Overview
PowMr POW-Keeper1220-30-40 is an MPPT solar charge controller series (20A / 30A / 40A) for 12V/24V systems with auto recognition. It supports a battery voltage range of 8V~32V and includes an LCD display, dual USB output, and load/lighting control functions for solar power systems.
Key Features
- MPPT technology: tracking efficiency not less than 99.5%; peak conversion efficiency up to 97%.
- 12V/24V auto recognized; system voltage can be selected from the display interface.
- Battery types (selectable): USE (User default), SLD (Sealed), FLD (Flooded), GEL, LFE (LiFePO4), LI (Lithium / Li(NiCoMn)O2). For lithium batteries, manual setting is required.
- Display interface supports viewing parameters such as total charge power, load mode, load disconnect voltage, float voltage, and load reconnect voltage (press “MENU” to view/change parameters).
- Load working modes: Manual Mode (24H); Solar Light Control Mode (Sunset–Sunrise: Sunset on, Sunrise off); Solar Light + Time control (Sunset on + time + Sunrise off).
- Protections listed: reverse current, reverse polarity protection, overload protection, short circuiting, overcharging, over-discharging.
- Temperature sensing and compensation coefficient: -4mV/°C/2V (25°C).
Specifications
| Brand | PowMr |
| Model Number | POW-Keeper1220-30-40 |
| Type | MPPT Solar Charge Controller |
| Is Smart Device | Yes |
| Certification | CE, FCC, RoHS |
| Protection class | IP30 |
| System rated voltage | 12/24V Auto recognized |
| Battery voltage range | 8V~32V |
| Maximum current options | 20A / 30A / 40A |
| Rated charge current | 20A (20A model) / 30A (30A model) / 40A (40A model) |
| Max. open-circuit voltage of PV array | <60V (20A model) / <75V (30A model) / <100V (40A model) |
| Maximum input power |
20A: 260W (12V), 520W (24V) 30A: 390W (12V), 780W (24V) 40A: 520W (12V), 1040W (24V) |
| Rated discharge current | 20A (20A model) / 20A (30A model) / 30A (40A model) |
| Battery type | User default, Sealed, Flooded, GEL, LiFePO4, Li(NiCoMn)O2 |
| Equalize charging voltage (12V system) | Maintenance-free lead-acid: 14.6V; GEL: 14.2V; Flooded: 14.6V; Duration: 2 hours |
| Absorption charging voltage (12V system) | Maintenance-free lead-acid: 14.4V; GEL: No; Flooded: 14.8V; Duration: 2 hours |
| Float charging voltage (12V system) | Maintenance-free lead-acid / GEL / Flooded: 13.8V |
| LVR (12V system) | Maintenance-free lead-acid / GEL / Flooded: 12.6V |
| LVD (12V system) | Maintenance-free lead-acid / GEL / Flooded: 10.8V |
| HVD | Lead-acid battery 16V |
| Static loss | ≤50mA |
| Light control voltage | 5V/10A |
| Discharge loop voltage drop | ≤0.2V |
| LCD temperature | -20°C~+70°C |
| Operating temperature | -20°C~+55°C |
| Storage temperature | -30°C~+80°C |
| Working humidity | ≤90%, no condensation |
| Grounded type | Positive grounded |
| Aperture for installation | Φ5mm |
Note: Above parameters are in a 12V system at 25°C; values are twice in a 24V system.
Connection Notes
- Connect battery.
- Connect load.
- Connect PV array.
- Controller powers on after connection.
- Battery terminal should be installed with insulation, and the installation distance should not exceed 50mm.
- This MPPT series is common positive: controller, PV array, battery, and load positive poles can be grounded at the same time.
- If an inverter or other high starting-current equipment is used, connect the inverter directly to the battery (do not connect it to the controller’s load terminal).
Applications
- Charger controller, voltage controller, lighting controller
- Solar system controller, solar working station
For setup or compatibility questions, contact service@tsolar.top or visit https://tsolar.top/.
Details
