Battery Upgrade

Discussion in 'The Projects Forum' started by Metalmann, Feb 3, 2014.

  1. Metalmann

    Thread Starter Active Member

    Dec 8, 2012
    700
    223
    Been looking for a 12 V battery to power one of my nebulizers, especially during a storm.

    I was looking at a 7.2 Ah, the next page mentioned an upgrade to a 9 Ah battery.

    Have no idea how you upgrade a battery......?
    That just means that it's a totally different battery, right?
    Why don't they say, "Here is a longer lasting version".:confused:

    http://www.apexbattery.com/fullrive...atteries-fullriver-batteries.html#modal-outer


    Here is the original battery:

    http://www.apexbattery.com/fullrive...-lead-acid-batteries-fullriver-batteries.html


    I haven't yet found the schematics for the nebulizer.
     
  2. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    I use those types of battery.

    Various AH ratings in the same physical sized package.

    To be honest, I haven't noticed much difference. It may be just the old "ratings ploy".

    Yes, it's a different battery.
    "Upgrade" means "here's a better one for the same price."
     
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  3. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Actually, today "upgrade" usually means they are selling you something more expensive that they claim is better.... but buyer beware.

    In this case the upgrade is about 30% higher cost for an alleged gain of about 12% in A-hr rating.
     
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  4. burger2227

    Member

    Feb 3, 2014
    190
    24
    I'll be 65 soon so I ain't far behind you Inwo. AH means Amp Hours which means that a 1 amp load should last 7.2 hours before it needs charging. An increase from the old battery means less charging and more use.

    Since a battery is a voltage source, it cannot hurt your device unless it supplies more volts than your device needs and could harm it or drain it too fast. Since the device is rated 12 volts and the battery current hours are longer, it should be just fine!

    Ted
     
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  5. Austin Clark

    Member

    Dec 28, 2011
    409
    44
    http://www.apeximg.com/spec/D5779.pdf

    That's the datasheet for the battery in question.

    The part labeled "Shelf Life" brings up a question. Do they mean to say that the battery total capacity drops by about %60 in just a year? Or do they mean it discharges to %60 in a year?
    If it's the former, does it only lose that much capacity if it's left unused? Losing almost have the capacity in just a year sounds completely ridiculous to me.
     
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  6. burger2227

    Member

    Feb 3, 2014
    190
    24
    Of course and it doesn't even need to be hooked to anything. Leave your car sitting for a year and try to start it up. Hooked up the clock will wear it out.
     
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  7. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    It discharges that much. capacity should not change. However, sealed lead acid batteries are prone to internal sulphation if not used which can really kill capacity and battery life. They should be on a tender (maintenance charger) to prevent this.
     
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