Quote:
Originally Posted by Jkostner
2009 Grayhawk we are plugged in to shot power but the engine battery won't stay charged. Any ideas?
|
I suspect that the same issue is with many of all GreyHawks (and many other Class C's even from other mfgrs). In any case, the issue is that the engine (chassis) battery doesn't get charged from the RV's converter as the batteries are electrically isolated from each other when on shore power.
A couple of options are to use a battery maintainer (small charger) or you could get a special charger that allows the coach batteries to charge the chassis battery that someone listed in the forums... maybe a year ago (forgot the name of it).
I use a marine waterproof 5a charger, although I likely will do something different when time allows, one thing I have done in the past is that I jumpered the "emergency start" relay under the hood so that both chassis and house batteries are tied together which allows the chassis battery to be charged from the converter. ~CA
One other thought for the short term that you may already know, if you hold down the auxiliary start button (many call it the emergency start button) that should allow the solenoid that ties the chassis and coach batteries together to engage and if you keep it held down for ~10 minutes (depending on how low the chassis battery is) then you should be able to start the engine which would allow the battery to charge from the engine's alternator. I would only do this if you don't have other options or just for now as you really don't want the chassis battery to remain dead too long. Also, simply turning the ignition key on if you have some chassis battery power will do the same as pressing the aux start button, in other words with the key on the relay is engaged (at least it is on for my 2010 GreyHawk).