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STARFLO SF-005 15A Solar Panel Charge Controller
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15A Mini PWM Solar Charge Controller For SF2440-30 Solar Water Pump



Control circuit: use MCU and professional software as the control center to fulfill intelligent system control.

Charging mode: use PWM high efficiency charging way. Boost, recovery and float charging auto work for battery long-life. Use temperature compensation.

High accuracy over discharging control by the discharging rate: Over-discharging control voltage modified by the battery discharging rate curve.
Self protection: protection to overload, outside and inside short circuit, reverse connection, thunder and lightning, PV panel reverse current, over charging and discharging etc. during the short circuit and overload protection, no any component will be damaged and need change, include fuse.
LED indication on system condition: LED indicating the system of charging, overcharge, power full, power low, over-discharge, over load, out short circuit, load on/off, etc.
Industry level production standard: wide temperature running area -35°C to +50°CNo adjustable hardware part: use flash memory to save all work control point instead of adjustable resistance, to protect the control work point from going off as the adjustable resistance value is easily changed by temperature and vibration, in order to make sure the control accuracy and reliability.
Operation :easy to operate, robust in design.
Two output modes: direct current output mode and 1HZ output mode. The1HZ output mode is very suitable for traffic caution light. 

Controller Panel Indications 


Rated charge current
Rated load current
Work voltage
12/24V Auto
Over load, short circuit protection
1.25 rated load current 60sec, 1.5 rated loads current 5sec, over load protection action. ≥3 Rated load current short circuit protection action.
No load current
Charging circuit voltage drop
≤0.26 V
Load circuit voltage drop
≤0.15 V
Over voltage protection
17V; ×2/24V
Work temperature
Industry stage:-35°C to +55°C;
Boost charge voltage
14.6V;×2/24V; (keep 10min)
Direct charge voltage
14.4V; ×2/24V; (keep 10min)
Float charge voltage
13.6V; ×2/24V;
Charge return voltage
Temperature compensation
-5mv/°C/cell (Boost charge, Direct charge, Float charge, charge return voltage);
Lower voltage indicate
12.0V; ×2/24V;
Over discharge voltage
11.1V(no load)- real-time modified voltage by the discharge rate; ×2/24V;
Over discharge return voltage
12.6V; ×2/24V
Control mode
PWM charge mode; modified discharge voltage by the discharge rate


  Problems & Troubleshooting

The charge LED indicator doesn’t light in green when sunlight gets the PV panel.
Check if the cable of solar panel connects properly.
The charge LED indicator flash quickly .
System over voltage or open circuit of the battery. check if the battery connects to the system cable properly or the charging circuit damaged.
The load LED indicator light but there is no power output.
Check if the load connects to the system properly.
The load LED indicator flash quickly and there is no power output .
Check output circuit .If the load short or over load occurs, remove the load and push the button and the controller will resume its work after 30 minutes.
The load LED indicator light slowly and there is no power output.
Overload occurs, remove some loads and push the button again and the controller will resume its work after 30 minutes.
System state LED indicator flash in red color and there is no power output.

 Over discharge of the battery. The controller will resume its work after finishing charge of the battery.

Notice: We usually suggest the customer to take the SF-005 controller with the solar water pump, for it can stable the voltage and current.

Sample order is very welcome to have a test, if need more technical specification, pls send email to us !

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      STARFLO SF-005 15A Solar Panel Charge Controller
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