Smart Battery Charger





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  1. #1
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    Default Smart Battery Charger

    In the market for a charger for my 105 Ah semi deep cycle battery.
    Short listed the following-

    Optimate 6 (5 Amp) - R1500
    Noco genius (7.5 Amp) - R2300
    Victron Blue Smart (15 Amp, has Bluetooth, Lithium compatible) - R2500

    Does the amperage matter? The higher the better?

    I really like the Victron as it's lithium compatible, but is 15 Amp bit of an overkill?

    What do you guys suggest?

  2. #2
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    Default Re: Smart Battery Charger

    Hi Teryos..

    I have a 15A Victron with 2 x 102 AH batteries on charge all the time....no problems.
    The batteries run 1x 82L Snomaster, 1x 52L National Luna , all the caravan lights and the water pump.
    The Victron copes very well with the load.
    Consider the Victron with the option to add another battery.

    Regards
    Louis
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  3. #3
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    Default Re: Smart Battery Charger

    Quote Originally Posted by tierboskat View Post
    Hi Teryos..

    I have a 15A Victron with 2 x 102 AH batteries on charge all the time....no problems.
    The batteries run 1x 82L Snomaster, 1x 52L National Luna , all the caravan lights and the water pump.
    The Victron copes very well with the load.
    Consider the Victron with the option to add another battery.

    Regards
    Louis
    Thanks Louis, I see Victron ticks few more important boxes than the other ones. Can you regulate the Amperage?

  4. #4
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    Default Re: Smart Battery Charger

    Teryos

    As far as I know the charger regulate the amps needed to charge the batteries.....the lower the battery volts etc.
    the more amps it will supply.
    The app on my phone shows the current status of the batteries and you will see the Volts and Amps supply.
    When in storage mode it supplies 13.4 volt and 0 amps.
    Louis Pretorius
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  5. #5
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    Default Re: Smart Battery Charger

    The higher the amperage the better. The battery and charger will self regulate the amps going into the battery.

    With eskom's blackouts last year a lot of people were caught out with low batteries, despite having good chargers, there simply was not enough time for the smaller chargers to put back enough charge - the 5 to 7.5 amp chargers.

    With a 15A charger you will probably find it charging at about 8 to 10A depending on battery make/chemistry etc. That is enough to make a big difference, the other plus is if you connect a bigger capacity battery later on or have multiple batteries.

  6. #6
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    Default Re: Smart Battery Charger

    I have the Optimate 6 (5 Amp) and its nothing special but maybe I expect to much from a smart charger. I want a charger that if I put a dead 10.2V battery on it it must be able to bring it back to life even if it must go through a 1000 cycles lol and the Optimate 6 cant do it.
    Last edited by Lofty; 2020/02/05 at 10:01 PM.
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  7. #7
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    Default Re: Smart Battery Charger

    Quote Originally Posted by Teryos View Post
    In the market for a charger for my 105 Ah semi deep cycle battery.
    Short listed the following-

    Optimate 6 (5 Amp) - R1500
    Noco genius (7.5 Amp) - R2300
    Victron Blue Smart (15 Amp, has Bluetooth, Lithium compatible) - R2500

    Does the amperage matter? The higher the better?

    I really like the Victron as it's lithium compatible, but is 15 Amp bit of an overkill?

    What do you guys suggest?
    To explain it as I understand.

    If you buy a eg 15amp charger and the battery needs 30amps to charge full. Then the battery will take twice as long to charge. If you buy a 5amp charger then the battery will take 6 times longer and you won't be pushing the limit on your charger. As been mentioned, the battery will determine what current it needs to charge at. Bigger charger current delivered, less charge time of battery.
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  8. #8
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    Default Re: Smart Battery Charger

    Thanks guys for your input. One question. I understood these are AC to DC charger to charge battery at home when the battery is not being used. However, can these chargers be used in car? What's the use of the cigarette lighter connector that comes as an accessory?

  9. #9
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    Default Re: Smart Battery Charger

    No they cannot. For this you need a dc/dc charger. The 12v accessory plug in cars is for low current drawing items.
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