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  1. #41
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by Orxy View Post
    Ok, set as per the specs, and pushed the Low Battery to 47V
    Which firmware is your (5year old?) Axpert running on?
    There is a well known 'float bug' with earlier Voltronics inverter / chargers, which results in the higher voltage absorbtion charge cycle being very short or skipped all together.
    Due to the seemingly poor performance of all 4 of your Victron gel batteries (as per Prof's charging spec sheet) I will say this could be due to incorrect charge settings, or the bug.

    Then dont forget that series battery connections such as yours, multiply voltage and not capacity (110Ah)
    110*12v = 1320Wh
    350w*(107min/60) = 624Wh
    624/1320= 47% DoD

    In 2 hours of load shedding with a 350w load, you are cycling your batteries past 50% - it seems you need more battery capacity to prevent premature battery failure.

  2. #42
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by rnieckau View Post
    Which firmware is your (5year old?) Axpert running on?
    There is a well known 'float bug' with earlier Voltronics inverter / chargers, which results in the higher voltage absorbtion charge cycle being very short or skipped all together.
    Due to the seemingly poor performance of all 4 of your Victron gel batteries (as per Prof's charging spec sheet) I will say this could be due to incorrect charge settings, or the bug.

    Then dont forget that series battery connections such as yours, multiply voltage and not capacity (110Ah)
    110*12v = 1320Wh
    350w*(107min/60) = 624Wh
    624/1320= 47% DoD

    In 2 hours of load shedding with a 350w load, you are cycling your batteries past 50% - it seems you need more battery capacity to prevent premature battery failure.
    I think you need to relook at your calc. The 4 batteries have 5200Wh to 100% DOD. Thus 350x2hours=700Wh of the 5200Wh. Nowhere near 50% DOD.

    This is a 48V system not 12V.
    Last edited by ekkekan; 2021/06/13 at 06:01 PM.

  3. #43
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by ekkekan View Post
    I think you need to relook at your calc. The 4 batteries have 5200Wh to 100% DOD. Thus 350x2hours=700Wh of the 5200Wh. Nowhere near 50% DOD.

    This is a 48V system not 12V.
    Quite right! (forgot to multiply the voltages....)

  4. #44
    Join Date
    Jan 2020
    Location
    Pretoria
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    Thanked: 1

    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by Orxy View Post
    Hi everyone,

    Last year in Feb the 4 x Deltec batteries that I installed with my 5kVA inverter in 2015 finally started dying.

    I then bought 4 x Victron Gel 12V-110Ah batteries, which have been perfect until now, when suddenly I started getting Low Battery Voltage alarms barely an hour into loadshedding, and with only a load of 200-300W.

    Surely these batteries should be lasting a lot longer than this? The claimed lifetime is 7 years, so did I waste R16K last year?

    Should I just bite the bullet and go LiIo?

  5. #45
    Join Date
    Jan 2020
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    Pretoria
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    Thanked: 1

    Default Re: Lifetime of Victron batteries

    Yoi can revive the batteries by useing an old charger-charge at 15 volt 6 hours a day for a week.
    You should get 70% of the battery back

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  7. #46
    Join Date
    Feb 2009
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    Pretoria
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    45
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    Thanked: 1022

    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by rnieckau View Post
    Which firmware is your (5year old?) Axpert running on?
    There is a well known 'float bug' with earlier Voltronics inverter / chargers, which results in the higher voltage absorbtion charge cycle being very short or skipped all together.
    Due to the seemingly poor performance of all 4 of your Victron gel batteries (as per Prof's charging spec sheet) I will say this could be due to incorrect charge settings, or the bug.

