Dual battery recommendations. What to get? High vs Deep





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  1. #1
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    Default Dual battery recommendations. What to get? High vs Deep

    Hi All

    My deep cycle battery has seen better days and is in need of a replacement.

    Looking for recommendations on what to get.

    Should I go for a high cycle or deep cycle?
    Don't know much about high cycles just that I heard they charge much quicker than a deep cycle but don't like to discharge as deeply.

    The battery that I'll get will be used to power a fridge over night and then charge phones etc.
    Mostly short trips out but there will be at least one longer trip a year (2-3 weeks).

    My concern is if I'm in one spot with a fridge running for a couple days and it drains the battery...will I be able to charge a deep cycle back to 100% just off the alternator or would it need over 24 hours of straight charging?
    This scenario makes me think a high cycle might be better.

    Recommendations on decent batteries will be appreciated.

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    A lot more info is required. The battery is in your trailer I take it. When charging from the alternator is it via a dc charger.? When you are in camp how will you charge. All this will help determine what to look at

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by mplester View Post
    A lot more info is required. The battery is in your trailer I take it. When charging from the alternator is it via a dc charger.? When you are in camp how will you charge. All this will help determine what to look at
    The battery is under the hood of my vehicle.
    Not sure on the charging setup. Was done by the previous owner. Charges when the vehicle is running. Think it's a solenoid. Nothing fancy.

    At camp I'd have to run the vehicle a bit to charge the battery. I am considering looking at a all solar setup as well

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    You will never fully charge a deep cycle with a solinoid system, you would need a dc/dc charge unit.
    Also why not look at solar with a controller to keep the battery charged when stationary

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    For some understanding of a complete system layout - see my system (Not that I say it's the ultimate, but it works very well)
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    2014 Patrol GU 3.0CRD reaching puberty at 103 000 km

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Shwam View Post
    Hi All

    My deep cycle battery has seen better days and is in need of a replacement.



    The battery that I'll get will be used to power a fridge over night and then charge phones etc. High cycle
    Mostly short trips out but there will be at least one longer trip a year (2-3 weeks). Deep cycle

    My concern is if I'm in one spot with a fridge running for a couple days and it drains the battery...will I be able to charge a deep cycle back to 100% just off the alternator NO or would it need over 24 hours of straight charging? Maybe more
    This scenario makes me think a high cycle might be better.

    Recommendations on decent batteries will be appreciated.
    Once more I comment only from experience. When I bought the first Paj it had an NL powerpack and a deep cycle battery. First trip to Mabua in 40C+ and the battery could not keep up with the fridge demand. I was on a hiding to nothing with just the solenoid based powerpack. I just managed with switching the fridge off at night and doing more drives than I intended.

    The solution to that was to add a controller and semi flex panel (100w) to the mix and deploying it whenever I can. The deep cycle eventually died and I replaced with a Deltec 102 amp high cycle. No doubt at all that this recovers back up to 100% very quickly from both the alternator and the panel. I am still prudent though and will set the fridge to kick off at "high"

    In my trailer I put a Royal 1150 K, this is marketed as a deep cycle or a high cycle depending on where you look. I put a 100w solar panel on the roof of the Bundutop and this manages fine ..... unless I start to want to have freezing temps in the fridge when it is 30C+ outside. Again this needs to be managed but I do have the semi flex I can add in and a charger if there is 220V on the travels.

    The best combination I have had, was 2 x 102 amp Deltecs, one in the powerpack and one linked in parallel and the semi flex panel. Never had a problem. In the Gen 3 Pajero (Pajtu) I struggle to have room for 2 batteries.

    Deep cycles are great but if you can't get enough back into them as you use it or after an evenings use then you will just about always be playing catch up. The alternative to that is to switch off the fridge and catch up, this is what the high cycles do better.
    Last edited by Stranger; 2019/08/15 at 03:15 PM.
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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by mplester View Post
    You will never fully charge a deep cycle with a solinoid system, you would need a dc/dc charge unit.
    Also why not look at solar with a controller to keep the battery charged when stationary
    And for how long do you need to drive for the dc-dc charger to charge the battery to 100% ?

    Johan 😎
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    Default Re: Dual battery recommendations. What to get? High vs Deep

    That will depend on how much was taken out of the battery. Also will depend on what dc charger you use.

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by J Snyman View Post
    And for how long do you need to drive for the dc-dc charger to charge the battery to 100% ?

    Johan 😎
    Knowing what I know now, I think a WRND with a DC_DC charger and a MPPT controller will probably be more effective than an NL powerpack and an added PWM if the same Volts are available.
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    X Factor Bundutop trailer (designed by me)
    1998 Blister Fender Pajero 3500 24V (PAJ) (Sold)
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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Stranger View Post
    Once more I comment only from experience. When I bought the first Paj it had an NL powerpack and a deep cycle battery. First trip to Mabua in 40C+ and the battery could not keep up with the fridge demand. I was on a hiding to nothing with just the solenoid based powerpack. I just managed with switching the fridge off at night and doing more drives than I intended.

