Double Output Solar Charge Controller

Discussion in 'Solar Power' started by andy63, Apr 24, 2015.

  1. andy63

    andy63 Funster

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    hi, hoping for a bit advice /guidance..
    there was a thread last week asking about using the 2nd outlet on a controller to charge batteries and it was established it was most probably a battery load output and not suitable for charging, but someone did say dual output controllers were an option.. ive had a look.......
    would like to be able to charge a start battery and feel this would be a good solution , as opposed to say a single output controller and using a voltage sensing relay to link the start battery..
    I have noticed that all the double outlet controllers are pwm.. cant find an mppt one...not sure why, but think this may still be the best way to go , ie is a pwm controller a reasonable option... it would be a 10a controller running a 120w panel..
    any advice and views appreciated
    thanks andy
     
  2. Techno

    Techno Funster Life Member

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    Do you want to give priority to your starter battery or your leisure battery. What is most important to you
     
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  3. NickNic

    NickNic Funster Life Member

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    Wouldn't a battery master do the just as well with less messing around?
     
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  4. andy63

    andy63 Funster

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    jesus that was quick andy :)
    the leisure would take priority
    ta
     
  5. andy63

    andy63 Funster

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    not familiar with itwill have a look... is it a mains only device
    ta andy
     
  6. Techno

    Techno Funster Life Member

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    Just fit a normal regulator and a CBE CSB2 relay about £22 ebay This will only send charge to the starter battery once your leisure has reached 13.6 volts. After reaching 13.6 the relay will pass up to 4 amps max to the starter battery until the leisure drops to 12.6. SO if you put a load on the leisure battery the voltage will immediately drop to 12.6 or less and stop sending precious charge to the starter battery.

    For those who need to preserve their starter battery at all costs like when in storage then a Vanbitz battery master is the best option as this will transfer 1.1 amps while ever the starter is half a volt lower than the leisure
     
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  7. NickNic

    NickNic Funster Life Member

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    No. It trickle charges your engine battery from the leisure battery and keeps it topped up. So whatever your charge source is, EHU, solar etc charges your leisure battery in the normal way and the battery master takes care of your engine battery.

    http://shop.motorhomefun.co.uk/product/battery-master/
     
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  8. andy63

    andy63 Funster

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    thanks for the input andy ..ill have a look at the relay option
     
  9. andy63

    andy63 Funster

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    thanks , ill look at all the options mentioned,
    andy
     
  10. Techno

    Techno Funster Life Member

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  11. hilldweller

    hilldweller Funster Life Member

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  12. andy63

    andy63 Funster

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    it isn't lol...
    I have a a dual sensing 120 amp blue sea relay connecting my leisure with the auxiliary vehicle battery and has been working well for years.. the transit dual battery set up isolates the start battery completely when you switch off ignition so that isnt an issuefor me..(the start battery does get charges off a 3 output stirling pro charge 20 when on hook up )
    was just wanted to know if a dual output controller might be a better option on another planed installation, and why I couldn't find a dual output mppt type controller...
    many thanks for all the replies
    ta andy
     
  13. funflair

    funflair Funster Life Member

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    Hi @andy63 our Votronic does the engine battery as well if required but we have that function built in with the CBE system so I have not got it wired.

    It is called Duo and is MPPT it passes 1 amp to the starter battery to the correct voltage.

    Got ours from Road Pro.
     
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  14. Techno

    Techno Funster Life Member

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  15. andy63

    andy63 Funster

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    Once again thank you for the input @funflair and @Techno100 .I'll do the reading ,am inclined towards the cbe csb2 relay you linked to andy... For the batt link
    Cheers again ...andy
     
  16. eddievanbitz

    eddievanbitz Trader - Funster

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    Well I've just donated a Baattery Master is a sort of auction for Haggers who is running a double marathon. Worth a fiver bid to save £65.00 if no one else bids

    The original and the best, automatically shuts down if short circuited, over loaded or under voltage, guaranteed 100% fully waterproof, vibration and dust proof and of course has built in automatically resetting fuses (y)
     
  17. eddievanbitz

    eddievanbitz Trader - Funster

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  18. andy63

    andy63 Funster

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    Cheers Eddie. Very generous offer...not sure how you are working your auction..is it a new donation required to enter ..I sponsored Paul when he first mentioned it a few weeks back along with a few others off the forum..
    Ta andy
     
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  19. irnbru

    irnbru Funster Life Member

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  20. eddievanbitz

    eddievanbitz Trader - Funster

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    Didn't think of that?

    Ah, problem solved lol
     
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