MPPT Charge Controller Configuration

Equalization Voltage Set Point (V)

In a closed-loop system, the BMS disables this property.

A Lithium battery should never be equalized.

Equalize Support (Yes/No)

Bulk/Boost Voltage Set Point (V)

In a closed-loop system, the BMS disables this property.

Float Voltage Set Point (V)

Recharge Voltage (V)

When the Charge Cycle is set to 3-Stage, ReCharge Voltage will be Disabled (Ignore any value displayed).

Absorption Voltage Set Point (V)

In a closed-loop system, the BMS programs this property.

Absorption Time (Minutes)

Charge Cycle (3 Stage, 2 Stage)

Set to 3-stage to provide current for base loads.

Maximum Charge Rate (%)

Default: 100%

If required, use this setting to de-rate the charger output of each device in the system. This is not a system-wide setting.

The maximum charging current delivered by the entire system should not exceed the maximum charge current rating of the entire battery system.

Equalize Now (Enabled/Disabled)

In a closed-loop system, the BMS disables this property.

Default Battery Temperature (Hot, Warm, Cold)

Default: Warm.

When operating in a closed loop, the BMS communicates the internal battery temperature.

If closed-loop communication fails, the MPPT Solar Charge Controllers continue to operate in the state they were in before communication was lost.

Battery Type (Flooded, GEL, AGM, Custom)

Set to Custom.

Nominal Battery Voltage (24 V / 48 V)

Set to 48 V.

Battery Bank Capacity (Ah)

Set to the number of batteries in the system multiplied by the Discover Lithium battery's rated capacity.

• HELIOS ESS: 314 A × number of batteries

Battery Temperature Coefficient (mV/°C)

Recommended: 0 mV/°C.

In a closed-loop system, the BMS communicates the battery voltage based on the internal battery temperature.