Victron energy MultiPlus 12/500/20 Manuel page 30

APPENDIX E: charge algorithm
120%
100%
80%
Amps 60%
40%
20%
0%
Volts
64 32
64 32
16
60 30
60 30
15
56 28
56 28
14
52 26
13
52 26
48 24
12
44 22
11
48 24
40 20
10
Bulk
4-stage charging:
A
Bulk: Entered when charger is started. Constant current is applied until the gassing voltage is reached (14.4V resp.
28.8V, temperature compensated).
Battery Safe: If, in order to quickly charge a battery, a high charge current in combination with a high absorption voltage
PPENDIX F: temperature compensation
has been chosen, the Multi will prevent damage due to excessive gassing by automatically limiting the rate of voltage
increase once the gassing voltage has been reached.The Battery Safe period is part of the calculated absorption time.
Absorption: A constant voltage period to fully charge the battery. The absorption time is equal to 20x bulk time or the set
maximum absorption time, whichever comes first.
Float: Float voltage is applied to keep the battery fully charged and to protect it against self-discharge.
Storage: After one day of Float charge the charger switches to storage. This is 13,2V resp. 26,4V (for 12V and 24V
charger). This will limit water loss to a minimum. After an adjustable time (default = 7 days) the charger will enter
Repeated Absorption for an adjustable time (default = 1 hour).
Charge current
Charge voltage
Battery Safe
mode
20 x Bulk-hours or
Max. Absorption time
Absorption 1 day
Float
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7 days:
7 days
Storage
1 hour Repeated Absorption
Time
Time