Datasheet

81
8. Effect of temperature on capacity
As is shown by the graph below, capacity reduces sharply at low temperatures.
9. Cycle life of Victron batteries
Batteries age due to discharging and recharging. The number of
2.
AGM Deep Cycle
10. Battery charging in case of cycle use: the 3
The most common charge curve used to charge VRLA bat
constant current phase (the bulk phase) is followed by two constant voltage phases (absorption and float), see fig. 3.
During the absorption phase the charge voltage is kept at a rela
reasonable time. The third and last phase is the float phase: the voltage is lowered to standby level, sufficient to compensa
self discharge.
Fig. 1: Effect of
Fig. 2: Cycle life
Fig. 3: Three step charge curve
Charge voltage
Capacity
(%)
Cycles
8. Effect of temperature on capacity
As is shown by the graph below, capacity reduces sha
rply at low temperatures.
9. Cycle life of Victron batteries
Batteries age due to discharging and recharging. The
number of
cycles depends on the depth of discharge, as is shown in figure
AGM Deep Cycle
Gel Deep Cycle Gel Long Life
10. Battery charging in case of cycle use: the 3
-step charge curve
The most common charge curve used to charge VRLA ba
t
teries in case of cyclic use is the 3
constant current phase (the bulk phase) is followed by two constant voltage phases (absorption and float), see fig. 3.
During the absorption phase the charge voltage is k
ept at a rela
tively high level in order to fully recharge the battery within
reasonable time. The third and last phase is the float phase: the voltage is lowered to standby level, sufficient to compensa
self discharge.
Fig. 1: Effect of
temperature on capacity
Depth of discharge
Fig. 2: Cycle life
Fig. 3: Three step charge curve
Charge current
Temperature
(
C
)
www.victronenergy.com
cycles depends on the depth of discharge, as is sho
wn in figure
teries in case of cyclic use is the 3
-step charge curve, whereby a
constant current phase (the bulk phase) is followed by two constant voltage phases (absorption and flo
at), see fig. 3.
tively high level in order to fully recharge the ba
ttery within
reasonable time. The third and last phase is the float phase: the voltage is lowered to standby level,
sufficient to compensate for
Fig. 1: Eect of temperature on capacity
Fig. 2: Cycle life
Depth of discharge
AGM Deep Cycle Gel Deep cycle Gel long life
12
12.5
13
13.5
14
14.5
15
0246
81
0
e de chargegatloV
0
20
40
60
80
100
120
Courant de charge
Charge voltage Charge current
Fig. 3: Three step charge curve
Gel and AGM batteries