MAN-230000-00 REV B
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APPENDIX D
– RECOVERY CYCLE FOR SULFATED
BATTERY CURRENT AND TIMER SETTINGS
When running a recovery cycle for a sulfated battery, use this table as a guide when
setting currents and timers.
Battery Capacity
Ah
Current Setting
A
Timer Setting
HH:MM
250
15
16:45
375
20
18:45
500
25
20:00
750
40
18:45
1000
50
20:00
1150
60
19:00
1360
60
24:00
If the capacity for the battery you wish to recover is not listed in the table, use the
following procedure to calculate first the recovery cycle current setting and then the
timer setting.
NOTE: Do not attempt to recover a battery with a capacity of less
than 250 Ahrs.
1. Current = (battery capacity in Ahrs)/(100 Ahrs) x (5 A)
2. If necessary, round up the current
ONLY
to the next highest current in
increments of 5 A. For capacities over 1200 Ahrs, select 60 A (the maximum
value allowed)
3. Time = battery capacity in Ahrs
current
4. If necessary, round the time to the nearest increment of 15 minutes. For
capacities over 1200 Ahrs, select 24 hours (24:00)
5. If the time calculated is greater than 24 hours (the maximum timer setting
allowed), a second cycle is recommended with the timer reset for the time over
24 hours (e.g., if you calculate 33.33 hours, a second cycle at 60A with the timer
set for approximately 9.33 hours
—closest setting 9:15—could be used)
Example:
a. Battery capacity = 850 Ahrs
b. Current = (850 Ahrs)/(100 Ahrs) x (5 A) = 8.5 x 5 A = 42.5 A; current setting
must be in increments of 5 A, so select 45 A.
c. Time = 850 Ahrs = 18.89 hrs
45 A
d. The timer should be set for 19 hrs 0 min (19:00)
