Battery Charge Algorithm Settings - Victron energy SUN Manual

This setting uses factory pre-defined presets for a large variety of battery types. These pre-defined charge algorithms are suitable
for almost all installations.
It is possible to also create user-defined battery presets. The chapter
These user-defined presets are stored in the VictronConnect app library. This is helpful in case multiple solar chargers need to be
configured, eliminating the need to define the entire charge algorithm each time a new solar charger is configured.
Expert mode
This setting enables or disables expert mode. It is by default set to "disabled".
The default charge algorithms work well for almost all installations. Only enable expert settings if your
equipment has special requirements.
When this setting is enabled the following parameters can be configured:
• Charger voltages: bulk, absorption and float
• Bulk: re-bulk voltage offset
• Absorption: duration, time and tail current
• Equalization: current, interval, stop mode and duration
• Temperature voltage compensation
• Low temperature cut off
For the meaning of these parameters see chapter
Equalization
Equalization can cause damage to the battery if the battery is not suitable for an equalization charge. Always
check with the battery manufacturer prior to enabling equalization.
This setting can be used to disable or enable automatic equalization. When enabled, the number of days can be selected when
equalization should repeat.
A manual equalization can be initiated by pressing the "START NOW" button. Use the manual equalize option only during
absorption and float charge stages, and when there is sufficient sunlight. The current and voltage limits are identical to the
automatic equalize function. The manual equalization stage lasts 1 hour and can be stopped at any time by the Stop Equalize.
The equalization setting might not be active, this can be the case if the battery preset does not support an
equalization charge which is the case with lithium batteries.

4.4.1. Battery charge algorithm settings

This chapter explains all parameters that are used in "Expert" mode and the settings that are used when programming a custom
battery type via the battery preset menu.
Page 13
SUN Inverter Manual
Customize battery charge algorithm
Battery charge algorithm settings [13]
explains how to do this.
Configuration