    The solution to that was to add a controller and semi flex panel (100w) to the mix and deploying it whenever I can. The deep cycle eventually died and I replaced with a Deltec 102 amp high cycle. No doubt at all that this recovers back up to 100% very quickly from both the alternator and the panel. I am still prudent though and will set the fridge to kick off at "high"

    In my trailer I put a Royal 1150 K, this is marketed as a deep cycle or a high cycle depending on where you look. I put a 100w solar panel on the roof of the Bundutop and this manages fine ..... unless I start to want to have freezing temps in the fridge when it is 30C+ outside. Again this needs to be managed but I do have the semi flex I can add in and a charger if there is 220V on the travels.

    The best combination I have had, was 2 x 102 amp Deltecs, one in the powerpack and one linked in parallel and the semi flex panel. Never had a problem. In the Gen 3 Pajero (Pajtu) I struggle to have room for 2 batteries.

    Deep cycles are great but if you can't get enough back into them as you use it or after an evenings use then you will just about always be playing catch up. The alternative to that is to switch off the fridge and catch up, this is what the high cycles do better.
    Nice setup.

    How are you liking the Royal 1150k?
    Seen them for quite cheap online and was considering getting one.

    Is it deep or high cycle?
    Any idea how long it takes to reach full charge off the alternator?

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    I'm not keen to change the charging setup in the vehicle so I think adding a 100w solar setup in the future will be the way to go.

    Views on high or deep cycle for the battery in the vehicle?
    Only have space for 1 battery.

    And recommendations on brands etc.

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Shwam View Post
    Nice setup.

    How are you liking the Royal 1150k?
    Seen them for quite cheap online and was considering getting one.

    Is it deep or high cycle?
    Any idea how long it takes to reach full charge off the alternator?
    I am liking it just fine, it stays in the trailer permanently with the solar panel live all the time.

    Some say deep, some say high ? click here https://www.rectifier.co.za/Batterie...eets/1150K.pdf

    Got mine from Takealot. R1600 bucks, cheaper then the Deltecs

    Dunno, mine is ONLY solar and/or intelligent battery charger
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

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    Default Re: Dual battery recommendations. What to get? High vs Deep

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Shwam View Post
    I'm not keen to change the charging setup in the vehicle so I think adding a 100w solar setup in the future will be the way to go.

    Views on high or deep cycle for the battery in the vehicle?
    Only have space for 1 battery.

    And recommendations on brands etc.
    Just to be sure, you have a crank battery and an aux, yes ?

    High or deep will come down to personal preference, it has been hashed out on this forum more than a few times.

    My personal preference is semi deep/high (which I think the Royal is). I also drive an auto and should my crank battery fail I will have the CCA to start the vehicle.
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    X Factor Bundutop trailer (designed by me)
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    BMW R1200R

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by DC Polokwane View Post
    Best thread on the forum.
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    X Factor Bundutop trailer (designed by me)
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    BMW R1200R

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Stranger View Post
    Just to be sure, you have a crank battery and an aux, yes ?

    High or deep will come down to personal preference, it has been hashed out on this forum more than a few times.

    My personal preference is semi deep/high (which I think the Royal is). I also drive an auto and should my crank battery fail I will have the CCA to start the vehicle.
    Yea that's correct.
    Cranking and then the aux battery.

    The Royal is looking very tempting.
    Seen it for around R1200 off the FB market place

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    I have a Royal 1150k in my vehicle. Works very very well.
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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Wandering_Soul View Post
    I have a Royal 1150k in my vehicle. Works very very well.
    How long does it take to charge fully off the alternator while driving?
    Let's say if it's been discharged to about 50%.

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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Shwam View Post
    How long does it take to charge fully off the alternator while driving?
    Let's say if it's been discharged to about 50%.
    Gets up to 100% on the NL monitor after a 2 to 3 hour drive. My alternator gives 3 to 4 green dots which is roughly 14.2v on NL monitor.

    Downside is it discharges just as fast.

    But I've used it successfully now on many trips running 2 fridge/freezers and other stuff. Only recently added Solar so it is definitely not a bad option.
    Si Vis Pacem Parabellum


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    Default Re: Dual battery recommendations. What to get? High vs Deep

    Quote Originally Posted by Wandering_Soul View Post
    Gets up to 100% on the NL monitor after a 2 to 3 hour drive. My alternator gives 3 to 4 green dots which is roughly 14.2v on NL monitor.

    Downside is it discharges just as fast.

    But I've used it successfully now on many trips running 2 fridge/freezers and other stuff. Only recently added Solar so it is definitely not a bad option.
    Does it have enough charge to run a fridge overnight?

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