Solar controller MPPT Lumiax MT1550EULi, 12V/15A for lithium batteries

Product detailed description

MPPT controller 15A for LiFePO4 batteries with system voltage 12V and for PV panels with max. power 200W with max. input voltage 35V and min. input voltage 15,8V. It is primarily designed for panels with a system voltage of 12V, generating 16-18V at maximum load.

Brief description of MPPT controllers:
The MPPT controllers adjust the current source-solar panel characteristic using an internal V-A converter to be optimal for battery charging. Thus, they can harness the energy from the solar panels better than PWM controllers, which regulate charging only by pulse limiting the direct connection between the solar panel and the battery, where the width of the pulse is proportional to the state of the battery being charged. In other words, the MPPT controller can generate the ideal voltage and current to charge the battery from a higher voltage and lower current source. For example, 18V/5A converts to 14.5V/6.2A. The conversion efficiency of the V-A characteristic tends to be above 95%, so the losses are minimal and the regulators can usually be adapted to different types of batteries to provide the most optimal charging.


Technical parameters:

- system voltage: 12V
- for LiFePO4 batteries with nominal voltage 12,8V
- max. power of PV panels: 200W for maximum use of the controller. When using a more powerful panel, the full power will not be used, but the function of the controller will be preserved without damage.
- max. output voltage of PV panel: 35V
- min.output voltage of PV panel: 15,8V - verified by own measurement
- max. charging current: 15A
- self-consumption: 7mA
- 3 stage battery charging (CC, CV - boost, CV - float)
- CC = charging with full power of PV panels until the set value of the end of charging (CV-boost)
- CV-boost = charging for 1-2h after reaching the clamp voltage of 15V
- CV-float = charging with 13.8V holding voltage
- not suitable for lead acid batteries
- load disconnection at battery voltage 11-12V - adjustable
- LCD display for setting and monitoring operating parameters
- 2× USB interface
- temperature compensation: -4.17mV/K per cell during boost+equal -3.33mV/K per cell during float (maintenance) charging
- modbus protocol based on RS-485 interface maximizing communication possibilities.
- iP32 protection
- operating temperature: -25°C~55°C
- dimensions: 189×96×53mm/0.42kg