Bluetooth Solar Charging Controller, Brand Name : OLYS

model: mppt5020-bt,mppt5040-bt

system voltage：12v/24v auto recognition

max. Charge current: 20a / 40a

max. Load current:   20a / 40a
charge technology  ：mppt

display:  meter + app
battery type：gel, lead-acid, agm2, lifepo4

application ：

1.for solar home system

2.self-contained solar systems

3.for off-grid solar system

function

1. Increased mpp charging current compared with conventional controllers, due to ultramodern controller technology(microprocessor) by 10 % to 30 % (efficiency > 95 %)
2. Switchable characteristic lines of charging for optimum charging of gel/ dry fit / agm/fleece or acid/lead-acid, as well as lifepo4 batteries .
3. Load output function with short circuit, overload protection  function.
4. Bluetooth function, phone app display controller parameters( only mppt5020-bt, mppt5040-bt)
4. Unattended charging: standard protection against overload, overheating, reverse battery and back discharge of the battery (in case of insufficient solar power, such as at twilight, at night etc.).
5. Overcharge protection: reduction of the charging current of the battery in case of excessive solar power and full battery. Immediate recharging in case of power consumption to ensure always the best possible charging state of the battery.
6. Connection for temperature sensor automatic adaptation of the charging voltage to the battery temperature. In case of low outside temperatures, full charging of the weaker battery is improved, and in case of summery temperatures unnecessary battery gassing will be avoided. This is highly recommended, if the battery is exposed to strong variations in temperature, such as in the motor compartment.