CML-USB — PWM charge controller with USB output 10–20 A
Country: Germany · Model: CML-USB
A budget 10 or 20 A PWM controller for small 12 or 24 V solar home systems. The built-in USB output powers a phone or a lamp, and the deep discharge protection switches off the load before the battery is damaged.
- Models
- CML-USB-10, CML-USB-20
- Battery voltage
- 12 / 24 V (auto-detection)
- Charge/load current
- 10 / 20 A
- Max. PV voltage
- 30 / 50 V
Technical specifications
| Models | CML-USB-10, CML-USB-20 |
|---|---|
| Battery voltage | 12 / 24 V (auto-detection) |
| Charge/load current | 10 / 20 A |
| Max. PV voltage | 30 / 50 V |
| Ingress protection | IP20 |
| Certificates | CE, RoHS |
| Customs codes (for reference) | |
| HS code | 8504.40 |
| UKTZED code (Ukraine) | 8504405500 |
| CN code (EU) | 85044060 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
The controller monitors the battery voltage and disconnects the load on deep discharge. It detects the 12 or 24 V system voltage automatically. The PV input is rated 30 or 50 V, which matches ordinary modules for the bank voltage. The USB port makes it possible to charge phones without a separate converter. Two models, CML-USB-10 and CML-USB-20, are enough for systems with one or several small panels. The IP20 enclosure is installed only in a living space or a dry technical room, on a wall next to the battery so that the cables to it are short. The controller carries CE and RoHS marking.
How to choose
The 10 or 20 A rating is chosen by the total current of the modules and the load. If you need a display with the charge status, a data log and programming of lighting modes, better take the CXNup (10–40 A). For damp places the ECO-N-MPPT 85/15 with an IP68 enclosure is suitable, and for modules with a voltage above 50 V an MPPT controller is already needed, for example the CX-N-MPPT (30 or 60 A).
Request a price and lead time
CML-USB — PWM charge controller with USB output 10–20 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Does the CML-USB disconnect the load when the battery is discharged?
Yes, on deep discharge the controller disconnects the load and thereby protects the 12 or 24 V battery.
What is the USB output of the CML-USB controller for?
It is used to charge a phone or a power bank, or to power a USB lamp directly from the battery of the solar system.
What panel voltage does the CML-USB support?
Up to 30 or 50 V at the PV input. Modules with a higher open-circuit voltage must not be connected.
Can the CML-USB be installed outdoors?
No, the IP20 rating is intended only for dry rooms. Outdoors, a sealed box or a different controller is needed.
Which to choose, CML-USB-10 or CML-USB-20?
The rating must exceed the short-circuit current of the array and the load current. For one small panel 10 A is enough, and for several modules take 20 A.
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