SamplexPower PST-300-12 Manuel Du Propriétaire page 23

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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 7.5 below:
tABLe 7.5: tYPicAL cYcLe LiFe cHARt
Depth of Discharge
% of Ah capacity
10
50
80
100
note: It is recommended that the depth of discharge should be limited to 50%.
Series and Parallel connection of Batteries
Series connection
24V Inverter
or 24V Charger
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 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
General Information on Batteries for
Powering Inverters
cycle Life of Group
27 /31
1000
320
200
150
Cable "A"
Battery 4
6V
cycle Life of Group
8D
1500
480
300
225
Battery 3 Battery 2
6V
SAMLEX AMERICA INC. | 23
cycle Life of Group
Gc2
3800
1100
675
550
Battery 1
6V 6V