SECTION 7 |
General Information on Lead
Acid Batteries
25
7.13 USE OF EXTERNAL PROGRAMMABLE LOW VOLTAGE
DISCONNECTS
The above ambiguity can be removed by using an external, programmable Low
Voltage Disconnect where more exact voltage threshold can be set to disconnect
the battery based on the actual application requirements. Please consider using the
following Programmable Low Battery Cut-off / “Battery Guard” Models
- 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-100 (100A) - For up to 1000W, 12V inverter or 2000W, 24V inverter
- BG-200 (200A) - For up to 2000W, 12V inverter or 4000W, 24V inverter
- BGB-250 or BDB-250 (250A) - For up to 3000W, 12V inverter or 6000W, 24V inverter
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%.
