Name: Morningstar ProStar MPPT 40
Brand: Morningstar
Price: 538.00 USD

For boats and remote installs where reliability matters more than price or app features. Most RV owners will get more for their money elsewhere.

Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Conformal-coated board and marine-rated terminals suit damp boats and remote sites
Five-year warranty from a maker known for low failure rates
Load output with lighting timer can run DC lights directly
Logs 256 days of charging data

Cons

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Charging
Model number	PS-MPPT-40
Type	MPPT solar charge controller
Charge current	40 A
Battery voltage	12/24 V
Custom profile	Yes
Temperature sensor	Optional extra
Peak efficiency	98%
Inputs
Max PV voltage (Voc)	120 V
Max PV power (12 V)	550 W
Monitoring and build
Bluetooth	No
Display	No
Load output	Yes
Parallel units	Yes
Cooling	passive (aluminum heatsink)
Water resistance	IP20
Dimensions	20 x 17 x 7 cm (7.9 x 6.7 x 2.8 in)
Weight	3.1 lb
Warranty	5 years

A rugged 60 A controller for larger 24 V or 48 V cabin and RV arrays. The Rover Lite 60A costs much less if you don’t need the load output.

$359.99

The cheapest way into a 60 A, 150 V Renogy controller, for larger RV or cabin arrays. Add the BT2 module for app monitoring.

$249.99

For off-grid cabins and remote sites that want a proven 60 A controller with wired network monitoring. Overkill for most RVs and vans.

$698