Ingredient
Solar charge controller (MPPT)
Also known as: MPPT controller, solar charger, Victron SmartSolar, Renogy Rover
Power-electronics device that takes raw PV-panel output (variable voltage, variable current with sun) and produces a regulated battery-charging current — modern controllers use Maximum Power Point Tracking (MPPT) algorithms to extract 15–30% more energy than older PWM controllers. The right ingredient at the front of any off-grid farm-electronics deployment: solar-powered field sensor stations, autonomous rovers with rooftop panels, remote pumps. Sized by PV-array wattage and battery-bank voltage. Hobbyist 12V/20A units ~$50; serious Victron SmartSolar (with Bluetooth telemetry) $150–500.
Inputs / outputs
- Input: PV array, typical voltage 18–150V depending on controller class
- Output: regulated battery charging current; voltage matches battery (12V, 24V, 36V, 48V system)
- Telemetry: VE.Direct (Victron), Modbus, or proprietary serial — exposes panel voltage, current, battery voltage, charge state
- Efficiency: 95–99% on modern MPPT
- Power: small models 100W–400W; commercial 1–10 kW
Solves / unlocks
- [[off-grid-living|Off-grid]] sensor station that runs years on one solar panel + battery
- Autonomous rover that’s energy-positive on most solar days
- Remote irrigation pump powered entirely by sun
- Solar-powered greenhouse environmental control
- [[off-grid-living|Off-grid]] [[lorawan|LoRaWAN]] gateway
Constraints
- Match panel voltage to controller spec — exceeding open-circuit voltage destroys the controller.
- Battery type configuration matters — wrong setting (lead-acid vs LiFePO₄ profile) shortens battery life or causes safety issues.
- MPPT vs PWM — for any battery >50W panel, MPPT pays back the cost difference quickly.
- Heat — controllers derate above 40°C ambient; mount in shade and ventilation.
Source
- Victron SmartSolar: https://www.victronenergy.com/solar-charge-controllers
- Renogy Rover: https://www.renogy.com/charge-controllers/
- Open-firmware OpenInverter (advanced): https://openinverter.org/
See also
Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.
- Member of: [[ingredient]]
- Combines with: [[lithium-bms]] · [[esp32]] · [[acorn-rover]] · [[home-assistant]]
What links here, and how
Inbound connections from across the wiki, grouped by lens and by relationship. These appear automatically — every entity page declares what it links to, and that data populates here on the targets.
Practical
contains
- Farm-tech toolkit power / MPPT solar charge controller for off-grid systems
combines with
- Lithium BMS (LiFePO₄ battery management) controller charges the battery; BMS protects from over/under voltage and balances cells
combines
- Recipe: autonomous row-crop weeder rooftop-panel charging keeps the rover energy-positive on most days
- Recipe: off-grid soil-moisture mesh 10W panel per node keeps the battery topped up indefinitely
- Recipe: orchard disease-prediction station small panel + battery for indefinite deployment
- Recipe: livestock & equipment tracking mesh small flexible solar panel on each collar/tracker
6 inbound links · 5 outbound