Mango boat
Air Guitar Instructor
- Joined
- Sep 13, 2020
- Messages
- 28
According to what I've seen on the Renogy 20A DC-DC charger it has an input to turn it on and off via D+ (engine on) input. That is usually connected to the ACC circuit so when the alternator is on and charging, the Renogy DC-DC will be charging the LiFePo4 house bank. If you are running the engine then you should be monitoring all systems on your boat. Put an ON/OFF switch on the D+ line and you can manually shut your charger off when your house bank has reached full charge. Your alternator will continue to keep the FLA engine battery topped off and you won't overtax it.
This should protect your alternator and keep everything easy and clean.
This should protect your alternator and keep everything easy and clean.
I know but 20A is enough if I may believe Will Prowse
I have a 280Ah LifePo4 in my Ducato from 2011, no smart alternator.
LifePo can handle more amps but I don´t know if my alternator can handle that and to be save I am intent to buy the 20A version