Victron energy SmartSolar MPPT 150/70-Tr VE.Can Manuel page 4

Optional external voltage and temperature sensor
(range -20°C to 50°C)
The Smart Battery Sense is a wireless battery voltage-and-temperature
sensor for Victron MPPT Solar Chargers. The Solar Charger uses these
measurements to optimize its charge parameters. The accuracy of the data it
transmits will improve battery charging efficiency, and prolong battery life
Alternatively, Bluetooth communication can be set up between a BMV-712
battery monitor with battery temperature sensor and the solar charge
controller
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Automatic battery voltage recognition
The controllers will automatically adjust to a 12V, 24V or a 48V system one
time only. If a different system voltage is required at a later stage, it must be
changed manually, for example with the Bluetooth app or the optionel LCD
display. Similarly, manual setting is required in case of 36V system.
Flexible charge algorithm
Fully programmable charge algorithm, and eight preprogrammed algorithms,
selectable with a rotary switch.
Adaptive three step charging
The SmartSolar MPPT Charge Controller is configured for a three step
charging process: Bulk – Absorption – Float.
A regular equalization charge can also be programmed: see section 3.12 of
this manual.
Bulk
During this stage the controller delivers as much charge current as possible
to rapidly recharge the batteries.
Absorption
When the battery voltage reaches the absorption voltage setting, the
controller switches to constant voltage mode.
When only shallow discharges occur the absorption time is kept short in
order to prevent overcharging of the battery. After a deep discharge the
absorption time is automatically increased to make sure that the battery is
completely recharged. Additionally, the absorption period is also ended when
the charge current decreases to less than 2A.
Float
During this stage, float voltage is applied to the battery to maintain it in a fully
charged state.
Equalization
See section 3.12
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