Victron energy MultiPlus 12 500 20 Manuel page 5

Preventing damage due to excessive gassing: the BatterySafe mode
If, in order to quickly charge a battery, a high charge current in combination with a high
absorption voltage has been chosen, damage due to excessive gassing will be prevented
by automatically limiting the rate of voltage increase once the gassing voltage has been
reached.
Less maintenance and aging when the battery is not in use: the Storage mode
The Storage mode kicks in whenever the battery has not been subjected to discharge
during 24 hours. In the Storage mode float voltage is reduced to 2,2V/cell (13,2V for 12V
battery) to minimise gassing and corrosion of the positive plates. Once a week the voltage
is raised back to the absorption level to 'equalize' the battery. This feature prevents
stratification of the electrolyte and sulphation, a major cause of early battery failure.
Two DC outputs for charging two batteries
The main DC terminal can supply the full output current. The second output, intended for
charging a starter battery, is limited to 1 A and has a slightly lower output voltage.
Increasing service life of the battery: temperature compensation
The temperature sensor (supplied with the product) serves to reduce charging voltage
when battery temperature rises. This is particularly important for maintenance-free
batteries, which could otherwise dry out by overcharging.
More on batteries and charging
Our book 'Energy Unlimited' offers further information on batteries and battery charging,
and is available free of charge on our website (see www.victronenergy.com  Support &
Downloads'  General Technical Information). For more information on adaptive charging,
please also refer to the General Technical Information on our website.
2.3 Self consumption – solar energy storage systems
When the Multi is used in a configuration in which it will feed back energy to the grid it is
required to enable grid code compliance by selecting the grid code country setting with the
VEConfigure tool.
Once set, a password will be required to disable grid code compliance or change grid code
related parameters.
If the local grid code is not supported by the Multi an external certified interface device should
be used to connect the Multi to the grid.
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