    Then dont forget that series battery connections such as yours, multiply voltage and not capacity (110Ah)
    110*12v = 1320Wh
    350w*(107min/60) = 624Wh
    624/1320= 47% DoD

    In 2 hours of load shedding with a 350w load, you are cycling your batteries past 50% - it seems you need more battery capacity to prevent premature battery failure.
    Post 20. My point exactly. It still is only 110Ah capacity which is not enough for this setup.
    Last edited by Die SwartKat; 2021/06/14 at 09:23 AM.
    Nico Swart

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  8. #47
    Join Date
    Feb 2016
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    Default Re: Lifetime of Victron batteries

    Thanks everyone for your input.

    I've been in touch with a few suppliers, and looking at Pylontech, Dyness, FreedomWon, and maybe even get rid of the current setup for a Tesla Powerwall.
    2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
    2015 Range Rover Sport Supercharged V8 HSE Dynamic



    Discovery 4 Workshop Manual: https://bit.ly/2zZ1en9

    Defender Puma Workshop Manual: https://bit.ly/2zXrtKO
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  9. #48
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    Feb 2016
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    Default Re: Lifetime of Victron batteries

    Has anyone got experience with these: https://dcpwr.co.za/wp-content/uploa...11/Battery.pdf ?

    2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
    2015 Range Rover Sport Supercharged V8 HSE Dynamic



    Discovery 4 Workshop Manual: https://bit.ly/2zZ1en9

    Defender Puma Workshop Manual: https://bit.ly/2zXrtKO
    Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

  10. #49
    Join Date
    Oct 2013
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    Centurion
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by Orxy View Post
    Thanks everyone for your input.

    I've been in touch with a few suppliers, and looking at Pylontech, Dyness, FreedomWon, and maybe even get rid of the current setup for a Tesla Powerwall.
    Well the Power Wall is great but the 14kWh battery with all the goodies @ R146 000 is a bit of money.

  11. #50
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by ekkekan View Post
    Well the Power Wall is great but the 14kWh battery with all the goodies @ R146 000 is a bit of money.
    I think you mean R183k fully installed.

    Not cheap, but my best friend (in Parkhurst) had one installed and he can't stop raving about it.

    My only reluctance to spend this kind of money now is that we're semigrating as soon as we can travel again, so will only be in ZA for 6-4 months of the year, so a bit of a pointless capex.
    2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
    2015 Range Rover Sport Supercharged V8 HSE Dynamic



    Discovery 4 Workshop Manual: https://bit.ly/2zZ1en9

    Defender Puma Workshop Manual: https://bit.ly/2zXrtKO
    Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

  12. #51
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    Oct 2013
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by Orxy View Post
    Has anyone got experience with these: https://dcpwr.co.za/wp-content/uploa...11/Battery.pdf ?

    Recommended discharge is only 2880W. Some other batteries allow 4800W discharge. What is the price for the 7.5kwh battery?

  13. #52
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by ekkekan View Post
    Recommended discharge is only 2880W. Some other batteries allow 4800W discharge. What is the price for the 7.5kwh battery?
    10kWh battery: R48300
    7.5kWh battery: R36230
    (VAT inc)
    2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
    2015 Range Rover Sport Supercharged V8 HSE Dynamic



    Discovery 4 Workshop Manual: https://bit.ly/2zZ1en9

    Defender Puma Workshop Manual: https://bit.ly/2zXrtKO
    Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

  14. #53
    Join Date
    Oct 2013
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    Default Re: Lifetime of Victron batteries

    Quote Originally Posted by Orxy View Post
    I think you mean R183k fully installed.

    Not cheap, but my best friend (in Parkhurst) had one installed and he can't stop raving about it.

    My only reluctance to spend this kind of money now is that we're semigrating as soon as we can travel again, so will only be in ZA for 6-4 months of the year, so a bit of a pointless capex.
    No I only meant the PowerWall price. Install varies per home. I know how I would spend the R183 000
    Last edited by ekkekan; 2021/06/14 at 06:14 PM.

  15. #54
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    Nov 2015
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    Edenvale
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    Default Re: Lifetime of Victron batteries

    Try this website for good prices on Lithium batteries/inverters www.mhn.co.za
    2019 Ford Ranger XLT Auto DC 2.0

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