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Road_Phantom's avatar
Road_Phantom
Explorer II
Jun 19, 2014

battery charging

I thought I'd like to buy the predator generator sold at Harbor freight to charge my trailer battery when camping at a non electric site. It's only $110. The only outlet on the unit is a standard plug receiver on one side. I'm wondering what is the best way to charge the batter. Do I use a 110 battery charger or is their a more direct way to do that.

7 Replies

  • wa8yxm's avatar
    wa8yxm
    Explorer III
    I too recall it as not being campground friendly and not something I would care to sleep near.

    Use a whatever your RV is to 15 amp pigtail, Set water heater, fridge and such to PROPANE (Gas) turn off air conditioners, do not even THINK about the microwave and that's the best way to do it.. Provided your little generator can power your converter.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    If I recall, that genny is a 2-stroke and loud. There are posts on the internet describing how to get them to run better out of the box. I would pass on it and save up and get a nice Champion inverter genny which is a great value for the money.
  • You can use an adapter to plug the RV into the generator and allow the converter to charge the battery.

    You could use a portable charger to charge the battery.

    Tell us what converter you currently have and what portable charger and we can tell which would require the shortest amount of time.

    Many will consider that generator excessively loud.
  • bikendan wrote:
    if you were boondocking, then it'd be fine but it's NOT an appropriate generator for a campgound with others nearby.


    I agree - that is not a generator that will make you any friends, but will make you plenty of enemies.
  • Road Phantom wrote:
    I thought I'd like to buy the predator generator sold at Harbor freight to charge my trailer battery when camping at a non electric site. It's only $110.


    you better hope you don't have any neighbors with that noise maker!:E:E

    if you were boondocking, then it'd be fine but it's NOT an appropriate generator for a campgound with others nearby.
  • RoyB's avatar
    RoyB
    Explorer II
    I use my 2KW Honda Type generator where the trailer SHORE POWER CABLE is connected directly to the generator 120VAC receptacle using a RV30A-15A adapter at 8AM each morning during breakfast. Then my ON-BOARD Smart Mode PD-9260C Converter/Charger can re-charge my 255AH Battery bank in a quick three hour generator run time to its 90% charge state.


    This will allow me to do this all over again for the next day/night run off my batteries. I can do around 12 or so 50% to 90% charge cycles before I must do a full 100% charge cycle which will take around 12 hours or so to run the generator. Otherwise I will harm my batteries.

    Three hours is about the minimun time you can re-charge a DEEP CYCLE Battery to its 90% charge state. You can use a stand alone smart mode battery charger like the Black and Decker VEC1093DBD 40AMP charger plugged into your generator and do the the same thing.

    The rule of thumb is to have 14.4VDC at around 18-20AMPS available DC Current for each 12VDC Battery in your battery bank if you want to re-charge in a quick three hour time span.

    This is what works great for me... I am usually at a camp site here on East side of the US that has generator run time restrictions in place so getting the batteries re-charged real quick when allowed to run my generator is what I have deal with each day.

    Roy Ken

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