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Thread: Recommended papers/pdf's/websites on charging Lithium Batteries?

  1. #11
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    Thanks Gav,, That Bushman could turn out to be the ducks!
    max 4.5 and av 3A??? Unbelievable!
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  2. #12
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    Quote Originally Posted by Pedro_The_Swift View Post
    Thanks Gav,, That Bushman could turn out to be the ducks!
    max 4.5 and av 3A??? Unbelievable!
    they are nice units....
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  3. #13
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    Found this--
    How to Find Happiness With LiFePO4 (Lithium-Ion) Batteries - Solacity Inc.

    might have to aircon the battery box...
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!


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  4. #14
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    Not sure how you could keep them below 30 or even 45 degrees over here - even down south here, much less up your way.

    Mine has lived inside the van and now resides under the front seat in Stan - that seems to be a step backwards as it will potentially get much hotter in there so may have to rethink this before next Summer, which is quite possible as at some point I want to add a decent inverter and that won't fit anywhere near where the battery is at the moment.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

  5. #15
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    Quote Originally Posted by Homestar View Post
    What do you cook on if you ditch gas and want to be stand alone? Induction? Always seems such a waste having to over spec the entire system - inverter, batteries, cables, etc to use electric for cooking off grid when gas is so available anywhere and if you’re only running a cooktop a 9kg bottle lasts ages. Want to simmer a stew for a couple of hours - forget it on induction and batteries.
    I spent a bomb on my lifepo4 setup and i would never really cook on induction unless solar was very strong, which it almost never is plus another problem of induction is you really want to go electric water heating or else why bother? you still have the gas bottle, but electric shower heating is just the final blow power consumption wise. simmering is not that great on induction cookers that simply vary the duty cycle of a fixed input power.

  6. #16
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    OK,, from what I have read so far,
    Lithium runs quite nicely not at 100% charge, in fact its better on the battery not to reach 100%,
    This might be a problem for vans that "sit" outside, waiting for the next trip.
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!


    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]

  7. #17
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    Some of my lithium batteries are now close to 9 years old and I have always kept them at a 100% charged state between uses, and this is regardless off whether they are being cycled on a daily or left for years at a time.

    To date, they are all still supplying full discharge capacities.

    I deliberately left a couple of them, originally intended to be for two years, but was close to 4 years, when I carried out a discharge cycle on both, and found they had lost just 4% of their capacity, which was regained in the next charge/discharge cycle.

    So far, I have only managed to damage ( intentionally ) two lithium batteries and this took quite a few 400% discharge cycles before each battery dropped a cell.

    As mentioned, this type of testing was being carried out for another company as they wanted to know what these batteries could tolerate as very little spec info was supplied back then.

    I must say, I was very impressed as most lithium batteries are now limited to between 75% to 150% maximum continuous discharge currents.

  8. #18
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    Start with reading the manual that comes with the battery..... it will let you know what you need to do, then just find a charger that does what the battery wants.....

    Keeping them at temp is relatively easy if you have the prior planning, nest them in a "dounut" water tank with insulation. keep your water tank reasonably full.
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  9. #19
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    Quote Originally Posted by Blknight.aus View Post
    Start with reading the manual that comes with the battery..... it will let you know what you need to do, then just find a charger that does what the battery wants.....

    Keeping them at temp is relatively easy if you have the prior planning, nest them in a "dounut" water tank with insulation. keep your water tank reasonably full.
    Dave, can you elaborate a bit more on this dounut water tank.
    Dave.

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  10. #20
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    I have just fitted a 100AH "cheapie" Lifepo4 to my newly acquired 2003 Coromal SEKA Pioneer 505 XL. It is a Voltax which I have seen a review of as actually being a100AH battery rather than the many 70AHs being sold as 100AH.

    It should supply for ever as it is only running the caravan lights and pump most of which I have changed to LED.

    I have removed the X7 charger and fitted a 10amp ac/dc charger ( Big Wei) which is for lithium batteries only and charges at 14.6V which is the specified charge rate for the Battery..It is just a Chinese charger but the one for my wife's buggy battery has performed well with the addition of some Jaycar alloy heat sink and conductive paste. The 10 amp one has a fan even!

    In addition I have fitted a Renolgy 20/20Amp DC/DC charger which is fed by an 8 SWL feed(and earth) from the car via a 2pin 50Amp trailer plug (Supercheap) . I will not use an Anderson Plug in this application as I have seen them pulled out by track centre vegetation.

    The circuit is controlled via a switch and relay connected to the accessory circuit to the original rear plug in the D2, so I can charge from solar from the second battery in the car if warranted by just turning the ignition switch to accessory. The feed is the main 4SWL feed from the second battery to the back of the car. I need plenty of amps as I have an Anderson Plug to run my 50amp compressor. The Anderson plug is located inside along with a Hella plug ( and 2USB )on top of the RH rear corner plastic trim above the air exit vent.

    The battery only has a max discharge rate of 50amps or 0.5c so is in Drivesafe's opinion not worth having but my potential draw is much less than that , although I cannot use a big inverter to run say a coffee machine or toaster.

    In any case even at 1c it would need another battery as an ALDI coffee machine uses 1500watts so over 1C and would need a 2000watt inverter.

    I am soon to buy and fit a fridge switch .

    I am still deciding whether to run the fridge from the van battery with a fridge switch in circuit, but the location of the wires is a bit of a mystery as yet and it is early days. Seeing it is winter I will leave that until later

    Next job is to sort the hoses on the two 80Lwater tanks which are joined in a very strange manner and do not have drains!

    Regards PhilipA

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