Samlexpower PST-15S-12E Owner's manual - Section 7 |
24 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 25
seCtIOn 7 |
General Information on lead Acid
Batteries
7.14 DePtH oF DiScHARGe oF BAtteRY AnD BAtteRY LiFe
The more deeply a battery is discharged on each cycle, the shorter the battery life. Using
more batteries than the minimum required will result in longer life for the battery bank.
A typical cycle life chart is given in the Table 7.6:
tABLe 7.6: tYPicAL cYcLe LiFe cHARt
Depth of Discharge
% of Ah capacity
cycle Life of Group
27 /31
cycle Life of Group
8D
cycle Life of Group
Gc2
10
1000
1500
3800
50
320
480
1100
80
200
300
675
100
150
225
550
note: It is recommended that the depth of discharge should be limited to 50%.
7.15 SeRieS AnD PARALLeL connection oF BAtteRieS
7.15.1 Series connection
6V
6V
Battery 4
Battery 3
6V
Battery 2
6V
Battery 1
24V Inverter
or 24V Charger
Cable “A”
Cable “B”
Fig 7.2: Series Connection
When two or more batteries are connected in series, their voltages add up but their Ah
capacity remains the same. fig. 7.2 shows 4 pieces of 6V, 200 Ah batteries connected in
series to form a battery bank of 24V with a capacity of 200 Ah. The Positive terminal
of Battery 4 becomes the Positive terminal of the 24V bank. The Negative terminal of
battery 4 is connected to the Positive terminal of battery 3. The Negative terminal of
battery 3 is connected to the Positive terminal of battery 2. The Negative terminal of
battery 2 is connected to the Positive terminal of battery 1. The Negative terminal of
Battery 1 becomes the Negative terminal of the 24V battery bank.