Full Product Manual

6
Four Charging Stages
The Rover MPPT charge controller has a 4-stage battery charging algorithm for a rapid,
efficient, and safe battery charging. They include: Bulk Charge, Boost Charge, Float
Charge, and Equalization*.
Bulk Charge: This algorithm is used for day to day charging. It uses 100% of available
solar power to recharge the battery and is equivalent to constant current. In this stage the
battery voltage has not yet reached constant voltage (Equalize or Boost), the controller
operates in constant current mode, delivering its maximum current to the batteries (MPPT
Charging)
Constant Charging: When the battery reaches the constant voltage set point, the
controller will start to operate in constant charging mode, where it is no longer MPPT
charging. The current will drop gradually. This has two stages, equalize and boost and
they are not carried out constantly in a full charge process to avoid too much gas
precipitation or overheating of the battery.
➢ Boost Charge: Boost stage maintains a charge for 2 hours by default. The user
can adjust the constant time and preset value of boost per their demand.
Float Charge: After the constant voltage stage, the controller will reduce the battery
voltage to a float voltage set point. Once the battery is fully charged, there will be no more
chemical reactions and all the charge current would turn into heat or gas. Because of this,