A popular 40 A controller for 12/24 V RV and cabin systems with up to about 520 W of panels. Budget for the BT-2 module if you want app monitoring.
Amazon $159.99The Renogy Rover 40A is the better charge controller overall, rated 4.0 to 3.9. The Renogy Rover 40A leads on warranty and features. The EPEVER Tracer 4210AN G3 wins on value. The EPEVER Tracer 4210AN G3 costs $41 less ($118.99 vs $159.99).
A budget 40 A controller for owners who are happy setting it up on its own screen. Add the Bluetooth adapter if you want phone monitoring.
Amazon $118.99Prices were last checked October 22, 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 Renogy Rover 40A for warranty (3-year warranty vs 2-year warranty) and features (Bluetooth add-on, lithium profile, temperature sensor; 100 V PV limit vs Bluetooth add-on, lithium profile, temperature sensor; no temperature sensor).
- Choose the EPEVER Tracer 4210AN G3 for value ($2.97 per amp of charge current vs $4 per amp of charge current).
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 | Renogy Rover 40A | EPEVER Tracer 4210AN G3 |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 35% | 80 $4 per amp of charge current | 94 $2.97 per amp of charge current |
| Features 25% | 69 Bluetooth add-on, lithium profile, temperature sensor; 100 V PV limit | 59 Bluetooth add-on, lithium profile, temperature sensor; no temperature sensor |
| Efficiency 20% | 75 98% peak efficiency (maker rating) | 75 98% peak efficiency (maker rating) |
| Warranty 20% | 50 3-year warranty | 25 2-year warranty |
Specifications
| Renogy Rover 40A | EPEVER Tracer 4210AN G3 | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | MPPT solar charge controller |
| Charge current | 40 A | 40 A |
| Battery voltage | 12/24 V | 12/24 V |
| Lithium profile | Yes | Yes |
| Custom profile | - | Yes |
| Temperature sensor | Included | Optional extra |
| Peak efficiency | 98% | 98% |
| Standby draw | 100 mA | 8 mA |
| Inputs | ||
| Max PV voltage (Voc) | 100 V | 100 V |
| Max PV power (12 V) | 520 W | 520 W |
| Monitoring and build | ||
| Bluetooth | Optional add-on | Optional add-on |
| Display | Yes | Yes |
| Load output | - | Yes |
| Water resistance | IP32 | IP30 |
| Dimensions | 9.38 x 6.78 x 3.05 in | 252 x 180 x 63 mm |
| Weight | - | 3.6 lb |
| Warranty | 3 years | 2 years |
