SQ-M350B-SDPotted Controllers
MPPT Boost Mains-Complementary Bluetooth
MPPT mains-complementary Bluetooth controller — 20A charging, 50W output, 60W mains direct-supply; switches to mains at low battery, suits 80W PV panels.
Product Features
- Industrial-grade MCU all-digital technology — no trim resistors, strong anti-interference, no aging or drift
- Designed for single-cell LiFePO4 battery systems — no battery protection board needed, cells in parallel, high capacity utilization, lower PACK cost
- Synchronous rectification topology: MPPT tracking efficiency ≥99%, charging conversion efficiency up to 95%, output conversion efficiency up to 92%
- Mains direct-supply mode — mains kicks in automatically when battery voltage drops below the configurable threshold (default 3V)
- 12V mains supplement input, mains power configurable via mini-program; built-in coulomb counter with AI algorithm ensures runtime on cloudy/rainy days
- IP65-rated design with aluminum housing, low temperature rise, reliable in harsh environments
- Bluetooth & IR communication, OTA upgrade, radar / IoT module interface; discharge curve configurable via WeChat mini-program or engineering remote (8 time segments + dawn boost)
- Complete protection: overcharge, over-discharge (current-limited), battery reverse-polarity, PV reverse-polarity, PV short-circuit, LED open/short-circuit, over-temperature
Technical Specifications
| Electrical | Electrical | ||||
|---|---|---|---|---|---|
| Max charging current | 20A | Standby consumption | |||
| Standby consumption | 10–20µA | ||||
| Battery type | LiFePO4 | System voltage | |||
| System voltage | 3.2V | ||||
| Max PV panel power | 80W | Charging method | |||
| Charging method | MPPT | ||||
| Discharge method | Boost, constant current & power | Output voltage | |||
| Output voltage | 20–36V (adaptive) | ||||
| PV voltage | 9–25V (18V recommended) | Max output power | |||
| Max output power | 50W | ||||
| Discharge cutoff voltage | 2.6V | Overcharge protection voltage | |||
| Overcharge protection voltage | 3.6V | ||||
| Mains supplement input | 12V | Max mains power | |||
| Max mains power | 60W | ||||
| Protection & Environment | Protection & Environment | ||||
| Protection rating | IP65 | Operating temperature | |||
| Operating temperature | -40°C to 80°C | ||||
| Mechanical & Others | Mechanical & Others | ||||
| Dimensions | 91.5×90.5×29 mm | Weight | |||
| Weight | ≈0.364 kg | ||||
Not sure which model fits?
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