PWM Solar Charge Controller ZT
PWM charging from 10A to 100A, with dual PV inputs, a USB outlet and an external aluminium heat-sink plate.

Technical features
- Dual PV input, lead-acid and lithium batteries supported
- Larger case and an external aluminium plate for heat dissipation
- Three-stage charging, light control and time control
- SOC protections
- Battery type selectable: GEL, SLD, FLD
- Parameters adjustable in the menu
- LCD display
- USB output
- Temperature compensation
A PWM controller regulates by holding the array at battery voltage rather than tracking a maximum power point. The range is specified with dual PV inputs, three-stage charging, light and timer control, a USB outlet and an external aluminium plate behind the case for heat.
Ten to a hundred amps across four case sizes. The 10 A and 20 A models show the input voltage on a single reading; from 30 A the display cycles through solar, battery and load, shows whether it is day or night, and the system voltage can be locked instead of following the automatic setting.
Model range
Specifications
10A · 20A · 30A · 40A · 50A · 60A · 80A · 100A
| Specifications | 10A | 20A | 30A | 40A | 50A | 60A | 80A | 100A |
|---|---|---|---|---|---|---|---|---|
| PV input | ||||||||
| Dual PV input | Yes | |||||||
| Max solar panel input power (12V) | 130W | 260W | 390W | 520W | 650W | 780W | 1040W | 1300W |
| Max solar panel input power (24V) | 260W | 520W | 780W | 1040W | 1300W | 1560W | 2080W | 2600W |
| Max solar panel input power (48V)* | On request | On request | On request | On request | 2600W | 3120W | 4160W | 5200W |
| * The datasheet lists 48 V input power for the 50 A and 60 A models while also rating those two below 50 V system voltage. Contact us and we will confirm which applies to the configuration you need. | ||||||||
| Battery | ||||||||
| System voltage | <50V | <50V | <50V | <50V | <50V | <50V | <100V | <100V |
| System voltage setting | Auto 12V/24V | Auto 12V/24V | Auto 12V/24V, or manual | Auto 12V/24V, or manual | Auto 12V/24V, or manual | Auto 12V/24V, or manual | Auto 12V/24V/48V, or manual 12V/24V | Auto 12V/24V/48V, or manual 12V/24V |
| Float charge | 13.8V / 27.6V / (55.2V) | |||||||
| Absorption charge | 14.4V / 28.8V / (57.6V) | |||||||
| Equalisation charge | 14.6V / 29.2V / (58.4V) | |||||||
| Battery type* | GEL, SLD, FLD, lithium on request | GEL, SLD, FLD, lithium on request | GEL, SLD, FLD | GEL, SLD, FLD | GEL, SLD, FLD | GEL, SLD, FLD | GEL, SLD, FLD | GEL, SLD, FLD |
| * The feature list states lead-acid and lithium support across the range, while the specification table lists lithium only for the 10 A and 20 A models. Please confirm the battery chemistry with the model you intend to order. | ||||||||
| Load output | ||||||||
| Rated discharge current | 10A | 10A | 20A | 20A | 30A | 30A | 40A | 40A |
| Load disconnection (LVD) | 10.8V / 21.6V / (43.2V) | |||||||
| Load reconnection (LVR) | 12.6V / 25.2V / (50.4V) | |||||||
| Load control mode | Always on, light control, or light and timer control | |||||||
| Control and display | ||||||||
| Charging control mode | PWM | |||||||
| USB output | Yes | |||||||
| Display* | Single reading | Single reading | Three rotating pages | Three rotating pages | Three rotating pages | Three rotating pages | Three rotating pages | Three rotating pages |
| * From 30 A the display cycles through solar, battery and load readings and shows the system voltage and whether it is day or night. The 10 A and 20 A models show the input voltage only. | ||||||||
| Environment | ||||||||
| Working temperature range | −20 °C to +55 °C | |||||||
| Temperature compensation | −24 mV/°C (12V system) | |||||||
| Heat dissipation | External aluminium plate | |||||||
| Packing | ||||||||
| Set per carton | 50 PCS | 50 PCS | 40 PCS | 40 PCS | 30 PCS | 30 PCS | 20 PCS | 20 PCS |
| Carton weight | 20.95 kg | 20.95 kg | 19.75 kg | 19.75 kg | 19.2 kg | 19.2 kg | 21.5 kg | 21.5 kg |
| Carton measurement | 615 × 375 × 245 mm | 615 × 375 × 245 mm | 550 × 395 × 245 mm | 550 × 395 × 245 mm | 455 × 420 × 270 mm | 455 × 420 × 270 mm | 535 × 475 × 425 mm | 535 × 475 × 425 mm |
| Carton volume | 0.035 CBM | 0.035 CBM | 0.045 CBM | 0.045 CBM | 0.044 CBM | 0.044 CBM | 0.1 CBM | 0.1 CBM |
* Rows marked with an asterisk are configuration-dependent. Contact us and we will confirm the exact rating for the model you need.
Source note: Models follow the ZT20 / ZT40 / ZT60 / ZT80 groups in the datasheet; carton quantities and dimensions are taken from its packaging page.
Installed in the field
Photographs of this series in customers' own vehicles.
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