Overview
The POWLSOJX MPPT solar charge controller is designed to track the PV array maximum power point quickly in different environments to improve solar energy utilization for solar systems such as home power supply, communication base stations, traffic lights, solar street lamps, and courtyard lamp systems. Models include SA4860A (60A), SA4880A (80A), and SA48100A (100A), with 12V/24V/36V/48V automatic voltage recognition, LCD status display, and dual USB ports.
Key Features
- MPPT maximum power point tracking technology; tracking efficiency stated as no less than 99.5%
- LCD dynamically displays operation data and working status; backlight display
- Compatible battery types: Seal, GEL, Flooded, LiFePO4 (battery charging)
- Dual USB 5V charging ports
- Protections listed: over-voltage protection, over-current protection, over temperature protection
- 7 kinds of working mode selection; controller parameters display (working mode, battery voltage, PV charging current, battery discharging current, product working temperature, delay time)
- Some controller parameters can be modified by the user to set and save
- Appearance characteristics (SA48100A parameter table): blue plastic shell + aluminum heat sink; aluminium alloy heat dissipation
For installation or parameter-setting support, contact service@tsolar.top or visit https://tsolar.top/.
Specifications
| Brand | POWLSOJX | ||
| Certification | CE, FCC | ||
| Origin | Mainland China | ||
| High-concerned chemical | None | ||
| Application | Charger Controller; Voltage Controller; Solar System Controller; Solar Working Station | ||
| Models | SA4860A | SA4880A | SA48100A |
| Voltage auto recognition | 12V/24V/36V/48V AUTO | ||
| Maximum charging current | 60A | 80A | 100A |
| Maximum current (listed) | 100A | ||
| Maximum load current (SA48100A parameter table) | 100A +10% (SA48100A) | ||
| Solar panel maximum input voltage (SA48100A parameter table) | ≤ 100V | ||
| Maximum PV input (12V battery) | Solar panel max 720W; Voc: 15-24V (12V battery) | ||
| Maximum PV input (24V battery) | Solar panel max 1440W; Voc: 30-48V (24V battery) | Solar panel max 1920W; Voc: 30-48V (24V battery) | Solar panel max 2400W; Voc: 30-48V (24V battery) |
| Maximum PV input (36V battery) | Solar panel max 2160W; Voc: 45-72V (36V battery) | Solar panel max 2880W; Voc: 45-72V (36V battery) | Solar panel max 3600W; Voc: 45-72V (36V battery) |
| Maximum PV input (48V battery) | Solar panel max 2880W; Voc: 60-100V (48V battery) | Solar panel max 3840W; Voc: 60-100V (48V battery) | Solar panel max 4800W; Voc: 60-100V (48V battery) |
| Low voltage shutoff (solar) | 12V: 9.5V (adjustable); 24V: 19V (adjustable); 36V: 28.5V (adjustable); 48V: 38V (adjustable) | ||
| Battery float charge voltage | 12V: default 14.2V (adjustable); 24V: default 28.4V (adjustable); 36V: default 42.6V (adjustable); 48V: default 56.8V (adjustable) | ||
| Light control mode | Load off during the day, load on at night | ||
| Timing mode | Load on/off timing | ||
| Light control + timing mode | Load off during the day, load on at night + timing | ||
| Manual mode | Manual load switch | ||
| USB output | USB output voltage: 5V (one sheet lists "5A"); USB output current: 2A | ||
| Discharge overcurrent protection | Delayed protection if above 5% of max discharge current; immediate protection above 10% (SA48100A parameter table) | ||
| Charging overcurrent protection | Delayed protection if above 5% of max charge current; immediate protection above 10% (SA48100A parameter table) | ||
| Overtemperature protection | MOS temperature protection at 85°C (also listed as MOS tube temperature higher than 85° protection) | ||
| Package size | 20.4*20.7.3cm | ||
| Weight | 0.81kg | 0.87kg | 0.94kg |
Working Modes
- Charging mode: in any case, never discharge
- Light control mode: when nights are detected, delay 10 minutes then start to discharge; when daytime is detected, delay 10 minutes then stop discharging
- Light and time delay control mode: when nights are detected, delay 10 minutes then start to discharge and count down; when timer reaches zero, discharge stops; longest duration 23:59
- Universal control mode: under trouble-free condition, always keep discharging
- Manual control mode: uses “▼” for discharging or not
- Timing control mode: opens or closes the discharge regularly
- Test mode: same as light and time delay control mode but without the 10-minute time delay
- Low voltage protection note: the controller can still discharge under low voltage protection by touch-holding “▼” for 5 seconds; discharge is only stopped by hand (warning provided: this may damage the battery)
Wiring, Setup & Precautions
- Connection order note: the battery must be connected first.
- Wiring order statement: connect to the battery first, then connect the PV plate, then connect the DC load.
- Battery voltage thresholds for correct identification (first wiring ensures): 12V battery > 10V; 24V battery > 20V; 36V battery > 30V; 48V battery > 42V.
- Solar panel voltage ranges stated in purchase instructions: charge 12V battery with 15-23V solar panel; 24V battery with 30-46V solar panel; 36V battery with 45-66V solar panel; 48V battery with 60-90V solar panel.
- Warning stated: do not charge 12V batteries with 24V/36V/48V solar panels; if the pressure difference is too large, the controller may be damaged by overheating.
- Installation notes stated: install as close to the battery as possible to avoid voltage drop caused by long wires; install on a flat, well-ventilated surface because heat is generated during operation.
- Charging source note stated: only use the photovoltaic board as the charging source; do not use DC or other power supply as the charging source.
- Battery note stated: suitable for lithium batteries and various lead-acid batteries (including openings, seals, colloids, etc.); lithium batteries require manual adjustment of overcharging voltage; do not use other batteries (nickel-metal hydride batteries, etc.).
Troubleshooting
| Malfunction phenomenon | May cause | Troubleshooting method |
| Sunshine is sufficient but not charging | Photovoltaic board open circuit or reverse connection | Re-link good photovoltaic panels |
| The load logo does not light up | Mode setting error | Re-set |
| The load logo does not light up | The battery voltage is too low | Recharge |
| Load mark flashes slowly | Load overcurrent | Reduce load power |
| Load logo flashes quickly | Short circuit protection | Remove short circuit, automatically recover |
| The controller does not light up | The battery voltage is too low / reverse connection | Replace the battery / check reverse connection |
Applications
- Home power supply systems and daily solar energy management
- Power supply for home emergency equipment
- Solar street lights and courtyard lamp systems
- Traffic lights
- Communication base stations
Details
Specs for the SA48100A model are summarized for quick setup, including system voltage recognition and PV input limits.
Follow the wiring order and match panel voltage to battery voltage (12/24/36/48V) to help prevent overheating or damage.
Common fault symptoms and reset/recharge steps are listed alongside basic installation precautions.
Clear terminal labeling helps connect solar panel, battery, and DC load correctly, with dual 5V USB ports for small devices.
The LCD interface highlights PV charging, battery status, and load output at a glance, with multiple working modes available.
