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Charge & Discharge Controller
The Controller is a multi-function component of the PV system. It is primarily used for detecting the working status of the system and the charging/discharging of the batteries. It protects the batteries from being overcharged or over-discharged.
Its basic functions include:
- PWM charging
- 5 LED lights to display status of the system
- LCD to display system information
- Automatic charging
Its protection features include:
- Overcharging/discharging protection
- Low voltage alarm, shutdown and recovery
- Over-temperature prevention
- Over-voltage protection of the battery
- Over-current prevention of the system components
- Over-load and short-circuit prevention
Specifications
| Model |
JKTB-8A
12V/24V |
JKTB-12A
12V/24V |
JKTB-20A
12V/24V |
JKTB-30A
12V/24V |
| Maximum charge current(50°C) |
8A |
12A |
20A |
30A |
| Maximum load current(50°C) |
8A |
12A |
20A |
30A |
| System voltage |
12/24 Vdc |
| Maximum system loss |
7mA |
| Equalizing charge voltage |
14.7V@12.4V (SOC = 70%) |
| Quick charge voltage |
14.4V@11.7V (SOC = 40%) |
| Final charge voltage |
13.7V |
| Over-discharge protection voltage |
11.1V(SOC = 30%) |
| Over-discharge protection voltage |
12.5V (SOC = 50%) |
| Temperature compensation |
-4mV/Cell (can connect an external temperature sensor) |
| Control mode |
SOC or voltage |
| Battery type |
Lead-acid or Gel |
| Operating temperature |
-25°C – to 50°C |
| Weight (g) |
420 |
| Dimensions (mm) |
188x106x49 |
| Protection |
IP22 |
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