Disconnected start battery and VCR

[ithet]

I have had to disconnect my engine start battery. I managed to start engine yesterday using the Victron cyrix start connect function. But today I have had to disconnect the battery as it was getting hot on mains charger.

If I start engine today, will it charge domestics ok or will the VCR not function due to no voltage on the (removed) engine battery side?

This is just for a a get home situation.

 

[ithet]

.... The Cirix info page suggests it does not.close if 0v on one side. I am worried that if I run engine with no start battery and the VCR does not close I will damage my alternator?

 

[B27]

Can you move the two battery connections to the same side of the VSR, so they are bolted together?
Or link across with some wire?

 

[PaulRainbow]

I have had to disconnect my engine start battery. I managed to start engine yesterday using the Victron cyrix start connect function. But today I have had to disconnect the battery as it was getting hot on mains charger.

If I start engine today, will it charge domestics ok or will the VCR not function due to no voltage on the (removed) engine battery side?

This is just for a a get home situation.

What switching arrangement do you have ?

 

[Refueler]

.... The Cirix info page suggests it does not.close if 0v on one side. I am worried that if I run engine with no start battery and the VCR does not close I will damage my alternator?

I cannot answer your Cirix question ... other such as Paul will do that ...

But on the damage to Alternator matter :

Damage to alternators (diodes actually) is usually a result of disconnecting alternator when its running. Basically the alternator then ramps up and blows regulator. Many modern alternators claim they are designed to not have this happen - but its not good idea to trust it !!

Starting and running an engine with alternator that is disconnected before start - is fine ... as alternator is not excited - therefore not trying to charge anything.

 

[ithet]

All sorted as managed to get new battery from very helpful Yachtmail chandlery here at Townquay Lymington. Delivered to boat on old one taken away. Cheers all.