PSE-12275A Manual

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

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

Battery 2

Battery 1

24V Inverter

or 24V Charger

Cable “A”

Cable “B”

SECTION 6 | General Information on

Lead Acid Batteries