The cheapest way to put about 6,000 W of panels on a 48 V bank, with Bluetooth included. Good for budget off-grid builds that can live with a fan and a short track record.
Amazon $309.99The LiTime 100A MPPT Bluetooth is the better charge controller overall, rated 4.4 to 4.2. The LiTime 100A MPPT Bluetooth leads on features. The PowMr POW-M100-PRO 100A MPPT costs $161.01 less ($148.98 vs $309.99).
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 $148.98Prices 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 LiTime 100A MPPT Bluetooth for features (Bluetooth app, lithium profile, temperature sensor, 150 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 | LiTime 100A MPPT Bluetooth | PowMr POW-M100-PRO 100A MPPT |
|---|---|---|
| Overall rating | 4.4/5 | 4.2/5 |
| Value 35% | 92 $3.10 per amp of charge current | 100 $1.49 per amp of charge current |
| Features 25% | 100 Bluetooth app, lithium profile, temperature sensor, 150 V PV input | 65 lithium profile, temperature sensor, 150 V PV input; no Bluetooth |
| Efficiency 20% | 75 98% peak efficiency (maker rating) | 75 98% peak efficiency (maker rating) |
| Warranty 20% | 50 3-year warranty | 50 warranty not published (neutral score used) |
Specifications
| LiTime 100A MPPT Bluetooth | PowMr POW-M100-PRO 100A MPPT | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | MPPT solar charge controller |
| Charge current | 100 A | 100 A |
| Battery voltage | 12/24/36/48 V | 12/24/36/48 V |
| Lithium profile | Yes | Yes |
| Custom profile | - | Yes |
| Temperature sensor | Included | Included |
| Peak efficiency | 98% | 98% |
| Standby draw | 10 mA | 44 mA |
| Inputs | ||
| Max PV voltage (Voc) | 150 V | 150 V |
| Max PV power (12 V) | 1,500 W | 1,200 W |
| Max PV power (48 V) | 6,000 W | 4,800 W |
| Monitoring and build | ||
| Bluetooth | Built in | No |
| Display | Yes | Yes |
| Load output | No | No |
| Parallel units | - | Yes |
| Cooling | fan + heat sink | fan |
| Water resistance | IP21 | IP32 |
| Dimensions | 252 x 201 x 80.3 mm | 315 x 195 x 80 mm |
| Weight | 5.5 lb | 6 lb |
| Warranty | 3 years | - |
| Released | 2025-06 | 2024-06 |
