The Morningstar GenStar MPPT 100 and the Morningstar GenStar MPPT 80 are evenly matched, rated 3.8 and 3.8. The Morningstar GenStar MPPT 80 costs $176 less ($1,172 vs $1,348).
For off-grid homes and remote sites that want one controller with full networking, a load output and Morningstar’s fanless reliability. Hard to justify for a simple RV or cabin system.
Amazon $1,422 NAZ Solar Electric $1,348For off-grid homes and remote sites that want one controller with full networking, a load output and Morningstar’s fanless reliability. Hard to justify for a simple RV or cabin system.
Amazon $1,236 NAZ Solar Electric $1,172Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every MPPT solar charge controller; a clear win is highlighted. How we rank explains each one.
| Factor weight | Morningstar GenStar MPPT 100 | Morningstar GenStar MPPT 80 |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Value 35% | 0 $13.48 per amp of charge current | 0 $14.65 per amp of charge current |
| Features 25% | 100 Bluetooth app, lithium profile, temperature sensor, 200 V PV input | 100 Bluetooth app, lithium profile, temperature sensor, 200 V PV input |
| Efficiency 20% | 100 99% peak efficiency (maker rating) | 100 99% peak efficiency (maker rating) |
| Warranty 20% | 100 5-year warranty | 100 5-year warranty |
| Morningstar GenStar MPPT 100 | Morningstar GenStar MPPT 80 | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | MPPT solar charge controller |
| Charge current | 100 A | 80 A |
| Battery voltage | 12/24/48 V | 12/24/48 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | Yes |
| Temperature sensor | Included | Included |
| Peak efficiency | 99% | 99% |
| Standby draw | 200 mA | 200 mA |
| Inputs | ||
| Max PV voltage (Voc) | 200 V | 200 V |
| Max PV power (12 V) | 1,350 W | 1,075 W |
| Max PV power (48 V) | 5,400 W | 4,300 W |
| Monitoring and build | ||
| Bluetooth | Built in | Built in |
| Display | Yes | Yes |
| Load output | Yes | Yes |
| Cooling | passive (fanless) | passive (fanless) |
| Water resistance | IP20 | IP20 |
| Dimensions | 360.4 x 222 x 170.2 mm (14.2 x 8.75 x 6.70 in) | 360.4 x 222 x 170.2 mm (14.2 x 8.75 x 6.70 in) |
| Weight | 16.4 lb | 15.6 lb |
| Warranty | 5 years | 5 years |
| Released | 2023-06 | 2023-06 |
