MPPT solar charger manual

2. Introduction

In this section:

The Victron Energy SmartSolar charge controller is an ultra fast Maximum Power Point Tracking (MPPT) solar charger with an outstanding conversion efficiency and is suitable for a wide range of battery and PV voltages.

2.1. Battery voltage, PV voltage and current rating

The solar charger can charge a lower nominal-voltage battery from a higher nominal voltage PV array. The controller will automatically adjust to the battery voltage and will charge the battery with a current up to its rated current.

The product name of the solar charger incorporates the maximum PV voltage and the maximum battery charge current.

For example: A 150/70 model has a maximum PV voltage of 150V and can charge the battery with a maximum of 70A.

The table below indicates the maximum PV voltage and maximum battery charge current of the solar chargers that are covered by this manual:

Solar charger model

Maximum PV voltage

Maximum battery charge current

Suitable battery voltages

MPPT 150/70

150V

70A

12, 24, 36 and 48V

MPPT 150/85

150V

85A

12, 24, 36 and 48V

MPPT 150/100

150V

100A

12, 24, 36 and 48V

MPPT 250/70

250V

70A

12, 24, 36 and 48V

MPPT 250/85

250V

85A

12, 24, 36 and 48V

MPPT 250/100

250V

100A

12, 24, 36 and 48V

2.2. TR or MC4 model

The solar charger is available in two different models, namely:

  • The TR version - The PV terminals are screw terminals

  • The MC4 version - The PV terminals are MC4 terminals

The 70A MC4 model has 2 MC4 male and female connector pairs.

The 85A and 100A MC4 models have 3 MC4 male and female connector pairs.

MPPT_TR_and_MC4.svg

From left to right: Example of solar chargers with screw terminals and MC4 PV connections