22 | SAMLEX AMERICA INC.
Please consider using the following Programmable low battery cut-off / “battery
guard” Models manufactured by Samlex America, Inc. www.samlexamerica.com
- bg-40 (40A) – for up to 400w, 12V inverter or 800w, 24V inverter
- bg-60 (60A) - for up to 600w, 12V inverter or 1200w, 24V inverter
- bg-200 (200A) - for up to 2000w, 12V inverter or 4000w, 24V inverter
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 6.5 below:
tABle 6.5: 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%.
Series and Parallel connection of Batteries
Series connection
Fig 6.2: Series Connection
when two or more batteries are connected in series, their voltages add up but their
Ah capacity remains the same. fig. 6.2 above 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 Posi-
tive 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
6V
6V
Battery 4
Battery 3
6V
Battery 2
6V
Battery 1
24V Inverter
or 24V Charger
Cable “A”
Cable “B”
seCtIOn 6 |
General Information on
lead Acid Batteries
Содержание PSE-12125A
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