Winter project

Johnnygm7lsi said:
I just found one that says up to 800 Ah and also this one


The D250S Dual refines all DC sources including alternators and solar power, to perfectly match the amount of charge the battery requires whilst minimising charge time. The D250S Dual is a 20A multi-step charger that automatically adjusts the charging voltage and current according to the battery state of charge and temperature to ensure that the battery is safely optimised for performance.

90% efficiency
Adapts to parallel energy sources, use with alternator, solar or both
Automatic starter/service battery separation
Input voltage 12.9-22V DC; 14.4V Charge Voltage
Max charge current 20A; charges batteries 40Ah to 300Ah
IP65 rated - splash and dust proof
Temperature sensor
2 year warranty

There must be a few versions of the D250S
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But I did say in my first post that I was thinking of using the D250s plus the smartpass which takes it up to 800Ah
 
soothingduck said:
It can when I have mains power but when in the van I plug it in to a car 12 socket(you know the round type,ciggy lighter type)
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You wouldn't need a voltage regulator then, just a cig lighter socket wired to the 4x1100`s you can get them from Halfords for a few quid
 
Johnnygm7lsi said:
You wouldn't need a voltage regulator then, just a cig lighter socket wired to the 4x1100`s you can get them from Halfords for a few quid
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But my life support will alarm when I flush the loo or any other high drain if I just plug in to a 12v outlet due to the voltage drop (I think)
 
soothingduck said:
But my life support will alarm when I flush the loo or any other high drain if I just plug in to a 12v outlet due to the voltage drop (I think)
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I didn`t read back thru the old thread, but I thought the reason for the extra batteries was to keep the life support independent of the hab batteries, so the life support had its dedicated power supply, but I remember now about the alarm going off, it may be, that it will not happen with the higher capacity of extra batteries
 
Johnnygm7lsi said:
I didn`t read back thru the old thread, but I thought the reason for the extra batteries was to keep the life support independent of the hab batteries, so the life support had its dedicated power supply, but I remember now about the alarm going off, it may be, that it will not happen with the higher capacity of extra batteries
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This is my new way of thinking.....

After looking in to this it all looks like a lot of stuff and messing about to run 2 sets of 2 leisure batteries in my van,so I got to thinking could it be done with one set of 4 batteries with a voltage Regulator on the outlet for my life support?.
As some of you may know this all came about due to my life support alarming when I flushed the loo or any other sudden drain, I think this is down to the voltage drop.
I would like to fit the ctek D250S dual/smartpass as it seems a much more advanced system to the sterling power b2b option with 4x110 Ah batteries in one pack as its a lot simpler.
So my question is could I just fit a voltage regulator to the outlet that I plug my life support in, where to get it from and what is it called.
 
You might be as well getting a small inverter to run the power supply of the life support, if its only for the life support it wouldn`t need to be a big one
 
Have you a maplins near you, you could try them, I did a google on 13.5v voltage regulators but the just seem to be components for building one, what I think you need is a 13.5v voltage stabiliser, something like this, they sell the ctek gear too The 12 Volt Shop scroll down to voltage stabilizers about 3/4 way down past the Ctek chargers
 
The USA one does 13.5 volt and is up to 10 amp (spot on) but $350
The UK one is 12 volt and 5 amp Only just enough and is £30.00

ERMMMM
 
soothingduck said:
The USA one does 13.5 volt and is up to 10 amp (spot on) but $350
The UK one is 12 volt and 5 amp Only just enough and is £30.00

ERMMMM
Click to expand...

I`ll have another google and see if theres a better one, may be better with a little bit over 5amps, that was the first one I came across
 
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