User manual

OPzV GEL ABSORPTION CHARGE TIME

Where: T = 0.38 x C /I T = ABSORPTION CHARGE TIME

C = 20 hr RATED CAPACITY (total AH capacity of battery bank)

I = Charging Current (Amps) (*see Note: CHARGING CURRENT on pg 11 for details)

0.38 = (factors in assumed current loss during Absorption charge phase)

EXAMPLE:

1 string of 2-Volt S2-690GEL models

C = 20 hr AH rate = 785 AH

I = 20% (recommended) of 785 AH = 157 Amps

T = 0.38 x 785/157 = 1.9 hrs

OPzV GEL FLOAT STAGE AND TERMINATION

To maintain the battery bank at 100% SOC, the charger continues to apply a Float

charge to the battery bank at the End Amps/Return Amps/Tail Current indefinitely

or until the charger is shut off or unplugged.

OPzV GEL REFRESH CHARGE

If Rolls OPzV GEL batteries are properly charged they should not experience

varied capacity loss or require balancing. If they were not properly charged and

there is a decrease in capacity, fully recharge the batteries at the recommended

voltage. It is important to prevent heavy-discharge. If the batteries will be stored for

extended periods of time, apply a periodic refresh charge. Frequency will depend

on storage temperature as noted:

DISPOSAL PROCEDURE

Batteries must NEVER be disposed of in household waste. To reduce environmental impact,

bring your spent OPzV GEL batteries to a certified recycling depot to be recycled.

OPzV GEL BATTERY CAPACITY & TEMPERATURE

Ideal operating temperature for OPzV GEL batteries is 25°C (77°F). Note that higher

operating temperatures will reduce cycle life due to cell degradation. Cycle life loss

is not recoverable.

Ex. Continuous operation at 35°C (95°F) will typically reduce cycle life by 50%.

Cooler operating temperatures will reduce battery capacity. Capacity is regained as

operating temperatures rise. To calculate the adjusted capacity, refer to Table 3 :

Cold Temperature Capacity Multiplier

NOTE:

If actual measured current is

120 Amps, or the maximum

charger output is limited to

120 Amps, 120 is used.

(Ex. 2 x 60 Amp controllers)

T = 0.38 x 785/120 = 2.5 hrs

Storage Temperature Refresh Charge Interval

Below 20ºC (68ºF) 9 Months

20ºC (68ºF) - 30ºC (86ºF) 6 Months

Higher than 30ºC (86ºF) 3 Months

TABLE 9: OPzV GEL Storage Temperature & Refresh Charge