated and free of breaks or cuts. The cable
connectors should be clean and properly mated with the battery terminals to ensure
a snug connection. The charger’s AC cord should be free of breaks or cuts and the
wall plug should be clean.
OPzV GEL CHARGING GUIDELINES
To maintain good health, VRLA AGM batteries should be brought to a full charge
on each cycle or, at minimum, once every 6-7 days. Charge should be completed
in a ventilated area as gasses may still be released through the pressure relief
valve if the batteries are excessively overcharged. Never charge a frozen battery.
Ideal charging temperatures: 0°C-40°C (32°F-104°F).
OPzV GEL CHARGING CHARACTERISTICS
To maximize your battery life, a voltage regulated charger with temperature
compensation is strongly recommended. Refer to Table 7 OPzV GEL Charge
Voltage for the recommended voltage regulated charge profile. If using battery
temperature compensation, charger voltage should be set to 2.38vpc - 25°C
(77°F) to allow the proper voltage adjustment by the charger (3mv/ºC/Cell). If the
charger has a preset charge profile for OPzV GEL type batteries, verify that these
voltage settings follow the battery manufacturer's specific recommendations.
OPzV GEL BULK & ABSORPTION CHARGE
OPzV GEL batteries have a lower internal resistance than Flooded models, allowing
them to accept current more efficiently. It is recommended that the initial charge
current is set at 20% of C/20 of the battery bank (min 10% / max 30% of C/20) in
order to fully charge the batteries within a reasonable amount of time. It may be set
lower, however, this will increase the required charge time. It is very important that
OPzV GEL batteries are brought to a full charge frequently to prevent capacity loss.
It should also be noted that, unlike Flooded models, these batteries should NOT be
equalized to recover capacity loss. This program setting should be disabled in the
charge controller to prevent accidental overcharge.
The charger should deliver the initial max current at the programmed Bulk voltage
until the voltage limit is reached, then switching to the Absorption charge phase.
The charger should maintain the Absorption voltage until current tapers to the
programmed End Amps value (3-4% for OPzV GEL models).
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