Morningstar ProStar MPPT 40
#43 in MPPT solarFull review
For boats and remote installs where reliability matters more than price or app features. Most RV owners will get more for their money elsewhere.
Amazon $538$538
2.8/5
For solar-only off-grid systems that want MidNite’s proven 250 V Classic for less money and can live without Ethernet and arc-fault protection.
- 60 ACharge current
- 12/24/36/48/60/72 VBattery
- 250 V maxPV input
- 5 yearsWarranty
Check price at Amazon$685Check price at NAZ Solar Electric$662.16
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 250 V input suits arrays far from the batteries
- Built-in graphic display; several units coordinate charging
- Costs less than the full Classic
- Five-year warranty, extendable
Cons
- No Ethernet or arc-fault detection
- Fan-cooled, so there are parts to wear out
- Only about 55 A into a 48 V bank
The MidNite Classic family
Every MidNite Classic model we rank, smallest first. Ratings compare each against its own type.
| Model | Charge current | Rating | Price |
|---|---|---|---|
| MidNite Classic 250 | 60 A | 2.9/5 | $780.41 |
| MidNite Classic 250-SL (this one) | 60 A | 2.8/5 | $662.16 |
| MidNite Classic 200 | 79 A | 3.1/5 | $680 |
| MidNite Classic 200-SL | 79 A | 3.1/5 | $649 |
| MidNite Classic 150 | 96 A | 3.4/5 | $680 |
| MidNite Classic 150-SL | 96 A | 3.4/5 | $633.87 |
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
| Model number | Classic 250-SL |
|---|---|
| Charging | |
| Type | MPPT solar charge controller |
| Charge current | 60 A |
| Battery voltage | 12/24/36/48/60/72 V |
| Lithium profile | No |
| Custom profile | Yes |
| Temperature sensor | Optional extra |
| Inputs | |
| Max PV voltage (Voc) | 250 V |
| Max PV power (12 V) | 878 W |
| Max PV power (48 V) | 3,212 W |
| Monitoring and build | |
| Bluetooth | No |
| Display | Yes |
| Load output | No |
| Parallel units | Yes |
| Cooling | fan |
| Water resistance | Type 1 (indoor) |
| Dimensions | 378 x 151 x 102 mm (14.87 x 5.95 x 4.00 in) |
| Warranty | 5 years |
Alternatives in this type
MidNite Classic 250
#44 in MPPT solarFull review
For off-grid homes and cabins that want a rugged, made-in-USA controller with network monitoring and longer strings than a 150 V unit. Also handles wind and hydro.
NAZ Solar Electric $780.41$780.41
Schneider Conext MPPT 60 150 Discontinued
#46 in MPPT solarFull review
Mainly for owners of Schneider Conext XW or SW systems who want a matching controller while stock lasts. Others should look at current models.
Amazon $949$949
Compare
Compare the MidNite Classic 250-SL with any other charge controller →
More from MidNite Solar: every MidNite Solar product ranked.