Can the RICH SOLAR 40 Amp charge a lithium battery bank fast enough for daily van cycling?

That matters for an MPPT solar charge controller buyer because the controller can harvest from panels efficiently, but the battery still only receives up to its rated charging current. The listing also states 100 VDC max PV input, 12V/24V automatic detection, Bluetooth, LCD, remote meter support, and temperature compensation. A LiFePO4 battery is a lithium iron phosphate bank, and this controller is listed as compatible with lithium deep cycle batteries. The charging profile details for bulk, absorption, float, and equalization are not stated, so you should confirm those settings for your own lithium bank before ordering. For a van build with a rooftop PV array, that makes the controller’s current cap the first thing to check.

You can find the technical specifications in our detailed RICH SOLAR 40 Amp analysis.

What to Check Before Buying the RICH SOLAR 40 Amp MPPT Controller

• Check your battery bank’s daily recharge target. If your van needs more than 40A of charge current, this controller is likely too small.
• Measure the PV array’s open-circuit voltage. The controller accepts up to 100 VDC, so your series string must stay within that limit.
• Confirm your battery chemistry and charging profile needs. The listing names lithium compatibility, but it does not state the full LiFePO4 bulk, absorption, float, and equalization profile.
• Measure the cable run between panels and controller. Voltage drop matters here, because thin wire can waste the current the controller is trying to deliver.
• Check whether you want Bluetooth monitoring or a remote meter. This model supports both, which helps if you want charge data without opening the cabinet.

Where the RICH SOLAR 40 Amp MPPT Controller Fits Among Solar Charge Controllers

This controller suits buyers who need a 40A MPPT unit for a 12V or 24V van or RV battery bank and want Bluetooth plus LCD monitoring. It is less attractive if your system needs higher charging current, a larger PV input margin, or fully specified lithium charging stages. A weekend RV fridge, lights, and phone charging setup fits this class well; a heavier daily cycling schedule may call for a larger controller type. The 4.3 average across 571 ratings adds useful buyer context, and the price sits around $119.99.

If you are still deciding on hardware, see our guide to the best mppt solar charge controller for van life.

RICH SOLAR 40 Amp suits modest van solar systems

Choose this controller if your lithium bank can live with 40A charging and your array stays under 100 VDC. If you want a compact MPPT unit for modest van or RV solar, the RICH SOLAR 40 Amp is a sensible fit. If your daily cycling loads demand faster recovery, look higher in current rating instead.

Comparing multiple options is helpful, so view our top mppt solar charge controller for lithium batteries.

Reviewed by the Predicament Measures editorial team.