Victron energy MPPT 150/45-Tr Manuel page 4

1.7 Flexible charge algorithm
Fully programmable charge algorithm, and eight preprogrammed
algorithms, selectable with a rotary switch.
1.8 Adaptive three step charging
The BlueSolar MPPT Charge Controller is configured for a three
step charging process: Bulk – Absorption – Float.
A regular equalization charge can also be programmed: see
section 3.8 of this manual.
1.8.1. Bulk
During this stage the controller delivers as much charge current
as possible to rapidly recharge the batteries.
1.8.2. 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.
1.8.3. Float
During this stage, float voltage is applied to the battery to
maintain it in a fully charged state.
1.8.4. Equalization
See section 3.8
1.9 Remote on-off
VE.Direct non inverting remote on-off cable (ASS030550300)
needed. An input HIGH (Vi > 8V) will switch the controller on, and
an input LOW (V < 2V, or free floating) will switch the controller
off.
Application example: on/off control by a VE.Bus BMS when
charging Li-ion batteries.
2