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Old 01-14-2016, 04:07 PM   #1
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Trojan 105, 125 or 145 6volt

I have 4 6 volt batteries in my camper but the are the cheapest batteries the dealer could find. I think there are 105amp hour. I am going to replace the four with four Trojans, do you think it would pay the difference between T-105 or the higher ones. The T-105 has 225amp hr and the T-125 is 240amp hr and the T-145 is 260amp hr. They are the same size but the T-145 is a inch or so taller. The more amp in the battery the more it weighs


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Old 01-14-2016, 04:13 PM   #2
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Old 01-15-2016, 12:02 AM   #3
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If you upgrade you may wish to consider upsizing the charger to a higher capacity.

If that isn't an option for you, consider splitting the 2 6v batteries into separately switched banks. That way you can charge one bank at at time.
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Old 01-15-2016, 02:04 AM   #4
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I have two T105's. I have found that without interim charging, I only have enough power for a couple / maybe 3 days. I don't use my; heater, AC or microwave. I have a mr. buddy to get through the night. I am looking to get either 2 more batteries or a 2k gen/inverter to make sure, I can replenish my power storage so I can last a week. Remember we/I can only use half of the 225ah.
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Old 01-15-2016, 05:01 PM   #5
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Quote:
Originally Posted by spock123 View Post
I have 4 6 volt batteries in my camper but the are the cheapest batteries the dealer could find. I think there are 105amp hour. I am going to replace the four with four Trojans, do you think it would pay the difference between T-105 or the higher ones. The T-105 has 225amp hr and the T-125 is 240amp hr and the T-145 is 260amp hr.
The difference for each upgrade is 15 - 20 useable AH. If you are really frugal, you can get by on 20AH per day, which gains you another day without recharging. More typical use is 30+AH/day, in which case you would gain a full day only if you went up to the T-145 compared to the T-105.

Key to the decision is a good, realistic estimate for AH used per day, and your plan for recharging.

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Sized to run 4 nights (extended weekend) with heater (4 amps) on max 5hrs/day. LED interior lights, fridge is continuous run propane (no control board). Recharging to be done by plugging in at home or at next campground.
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Old 01-15-2016, 06:27 PM   #6
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How big is your charger and does it have the capacity to take on more duty ...Do you run a generator to keep it going? Are you running a 120V fridge? Do you have a battery monitor and know how many amp hours you are pulling a day?
Of course more amp hours is better... but my experience is that you can often get T105's at a better price PER AMP HOUR than some of the other sizes. Indeed...Trojans, while excellent batteries, many not be the right choice if you don't plan on keeping this RV for the extra hundreds of cycles they may deliver since others may be capable of delivering the life cycles you need at a lower cost per amp hour DELIVERED over the life cycle.
Good luck with the decision process.
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Old 01-16-2016, 01:19 AM   #7
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Trojans

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Originally Posted by spock123 View Post
I have 4 6 volt batteries in my camper but the are the cheapest batteries the dealer could find. I think there are 105amp hour. I am going to replace the four with four Trojans, do you think it would pay the difference between T-105 or the higher ones. The T-105 has 225amp hr and the T-125 is 240amp hr and the T-145 is 260amp hr. They are the same size but the T-145 is a inch or so taller. The more amp in the battery the more it weighs


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We have 2 Trojan T-105s and swear by them. Locally I can buy them for $105. The only downside is we have is the WFCO converter in our 2015 Wildwood struggles to charge them so I made a way that I can easily put a powerful battery charger on them and then my Yamaha generator charges them properly.

I plan to replace the WFCO converter with a Progressive Dynamics converter soon. The T105s are awesome!
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Old 01-16-2016, 04:05 PM   #8
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We have 2 Trojan T-105s and swear by them. Locally I can buy them for $105. The only downside is we have is the WFCO converter in our 2015 Wildwood struggles to charge them so I made a way that I can easily put a powerful battery charger on them and then my Yamaha generator charges them properly.

I plan to replace the WFCO converter with a Progressive Dynamics converter soon. The T105s are awesome!

