What's the best way to charge the batteries?

Discussion in 'Tech/Mech General' started by Teasy2007, Mar 29, 2015.

  1. Teasy2007

    Teasy2007 Funster

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    Mike has to use an Oxygen Concentrator but we don't want it to affect the rallies where we don't have hookup.

    Could anyone suggest a solution?

    Specifications Inogen One G3 Portable Oxygen Concentrator

    Width: 8.75” Height: 7.25” Depth: 3” Weight: 5.9 lbs ( 2.7 KG) with 16 cell battery.

    Oxygen Dose Method: Pulse.

    Oxygen Maximum Output: 840 mL. Oxygen Outlet Pressure:

    Oxygen Concentration: 90% -3% / + 6% at all settings.

    Noise: 42 dBA.

    Average Power Consumption: 40W.

    Power Requirements: Universal Power Supply: AC Input: 100 to 240 VAC, 50 to 60 Hz, Auto-Setting: 1.0A DC Input: 13.5-15 VDC, 10A. DC Output: 19VCD, 5.0A max.

    Rechargeable Battery: 12V to 16.8V 8 Cell Battery Life (Setting 2): 4 hours.

    16 Cell Battery Life (Setting 2): 8 hours.

    This is the specifications of the oxygen concentrator, perhaps someone who is a lot more savvy than we are can tell us which generator would be best??

    Thanks, Ginny and Mike
     
  2. Peter A Forbes

    Peter A Forbes Funster

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    There seems to be two distinct DC power options, three if you include the mains adapter.

    What isn't clear is the battery configuration of the 8-cell (nominal 16Volts) or the 16-cell (nominal 32V) batteries.

    Which batteries does it have included with it, and how do you power it now?

    Peter
     
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  3. hilldweller

    hilldweller Funster Life Member

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    DC output 19V 5A max is less than 100W max. ( just the same as a laptop ).

    A 1kw genny is 10 times that so you'd run that for one tenth the medical running time provided you have the appropriate charger fitted.

    How many hours does he use it a day ? Is it setting 2 ?
     
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  4. mjltigger

    mjltigger Funster

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    You're going to need a power source (batteries) to charge from using dc would be better but otherwise with an inverter then you're going to need a method of charging that power source - anything from a split charge relay so you run the van engine through b2b on to solar then I would say as its critical I would want to carry a backup power source such as a generator.
     
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  5. Peter A Forbes

    Peter A Forbes Funster

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    Looking at the website, the batteries are classed as single or double, so the 16-cell battery is double the capacity of the single battery and the same voltage.

    The DC power cable and AC adapter suggest that the unit will run from 12V, so a standard car battery and charger should run the unit independently from the internal battery, and the type of connectors use suggest fairly low current.

    I'd look at a decent quality 12V leisure battery and some means to charge it up, either through a generator, B2B charging from the vehicle or EHU.

    Peter
     
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  6. Teasy2007

    Teasy2007 Funster

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    He is supposed to use it for 15 hours a day on setting 2.

    Ginny
     
  7. Teasy2007

    Teasy2007 Funster

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    We have only used it on 240 so far.

    Ginny
     
  8. Wildman

    Wildman

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    you are looking at around 8amps per hour x 15 = 120 amp/hrs NOTHING will put that amount of power back in the batteries when you are static with reliability other than a generator.
     
  9. funflair

    funflair Funster Life Member

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    The spec says average consumption 40 watts so isn't that less than 4 amps from the 12 volt system ?.
     
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  10. Wildman

    Wildman

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    I was going on Hilldwellers figures. Even so that then equates to 60 amp/hrs and my answer is still valid.
     
  11. DBK

    DBK Funster

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    I agree a genny is the best solution although a B2B charger is an option but having a genny means you have a backup for use at home in power cuts.

    The genny should be running very lightly loaded so should be quiet and for reliability and quietness I think it also needs to be a Honda, especially if it has to be run at night. I would use it with an inverter. One with say 150W capacity won't be expensive.
     
  12. hilldweller

    hilldweller Funster Life Member

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    >> This is the specifications of the oxygen concentrator, perhaps someone who is a
    >> lot more savvy than we are can tell us which generator would be best??

    Well you are stuck with a 1kW jenny and Honda is best.

    But you don't want to run it for 15 hours under a tiny load.

    You need to run the mechanical lung from your leisure battery and top that up twice a day.

    How do you run it off your battery ?
    1. Via a small inverter as already said.
    2. Via a DC power lead as specified above, which is the best way if you have it.

    Next questions:

    1 Do you have the DC Input 13.5V lead/adaptor ?
    2 What is the spec of your leisure battery/batteries ?
     
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