Advice wanted on how to set a time delay for charging leisure batteries after engine start.

[68c]

I worry that, as soon as the engine starts and the alternator outputs, it has to recharge the starter battery, the two leisure batteries and the 12v supply to the fridge and may put an unnecessary load on the alternator. This being worse when camping for a few days not on EHU. Yes I do have solar.
I am considering a timer circuit to interupt the D+ signal for about ten minutes to allow the starter batt to recharge and the engine etc to warm up.
Has anyone done this?

 

[TinaLes]

Happy New Year 68c
I am wondering why you are concerned about putting a load on your alternator? Have you had one burn out recently?
Most alternators on MH's are heavy duty ones capable of supplying high enough currents to charge up batteries, and run on board fridges etc without too much concern.
Those that have fitted high power B2B's to charge up batteries faster in the main, do not need to fit a delay circuit to their D+ either.
Can you give us a little more info & reasons why you feel the need for a delay circuit?
Many Thanks.
LES

 

[suavecarve]

I know nothing whatsoever on this subject and I have no concerns at all about it and will continue without any possible preventative planning

 

[jumar]

I use a Victron B2B...it provide a delayed charge to my leisure battery set how I want it. Lots of Tech information on past threads..,

 

[68c]

And a happy New Year to you TinaLes. Probably a daft idea, just that I thought the charging system was designed for a delivery van, not expected to charge two, possibly flat, extra batteries and the fridge. We do have 120Amp alternator, no aircon, so I suppose I am worrying about nothing.

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[Lenny HB]

120 amp alternator is quite small for a Motorhome but more than enough for your setup.
Starter battery will get the lions share when charging due to the heavy cables and shortest cable run to the alternator.
You are worrying about nothing.