Victron energy MPPT 150/35 Manual Del Usuario página 12

The MPPT Solar Chargers will also end absorption and switch to
float when the battery current drops below a low current threshold
limit, the 'tail current'.
The default tail current value value is 2A.
The default settings (voltages, absorption time multiplier and tail
current) can be modified with the Victronconnect app via
Bluetooth or via VE.Direct.
There are two exceptions to normal operation:
1. When used in an ESS system; the solar charger algorithm is
disabled; and instead it follows the curve as mandated by the
inverter/charger.
2. For CAN-bus Lithium batteries, like BYD, the battery tells the
system, including the solar charger, what charge voltage to
use. This Charge Voltage Limit (CVL) is for some batteries
even dynamic; changes over time; based on for example
maximum cell voltage in the pack and other parameters.
When, in case of the above-mentioned exceptions, several Solar
Chargers are connected to a GX device, these chargers will
automatically be synchronised.
Variations to expected behaviour
1. Pausing of the absorption time counter
The absorption time counter starts when the configured
absorption voltage is reached and pauses when the output
voltage is below the configured absorption voltage.
An example of when this voltage drop could occur is when PV
power (due to clouds, trees, bridges) is insufficient to charge
the battery and to power the loads.
When the absorption timer is paused, the absorption LED will
flash very slowly.
2. Restarting the charge process
The charging algorithm will reset if charging has stopped (i.e.
the absorption time has paused) for an hour. This may occur
when the PV voltage drops below the battery voltage due to
bad weather, shade or similar.
3. Battery being charged or discharged before solar charging
begins
The automatic absorption time is based on the start-up battery
10