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Old 04-16-2016, 02:38 PM   #1
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Speed charge?

Hello, I'm new to RV'ing as you can tell. I am going on a month long trip with the family (4 kids), and we will be doing a good bit of boondocking. My problem is that I only have one house battery with nowhere to install a second. So my 12v storage is tiny. I have the stock parallax 7300 charge controller, which will take forever to recharge the battery if I charge with my onboard generator.

This leads me to my question; can I start my generator, plug a speed charger in to my 120V outlet in my RV, and hook the leads to my battery for faster charging? Will this damage my charge controller? Any thing else I may damage?

Thanks for any input.

Ben
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Old 04-16-2016, 03:35 PM   #2
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Need to be careful with charge rate. Booteries can get damaged if charged too quickly.

You might consider solar
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Old 04-16-2016, 03:43 PM   #3
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What model/year RV do you have?
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Old 04-16-2016, 03:55 PM   #4
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Yes, you can use a 120volt battery charger off the gen to charge the battery--much faster than the charging outlet on the gen or the converter.
I would use a digital charger with auto controls to prevent overcharging...
Multiple deep discharges/recharges will ruin a conventional battery faster than normal cycles--be prepared for this one to go bad before long--with 6 people, there is going to be a lot of unintentional battery use, you can bet on it.
If there is no room for a 2nd battery, surely you can carry a spare somewhere.
Joe
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Old 04-16-2016, 08:07 PM   #5
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Most of our time is dry camping. (ATVing)
Do not know your situation.....
LEDs are your friend. We have 23 puck lights. Went to all LED now all can be lit with the power that use to be 5 lights.
Heater blower is not your friend... eats battery.
We cheat... (spring and fall) Honda (any, have on-board but do not need that much) 2000 watt generator carries heater well and a few gallons of gas keeps everything running.
And as wingnut 60 mentioned...
If you go that way, see if you can get the bolt on wire with the adapter instead of the spring clips. Better connection and no need to continuously check.
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Old 04-16-2016, 08:45 PM   #6
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Your converter is capable of up to 45 amp charging. I think you will have difficulty finding auto type charger with higher continuous rating. If you want better/faster, change out the existing converter for a good three stage converter with higher capacity.
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Old 04-17-2016, 05:57 AM   #7
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Quote:
Originally Posted by alvo View Post
What model/year RV do you have?
I have a 2005 Four Winds 5000.
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Old 04-17-2016, 06:00 AM   #8
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Your converter is capable of up to 45 amp charging. I think you will have difficulty finding auto type charger with higher continuous rating. If you want better/faster, change out the existing converter for a good three stage converter with higher capacity.
Yes, my converter is a 45 amp, dumb charger. If I upgrade to a smart, three stage converter charger, can I put in a higher amp one? Only reason I ask is because I found a good deal on a 55 amp smart charger.
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Old 04-17-2016, 06:29 AM   #9
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I swapped in a GoPower 55 amp smart charger.

Since it plugs in, I ran a short piece of romex from the converter breaker to a quick box and outlet. The original built in converter wire was removed from the breaker and tucked away. I can swap it back as a backup.


With that said, you can only push so much into a battery before it gassed excessively.

The smart charger is not going to let that happen, so you may not see big gains.

A "real" deep cycle 12 volt battery, although expensive, is the only way to increase capacity without adding batteries somewhere.
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Old 04-17-2016, 09:54 PM   #10
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Speed charge?

Had similar issues with my 2006 Four Winds 5000. After trying to conserve as much as possible I decided upgrade the components. Changed out bulbs to LED. Replaced Parallax 7300 with Progressive Dynamics 4600 direct replacement 4 stage converter. Went with a Trojan Deep Cycle AGM group 27. Solved all battery problems. Just run genny a couple of hours in morning and night and the PD 4600 puts out 14.6 volts in boost mold which quickly charges up the AGM battery.
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