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  1. #21
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by Fluffy View Post
    I think we are all still learning with these new technologies.

    Not helped by all the misinformation and charlatans out there.
    So true. Am learning a lot especially the behaviour of bms's with dc-dc chargers, vehicle cabling, anderson plugs etc.. The good old lead acid bat is plug and play and very forgiving. Lifepo4 is ....complicated.
    2002 Discovery td5

  2. #22
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    Default Going LifePo4 and ditching the current charging system

    Quote Originally Posted by nevillet View Post
    Be extremely careful when going Blu Nova route and get exact requirements and guarantee conditions from them.Am negotiating for a replacement on what appears to be a faulty battery and not happy with the diagnoses and response, so far. will follow up on this post
    Blu Nova honoured their guarantee and replaced my battery. According to them they have never seen the problem I had, before
    Last edited by nevillet; 2021/10/12 at 08:08 AM.

  3. The Following 3 Users Say Thank You to nevillet For This Useful Post:


  4. #23
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    Default Re: Going LifePo4 and ditching the current charging system

    BN replaced my 2 batteries without any issues. The management systems went wonky

  5. #24
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    Default Re: Going LifePo4 and ditching the current charging system

    Would you guys that have had issues with the BlueNova's mind giving more details please?

    I have one in the back of my car and wouldn't mind knowing what to watch out for! I'm sure I'm not the only one who's interested either.
    Justus Immelman

    2001 Range Rover P38

  6. #25
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by TRON View Post
    BN replaced my 2 batteries without any issues. The management systems went wonky
    Mine suddenly went flat. Only 3 volt. On opening at BN. The cells had swollen. It was assumed that BMS had failed.

  7. #26
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by nevillet View Post
    Mine suddenly went flat. Only 3 volt. On opening at BN. The cells had swollen. It was assumed that BMS had failed.
    Mine went to “sleep” and we originally connected a pulser which kept them going for two years until the sleeping reoccurred and on stripping the batteries it was decided that the BMS had failed. They changed both batteries without any further issues.

  8. #27
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    Default Re: Going LifePo4 and ditching the current charging system

    After all the comments and If one was considering LifePo4 what would be the correct battery and setup

  9. #28
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by Quintin2812 View Post
    After all the comments and If one was considering LifePo4 what would be the correct battery and setup
    Basically, irrespective of which LifePo4 you get
    You need to change your chargers, be it
    DC-DC
    AC-DC
    Solar

    Victron handles LifePo4 charging well, and you can tweak the settings if it’s a Bluetooth model.

  10. #29
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    Default Re: Going LifePo4 and ditching the current charging system

    Which DC-DC chargers have shown to be working just fine with lithium? Victron yes. National Luna or Ctek etc.?

  11. #30
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by nevillet View Post
    Mine suddenly went flat. Only 3 volt. On opening at BN. The cells had swollen. It was assumed that BMS had failed.
    Keen to know little more. What type of AC-DC and DC-DC chargers do you use?

  12. #31
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by Teryos View Post
    Keen to know little more. What type of AC-DC and DC-DC chargers do you use?
    Victron 15 amp and National Luna with li-on settings. Both set up for Li-on

  13. #32
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by Teryos View Post
    Keen to know little more. What type of AC-DC and DC-DC chargers do you use?
    Victron Blue Smart 15A and National Luna 25A DC/DC. Both set up for Lifepo4
    Pete Williamson

    ADVENTURE BEFORE DEMENTIA

    2002 Mitsubishi Colt Rodeo 3.0

  14. #33
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by petewill View Post
    Victron Blue Smart 15A and National Luna 25A DC/DC. Both set up for Lifepo4
    Same here.
    www.lani4travel.com

    Louis Le Grange

  15. #34
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    Default Re: Going LifePo4 and ditching the current charging system

    Sorry: I see this was actually mentioned in the earlier posts on page 1.

    If one presumes we are using a battery like the Blue Nova with the built in BMS.

    So called drop inn replacements.

    Why would we need a DC-DC charger at all?

    Would the 14.5V direct from the alternator not be ideal?

    The DC-DC's came in to cope with deep cycle batteries and trying to top them up (and combat voltage drop) above the 14.5V. And that's why the original DC-DC are not valid for Lithium. They do the whole battery save and top up thing.

    From what I can fathom from the drop in charging requirements they just want steady current.
    Click image for larger version. 

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    Last edited by Quiksilver; 2021/10/20 at 01:23 PM.
    2007 Jeep Grand Cherokee 3.0 CRD Overland - GDE Eco Tune + 2" Lift on 265/70/17 BFG KO2's
    2017 Venter Savuti + Tentco Jnr, Dometic CF50 Fridge + Snomaster Battery Box
    --
    Ex - 2005 Cherokee CRD

  16. #35
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    Default Re: Going LifePo4 and ditching the current charging system

    "From what I can fathom from the drop in charging requirements they just want steady current"

    They want a steady voltage and max amps per spec - which is steady current kinda

    so the dc to dc's also regulate amps not just volts

  17. #36
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    Default Re: Going LifePo4 and ditching the current charging system

    Thanks - yes that probably more correct terminology.

    Either way, my alternator is unlikely to provide 50+ amps isn't it?
    2007 Jeep Grand Cherokee 3.0 CRD Overland - GDE Eco Tune + 2" Lift on 265/70/17 BFG KO2's
    2017 Venter Savuti + Tentco Jnr, Dometic CF50 Fridge + Snomaster Battery Box
    --
    Ex - 2005 Cherokee CRD

  18. #37
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    Default Re: Going LifePo4 and ditching the current charging system

    Quote Originally Posted by Quiksilver View Post
    Thanks - yes that probably more correct terminology.

    Either way, my alternator is unlikely to provide 50+ amps isn't it?

    It will try and could potentially hurt the alternator itself
    Mike

    Out in the bush!

    2012 Amarok with a transfer case
    1956 Series 1 (now in boxes, Covid delayed the rebuild)
    1999 Land Cruiser 105 EFI

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