Name: BougeRV Sunflow 40A
Brand: BougeRV
Price: 139.99 USD

A low-cost 40 A controller with app monitoring built in, for 12/24 V van and RV systems up to about 600 W.

Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Cons

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

Charging
Model number	BJ2440N
Type	MPPT solar charge controller
Charge current	40 A
Battery voltage	12/24 V
Lithium profile	Yes
Custom profile	Yes
Peak efficiency	99%
Inputs
Max PV voltage (Voc)	95 V
Max PV power (12 V)	600 W
Monitoring and build
Bluetooth	Built in
Display	Yes
Load output	Yes
Cooling	passive
Warranty	1.5 years

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.

$70.55

For 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.

$368.90

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.

$159.99