Solar Victron SmartSolar MPPT 100/20 48 Volt, with Bluetooth

The wireless solution for setup, monitoring, and updating the controller using Apple and Android smartphones, tablets, or other devices.

For a wired data connection to a Color Control panel, PC, or other devices.

Especially under cloudy skies, when light intensity constantly changes, a fast MPPT algorithm improves energy yield by up to 30% compared to PWM charge controllers and up to 10% compared to slower MPPT controllers.

Overcharging of the battery can be prevented by connecting all loads to the load output. The load output disconnects the loads when the battery reaches a predefined voltage. Alternatively, an intelligent battery management algorithm can be used: see BatteryLife.

The load output is short-circuit proof. Some high inrush current loads are best connected directly to the battery. If a remotely controlled on/off input is available, these loads can be controlled by connecting the controller’s load output to that input. In some cases, a special interface cable is required (see chapter 3.7). Alternatively, a BatteryProtect device can be used to control the loads. Technical details are available on our website.

If the solar charge controller cannot fully charge the battery in a day, the battery status constantly alternates between "partially charged" and "end of discharge." This operating mode can damage a lead-acid battery within weeks or months.

The BatteryLife algorithm monitors the battery charge level and gradually adjusts the load disconnect threshold each day until the battery reaches nearly 100%. After that, the threshold is modulated so that a full charge cycle is achieved about once per week.

Adjusts constant voltage and float charge voltages according to temperature.

The controller automatically detects 12V or 24V systems only once. If a different system voltage is required later, it must be manually changed, e.g., via the Bluetooth app (see section 1.9).

The controller is configured for a three-stage charging process: Bulk → Absorption → Float (see sections 3.8 and 5 for default settings).

• 1.8.1 Bulk: Constant current phase – the controller delivers maximum current to charge the batteries quickly.
• 1.8.2 Absorption: Constant voltage phase – when the battery reaches the target voltage, the controller switches to constant voltage mode. Minor discharges shorten this phase to prevent overcharging. After deep discharge, the phase is extended until the battery is fully charged. The phase ends when the charging current drops below 1 A.
• 1.8.3 Float: Maintenance mode – keeps the battery at float voltage. If the battery voltage falls below float for at least one minute, a new charging cycle is triggered.
• 1.8.4 Equalization: See section 3.8.1.

• Built-in Bluetooth Smart: Connects to smartphones or tablets (iOS/Android).
• VE.Direct to USB cable (ASS030530000): Connect to PC, Android smartphone, or USB On-The-Go (additional USB OTG cable required).
• VE.Direct to VE.Direct cable: Connect to MPPT Control or Color Control panel.

Multiple parameters can be customized via the VictronConnect app. The app is available for download on the Victron website.