Dual Battery Management

[Desertdude]

Which switch model? THIS ONE?

 

[Desertdude]

like the jpg below?

 

[Icewalker]

like the jpg below?

It's like that but has two additional terminals listed as F1 and F2? it's model 9003E? With AFD ?

Jeff

 

[njtaco]

IIRC, the field connections are to disable the alternator when switching between batteries. As you switch, the alt. is "shut off" so it is not damaged when the batteries are momentarily disconnected while the switch is making/breaking.

 

[Desertdude]

IIRC, the field connections are to disable the alternator when switching between batteries. As you switch, the alt. is "shut off" so it is not damaged when the batteries are momentarily disconnected while the switch is making/breaking.

according to the diagram this appears to be the case.

• AFD: Cut the field wire from the alternator to the voltage regulator; connect one end to F1, and the other end to F2.

>>> So, you would need to have a wiring diagram to suss out on your specific vehicle what color and where the wire is to cut <<<<


9002e AFD PDF diagram

:::

 

[njtaco]

Or don't switch the batteries while the engine is running...

 

[Beowulf]

So as it has been almost two years since the last post, I wanted to bring this thread back and check in for management unit reviews, Solar panel upgrades, and batteries selections.

 

[Beowulf]

Just got the latest issue of OJ and it has all the reviews of Management Systems anyone could want.