Leisure Battery

Discussion in 'Tech/Mech General' started by davethespark, Aug 11, 2016.

  1. davethespark

    davethespark Funster

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    Hi everybody

    I am thinking of investing in an EZA 12v lithium power pack to replace lead acid batteries. I know they are expensive But we are looking for stress free living and these look ideal.
    Has any one got any experience of them ,and are there any reviews for their long term use? All I can find is basically advertising

    Cheers DC
     
  2. Robin McHood

    Robin McHood Funster

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  3. pappajohn

    pappajohn Funster Life Member

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    In my opinion the tech for large batteries is too new.
    In a real world how long will they really last, how many charge cycles before they begin to deteriorate.
    The cost will buy many conventional lead acids, far outlasting in total one lithium.

    Trojan or similar traction batteries would be a much wiser buy in view.
     
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  4. scotjimland

    scotjimland Funster Life Member

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  5. hilldweller

    hilldweller Funster Life Member

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    Then I can see why you are thinking of using the technology the set fire to Sony laptops, that grounded the new Boeing Dreamliner, that turns Tesla cars into fireballs.

    Lithium is good when weight and space is vitally important.
     
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  6. tonyidle

    tonyidle Funster

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    Lithium has many advantages over lead acid: little or no voltage drop-off as they discharge, difficult to damage in storage, no requirement for top-up charging, simple and precise charging systems, very high current capacity with very little voltage sag under heavy loads (excellent for inverter use). They're expensive but may cost little or no more than equivalent lead acid long term. One mistake with a lead acid can kill it or substantially reduce its lifespan - something that's almost impossible to do to a lithium battery.
     
  7. davethespark

    davethespark Funster

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    Has anybody got or had one of these? if so what are your views
     
  8. Robin McHood

    Robin McHood Funster

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    @davethespark
    http://www.technomadia.com/2015/02/living-the-lithium-lifestyle-3-5-year-lithium-rv-battery-update/

    These guys actually use lithium batteries and have done for years, know the difference between the various types, don't confuse the ones originally used on Dreamliners and Sony laptops etc with the type used in the EZA and provide a proper review based on personal knowledgeable experience as opposed to a report of a chat between two people. So suggest you read the above and then make up your mind.

    Chris may even reply to a nicely worded email, he did to a query of mine.
     
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  9. davethespark

    davethespark Funster

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    That was really interesting, I dont think my wife would let me build a DIY system but my gut feeling is that lithium is the way to go. I have heard countless negative opinions but very little evidence drawn from experience. We are going to the Lincoln show next month and hopefully EZA will have a presence,so I can get more info, And get some feedback from previous customers .I dont think this is unreasonable given the price of the unit.

    Thanks very Much DC
     
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  10. Robert Clark

    Robert Clark Funster Life Member

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    Last edited: Aug 14, 2016
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  11. jonandshell

    jonandshell Funster

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    All the above will not work.
    The EZA Lithium unit has its own inbuilt charger. You simply connect it to your starter battery via an Anderson plug and there are inputs for the rest.
    A B2B would be made redundant.
    There is an installation guide below-

    https://www.roadpro.co.uk/catalogue/02a-eza-lithium-power-packs
     
  12. jonandshell

    jonandshell Funster

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    At £2700, I'll be keeping my A2B charger and traction batteries!
    I note that the EZA pack can only have a maximum of 1500w inverter and cannot be used for an emergency jump start.
     
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  13. Robert Clark

    Robert Clark Funster Life Member

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    I wonder if the Victron Lithium Batteries would be more compatible with their own solar controllers, inverters and chargers?
     
  14. funflair

    funflair Funster Life Member

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    The 1500 watt inverter on a 80ah battery would be pretty good but I would expect a touch higher on the 130ah version although 1500 watts is as much as we would need.

    Solar panels go direct to the unit without a regulator.


    Quote from installation
    • Only connect devices which supply a voltage value between 18 and 22 Volts and a maximum current of 40A. Maximum allowed power: 400W.

    •  Make sure that no external solar panel regulator is connected to the solar panel. A specific high efficiency lithium regulator is integrated in the EZA battery.

      Martin
     
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  15. funflair

    funflair Funster Life Member

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    Hi Robert

    Any solar panel 18 to 22 volts max 40 amps or 400 watts (which doesn't seem to tally)

    Martin
     
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  16. jonandshell

    jonandshell Funster

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    This will make you think-

    My present system-

    3x 115 AH traction batteries £360
    1x Alternator to Battery charger £330
    1x 2100w Inverter £400
    Leads and sundries £100
    Effective useable capacity 276 Ah at 80% DoD.

    Total £1190, or £4.31 per Ah.

    EZA system-

    2x 130 Ah EZA packs £5590
    2x Cables £144
    1x Coupling Kit £495
    1x EZA 1500w Inverter £988
    Sundies £100.

    Total effective available capacity is not published but I will call it 260Ah.

    Total £7317, or £28.14 per Ah.
     
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  17. Robin McHood

    Robin McHood Funster

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    Lithiums at present cannot compete on a pure like for like cost basis, however they do have offsets to that high initial cost.
    The estimated lifecycle at present for properly installed lithium powerpacks is as high as 20+ years, during which time your standard batteries would have had to be replaced several times, especially the AGM or gel types. We reckon on a maximum of 5 years for the ones we use for mission critical applications and we treat them with loving care and attention!

    Lithium's can also have more 'usable' capacity which can be taken advantage of by either reducing the AHC or the weight carried or both., or indeed increasing your off EHU endurance.

    It rather depends on whether these factors provide enough draw to make it worth your while and paying that large initial up front cost.
     
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  18. funflair

    funflair Funster Life Member

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    But nobody said it was cheap.

    What's the weight of your traction batteries 100kg or more? What does the EZA system weigh? you would most likely be OK with the 130ah system so saving a Few quid, no solar regulators needed so you could save a couple of hundred there so could knock nearly £3k of the price, So about £4K to save a few kg and a lump of space that not everybody has for traction batteries.

    Martin
     
  19. Bart

    Bart Funster

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    But all that cost for lithium batteries that ..YES will out live the lead batteries. But in 5 years time the expensive lithium batteries will be so outdated as technology moves on . And the lithium batteries in 5 years time will be more superior that you would most likely want to change them anyway.
     
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  20. jonandshell

    jonandshell Funster

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    EZA 130 Ah 25kg
    Lead acid 130 Ah traction 28Kg
     
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