PowMr POW-M100-PRO 100A MPPT
#13 in MPPT solarFull review
The cheapest 100 A controller here for a 48 V off-grid bank, with paralleling for growth. Pick it if you don’t need an app and can check status on the screen.
Amazon $148.98$148.98
The PowMr POW-M100-PRO 100A MPPT is the better charge controller overall, rated 4.2 to 3.3. The PowMr POW-M100-PRO 100A MPPT leads on value and efficiency. The Victron SmartSolar MPPT RS 450/200 wins on features. The PowMr POW-M100-PRO 100A MPPT costs $1,803.06 less ($148.98 vs $1,952.04).
Victron SmartSolar MPPT RS 450/200
#34 in MPPT solarFull review
For large 48 V off-grid homes with 10 kW or more of panels across several roof faces. One unit replaces two or three 250/100s, but check whether your inspector requires UL listing.
Amazon $1,952.04$1,952.04
Prices 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.
Which should you buy?
- Choose the PowMr POW-M100-PRO 100A MPPT for value ($1.49 per amp of charge current vs $9.76 per amp of charge current) and efficiency (98% peak efficiency (maker rating) vs 96% peak efficiency (maker rating)).
- Choose the Victron SmartSolar MPPT RS 450/200 for features (Bluetooth app, lithium profile, temperature sensor, 450 V PV input vs lithium profile, temperature sensor, 150 V PV input; no Bluetooth).
Scores side by side
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 | PowMr POW-M100-PRO 100A MPPT | Victron SmartSolar MPPT RS 450/200 |
|---|---|---|
| Overall rating | 4.2/5 | 3.3/5 |
| Value 35% | 100 $1.49 per amp of charge current | 3 $9.76 per amp of charge current |
| Features 25% | 65 lithium profile, temperature sensor, 150 V PV input; no Bluetooth | 100 Bluetooth app, lithium profile, temperature sensor, 450 V PV input |
| Efficiency 20% | 75 98% peak efficiency (maker rating) | 25 96% peak efficiency (maker rating) |
| Warranty 20% | 50 warranty not published (neutral score used) | 100 5-year warranty |
Specifications
| PowMr POW-M100-PRO 100A MPPT | Victron SmartSolar MPPT RS 450/200 | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | MPPT solar charge controller |
| Charge current | 100 A | 200 A |
| Battery voltage | 12/24/36/48 V | 48 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | Yes |
| Temperature sensor | Included | Included |
| Peak efficiency | 98% | 96% |
| Standby draw | 44 mA | 15 mA |
| Inputs | ||
| Max PV voltage (Voc) | 150 V | 450 V |
| Max PV power (12 V) | 1,200 W | - |
| Max PV power (48 V) | 4,800 W | 11,520 W |
| Monitoring and build | ||
| Bluetooth | No | Built in |
| Display | Yes | Yes |
| Load output | No | No |
| Parallel units | Yes | Yes |
| Cooling | fan | fan |
| Water resistance | IP32 | IP21 |
| Dimensions | 315 x 195 x 80 mm | 487 x 434 x 146 mm |
| Weight | 6 lb | 30.2 lb |
| Warranty | - | 5 years |
| Released | 2024-06 | 2020-11 |