Solar MPPT Controller Lumiax MT4010-BT, 12-24V/40A, Bluetooth

Product detailed description

The MPPT controller uses an internal converter to adjust the V-A characteristic of the current source - solar panel - so that it is optimal for battery charging. It can thus use the energy from solar panels much better than a PWM controller, which regulates charging only by pulse limitation of the direct connection between the solar panel and the battery, where the pulse width is proportional to the state of the battery being charged. In other words, the MPPT controller can generate the ideal voltage and current for charging the battery from a higher voltage and lower current of the source. For example, from 30V and 5A it will generate approx. 15V and 10A. The conversion efficiency of the V-A characteristic is usually above 95%, so the losses are minimal, and the controllers can generally be adapted to various types of batteries so that charging is as optimal as possible.
Technical parameters:
- system voltage 12–24V, usable batteries: Pb AGM, Pb AGM GEL, Pb liquid, LiFePO4
- max. power of PV panels: 520W (1040W-24V) for maximum utilization of the controller. When using more powerful panels, the full power will not be utilized, but the controller's function will remain intact without damage.
- max. PV panel voltage: 100V (-20°C), 90V (+25°C)
- max. charging current: 40A
- self-consumption: <8mA (12V), <12mA (24V)
- 4-stage charging of Pb battery (CC, CV – boost, CV – float, CV-equalize)
- CC = charging at full power of PV panels up to the set end-of-charge value (CV-boost)
- CV-boost = charging for 1–2 hours after reaching a terminal voltage of 14–15V (adjustable)
- CV-equalize = charging with increased voltage to mix the liquid electrolyte - optional only for batteries with liquid electrolyte
- CV-float = charging with maintenance voltage of 13.5–13.8V (adjustable)
- battery type selection: Liquid electrolyte, AGM, AGM GEL, LiFePO4
- LCD display for setting and monitoring operating parameters
- temperature compensation: -4.17mV/K per cell during boost+equal charging, -3.33mV/K per cell during float charging (maintenance)
- protection rating IP32
- RS485 interface
- operating temperature: –25°C~55°C
- dimensions: 189×255×69mm/1.8kg
Note: for correct pairing via Bluetooth, the battery must be charged to at least 12.5V. Solar Life (skywise) application.