Rolls Surrette User Manual

OPzV GEL ABSORPTION CHARGE TIME

Where : T = 0.38 x C /I

T = ABSORPTION CHARGE TIME

C = 20 hr RATED CAPACITY (total battery bank)

I = Charging Current (Amps) (recommended 20% of C/20 discharge

rate) 0.38 = ( 20%/50%) + 5% (5% is added due to losses)

EXAMPLE:

1 string of 2-Volt S2-1380GEL models

20 hr AH rate = 1571 AH

I = 20% of 1571 AH = 314 Amps

T = 0.38 x 1571/314 = 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 output 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.

NOTE:

If charger output is 288 Amps max

(ex 3 x 96 Amp controllers), 288 is used.

T = 0.38 x 1571/288 = 2.1 hrs

Storage Temperature Refresh Charge Interval

Below 20ºC (68ºF) 9 Months

20ºC (68ºF) - 30ºC (86ºF) 6 Months

Higher than 30ºC (86ºF) 3 Months

TABLE 8: OPzV GEL Storage Temperature & Refresh Charge