I use a Blue Sea ACR to charge a 2 battery system.
I'm not sure I understand the concept of the Stealth AC module. It doesn't appear to eliminate the need to plug in a charger for overnight charging and I don't know how it could.
The Blue Sea unit combines two batteries when either sees a charging source, be it AC charger or engine alternator. The advantage to it is that anytime the motor is running, both batteries are receiving a charge and when you kill the motor, the batteries are disconnected.. I assume the Stealth does the same thing. What does the Stealth cost? I didn't see any pricing on their website.
2015 Seaark 1872 MV CC Etec-90
Two Helix 12 CHIRP SI's, , MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
2018 Robalo R180 CC, Yamaha 115
Bitter Gun Owner