For large 48 V cabin, RV or boat systems of around 4 kW of panels. Worth the premium if you want Victron’s app, BMS control and warranty.
Amazon DRSA $402.05
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.
- 100 ACharge current
- 12/24/36/48 VBattery
- 150 V maxPV input
- 98%Efficiency
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
- Handles about 4,800 W of panels on a 48 V bank for well under $200
- Up to 12 units can share one bank as the array grows
- Temperature sensor and parallel cable come in the box
- LiFePO4 presets and a fully custom mode, set from the unit’s own buttons
- No Bluetooth or monitoring port, so no app or remote logging
- Fan-cooled, and the warranty term isn’t published
- 150 V input limits series strings
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 | POW-M100-PRO |
|---|---|
| Charging | |
| Type | MPPT solar charge controller |
| Charge current | 100 A |
| Battery voltage | 12/24/36/48 V |
| Lithium profile | Yes |
| Custom profile | Yes |
| Temperature sensor | Included |
| Peak efficiency | 98% |
| Standby draw | 44 mA |
| Inputs | |
| Max PV voltage (Voc) | 150 V |
| Max PV power (12 V) | 1,200 W |
| Max PV power (48 V) | 4,800 W |
| Monitoring and build | |
| Bluetooth | No |
| Display | Yes |
| Load output | No |
| Parallel units | Yes |
| Cooling | fan |
| Water resistance | IP32 |
| Dimensions | 315 x 195 x 80 mm |
| Weight | 6 lb |
| Released | 2024-06 |
Alternatives in this type
The pick for small van, trailer or boat systems with one or two panels. It costs little, has a polished app and a five-year warranty.
Amazon Expion360 $70.55For large RV, cabin or boat systems that need 60 A and long series strings. Worth the premium if you want Victron’s app, BMS control and warranty.
Amazon DRSA $368.90Compare
Compare the PowMr POW-M100-PRO 100A MPPT with any other charge controller →
More from PowMr: every PowMr product ranked.