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hertfordnc's avatar
hertfordnc
Explorer
Jun 01, 2017

gel cell chargging questions

I got a really good deal on a pair of new 100 amp gel cells (AlphaCel 195 GXL)

I was going to get a pair of golf cart batteries but these came along for $60 ea.

Our summer trip to northern Maine will include 3-4 days dry camping followed by a few hours of driving followed by another 3-4 days dry camping.

My hope is to replenish the batteries on the driving days but reading about gel cells I'm not so sure.

Can I just run a wire from the 7-pin to charge off the alternator?

Or should I run a smart charger through an inverter?

Our power consumption will be the LP heater, water pump, lights and assorted device charging.

Thanks
  • MrWizard wrote:

    And I suspect that a few hours charge time will not replaced 3 nights of heater blower power use


    Based on what I'm hearing here, I'm thinking an AC charger off the inverter might be the best option.

    Schumacher has 15 charger with a gel setting for cheap.
  • wa8yxm wrote:
    Gel Cell batteries are generally NOT the first choice for RV use... Different batteries "Eat" differently (Charge)


    I'm beginning to understand that but i got 200 amps for $120 so I figure I'll educate myself and mitigate the problems.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Gel Cell batteries are generally NOT the first choice for RV use... Different batteries "Eat" differently (Charge)

    Flooded wet cell can be rather forgiving because if you charge too fast or too much it "Boils" (Actually it's not really boiling) off water, and you can repace distilled water easily. Maintenance free are not as forgiving, generally, because.. Well. you can't replace.

    AGM's are also more forgiving.

    But GEL's.. Oh man do you need to baby those suckers.. Too much voltage or current and they are toast. and fast.
  • rjxj my comments were in general, in the specialized information on that specific type I defer to your data,
  • This is from battery stuff .com

    "Gel Cell Batteries are typically a bit more costly and do not offer the same power capacity as do the same physical size AGM battery. The Gel Cell Battery excels in slow discharge rates and slightly higher ambient operating temperatures. One big issue with Gel Batteries that must be addressing is the GEL CHARGE PROFILE. Gel Cell Batteries must be recharged correctly or the battery will suffer premature failure. The battery charger being used to recharge the battery(s) must be designed or adjustable for Gel Cell Batteries. If you are using an alternator to recharge a true Gel Cell a special regulator must be installed.

    If you are unsure which battery or charger is best for your application, please call or email our tech people for help making the correct selection"
  • my first thought would be, run a quality charger with a GEL setting from a generator, second thought same charger from an inverter

    Gel batteries can not take high current or be allowed to heat up during charging

    Try to find the specific charge settings for your new batteries
    And I suspect that a few hours charge time will not replaced 3 nights of heater blower power use
  • Hard to know what to expect until you review the charging specifications.
  • pin 4 should already be setup to do that. check your battery voltage with the TV off, should be around 12.5, then start TV and with trailer plugged in voltage should go up by a volt or more. If it doesnt your TV may have a blown fuse.
    sorry just saw class a qx. but same thing applies. your chassis should recharge house and voltage checks with engine off and running is your key.

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