I ordered a Progressive Dynamics 70amp converter today


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Old 01-16-2016, 04:39 PM   #9
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Another option to consider is Lifeline AGM's. They are a touch better than Trojans and allow more installation options as they don't need to be vented like a traditional wet cell does. Their smallest 6V are 220AH and go up from there. Lifeline Batteries - Marine & RV Deep Cycle Batteries

Not cheap but the best never is.
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Old 01-16-2016, 06:08 PM   #10
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I can't afford the AGM batteries. Now later on I plan to maybe look at putting another bank of batteries in and then I would put the AGM batteries in


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Old 01-17-2016, 10:16 AM   #11
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Go Solar

Go solar and use the lower capacity battery. It is quiet, and very convenient. We have a 21 ss Roo. We love to boondock away from other campers. I bought a flexible 100 watt panel and glued it to the roof with silicone caulking. I did this on my last camper and ended up selling the panel with the camper, because it was too difficult to remove. I read this blog https://handybobsolar.wordpress.com/...ging-puzzle-2/ and if you slog through it, it tells you everything you need to know. I installed 8 ga. wires from the panel to a fuse box & then to a Morningstar SHS 10 charge controller, then 8 ga. wires to the battery. If you use an oversized controller and you can upgrade the system later if you think you need to. I have the two standard 12v deep cycle batteries that came with the trailer and bought LED replacement bulbs on eBay for less the $40. We can run everything but the AC and Microwave forever without outside power. The entire system cost less than $300. If we wanted to run the microwave, we could probably do short (5 min) runs (using an inverter) with our system, but I donít really need it. We use sleeping bags at night because I hate the noise of the heater going on in the middle of the night. It is still dark when I wake up, and Iíll run the furnace for 30 minutes or so to warm the trailer in the morning. By the time my wife wakes up, the sun is up, and she can run the furnace as long as she wants. The controller shows the battery is charged to 100% before noon (I donít have a good monitor yet, so I really donít know). We have never run it down below 75%, which radically improves battery life. One caveat: We live in New Mexico where the sun always shines. But I find that even with cloud cover for several days, the system works fine for us. Iíve hauled a Honda 2000 along on our first 4 trips, but never used it, and that is just fine with me. In the off season, it takes care of itself, and always keeps the batteries charged. Life is good.
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Old 01-17-2016, 03:11 PM   #12
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I have all led lights in camper but there is no way I'm going to get DW in a sleeping bag. We have to use the furnace at night when it gets cold and daytime too if it gets real cold. DW is just not into dry camping much. For right now I plan on getting the Trojans, the T-145, four. I already have a 2500 watt inverter that I plan to hook the Trojans to a 110volt 40amp charger to charge the batteries with. I think I can use the battery disconnect on the camper to turn the house system off and then plug the camper into the 2500 watt inverter. We plan to maybe stop at Walmart once in awhile. If I have to have a/c then I'll get out my Honda's


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Old 01-17-2016, 04:04 PM   #13
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For right now I plan on getting the Trojans, the T-145, four. I already have a 2500 watt inverter that I plan to hook the Trojans to a 110volt 40amp charger to charge the batteries with.
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You're gonna charge a 520 amphour bank with a charger that supplies 7.5% of capacity???? Suggest that around 100 amps is what you need for shortest charge time. If you charge when you are at 50% you will need to replenish 260 amp hours... that is 10-12 hours of generator run time for full charge.
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Old 01-17-2016, 05:15 PM   #14
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I don't plan on dry camping that much, I'll just charge the extra bank of batteries up on shore power


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Old 01-17-2016, 06:06 PM   #15
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That'll work!
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Old 01-18-2016, 09:19 AM   #16
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I only have a 40amp battery charger and it's a 3 stage charger, I can't afford to buy another charger. But this question, could I have 6 6volt batteries hooked up together to make 12 volts?


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Old 01-18-2016, 09:33 AM   #17
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I only have a 40amp battery charger and it's a 3 stage charger, I can't afford to buy another charger. But this question, could I have 6 6volt batteries hooked up together to make 12 volts?


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Yes... 3 pairs...each pair wire to the other + to - (series) to form 1 12V battery.
Then wire each pair to the next pair in parallel + to + & -to -

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Old 01-18-2016, 10:50 AM   #18
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I found the answer about hooking up the batteries, I think I can buy 6 T-105 cheaper than 4 T-145 plus I'll have more amps


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Old 01-18-2016, 11:13 AM   #19
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Yes... 3 pairs...each pair wire to the other + to - (series) to form 1 12V battery.
Then wire each pair to the next pair in parallel + to + & -to -


Thanks for the diagram, your diagram shows the correct way to hook up the batteries. It also shows the correct way to hookup the bank of batteries to the inverter. I was wrong I thought you could hookup to any post.


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Old 01-18-2016, 05:16 PM   #20
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I saw a YouTube video that was talking about batteries and it showed a Trimetric TM 2025 monitor for the batteries. I like that monitor, I just have to learn more about it and how to hook it up.


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