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4.
Operation
4.1.1.
Configuring Charge Controller & Inverter Voltage Set-points
It is very important that your battery charger (solar, inverter or AC) is set to stop charging at a
maximum voltage and your inverter should be set to shut down at a certain voltage according to the
table below.
Inverter and Charge Controller Set Points
12V System
24V System
48V System
Inverter
Low Voltage Disconnect
12.0V
24.0V
48.0V
Charge Controller
Bulk/Absorption Voltage
<40A Chargers
14.1V
28.2V
56.4V
40-60A Chargers
14.0V
28.0V
56.0V
60-150A Chargers
13.9V
27.8V
55.6V
Charge Controller
Float Voltage*
<40A Chargers
13.8V
27.6V
55.2V
40-60A Chargers
13.8V
27.6V
55.2V
60-150A Chargers
13.8V
27.6V
55.2V
* At full charge rate of 150A we recommend allowing the Absorb charge to last 2 minutes or
less to avoid overcharging the batteries. 40-60A chargers are recommended to allow the
bulk/absorption charge to last 4 minutes or less, while chargers under 40A should use 6
minutes or less. When the batteries are being overcharged the BMS will turn the battery off,
making the battery effectively an open circuit in your battery bank.
4.1.2.
Disable Equalization
Caution:
Disable charge equalizing to prevent damage to your system.
Equalization mode in your charge controller absolutely must be turned off/disabled or the batteries
will be permanently damaged. Equalization charge mode is applicable to flooded lead acid batteries.
An indication that equalization was left on is that the battery will show a high voltage (HV) event in the
Bluetooth App.
