Redarc 40 amp DC to DC Charger issue
After about 15 seconds or so when I start the engine my shunt reads up to almost 49 amps and then the 60 amp input breaker pops. Whats going on here? Isn't the charger supposed to limit the output cur...
Forum Discussion
BFL13 wrote:Have you considered installing a battery isolator? We installed a BI right next to our 40a Renogy dc to dc charger in our truck camper. It's a very simple install and you never have to remember to do anything (switches, ignition, etc.). It will also automatically prevent your dc to dc charger from discharging your TV battery if your alternator fails while driving in the middle of nowhere on an interstate somewhere.
Good point about turning on the DC-DC with the engine off. Never thought of that possibility. I have my Renogy getting its 12v signal (switchable on /off) from the camper not from the truck. Not convenient to get that from the truck.
So idea is to use the DC-DC with the truck engine running, but seeing the above posts, the DC-DC in the camper could be turned on with the truck not running. Have to beware of that.
You can place the BI relay inline with the primary power input to the dc to dc charger, or place the BI relay inline with the Renogy 12v ignition/trigger terminal. In either configuration, the Renogy will never turn-on unless the sensor wire on the BI detects >13.3v. >13.3v will not be present unless the alternator is on-line, operating. If the alternator goes off-line for any reason (failure or engine not running), voltage will drop below 13.3v forcing the BI to remove power to the dc to dc charger. Simple. Reliable.
