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Old 09-24-2020, 02:15 PM   #1
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Batteries ????

2014 Sunseeker 3010DS
Dual Trojan wetcell deep cycle battery,s.
Group 27
Battery,s will not come to a full charge.
70-75%
This just started a few days ago. Have never had this type of problem. Could go 2-3 days before needing to run gen set.
Last night there was what seemed like more than normal drain on them. Only things on were the fridge 2 lights (LED)
And a small 12v cooler that I have used for years3-4 amp draw.
Have good voltage from converter ,from solar Panels and alternator while driving.
Checked all cells with hydrometer. All check good.
All battery cable connections and cables good.

I thought for sure it was a bad battery. But they check out good.
Iím at a loss to find anything thatís bad or causing it. Maybe all the forum brain power can help!!
Thanks for your time.
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Old 09-24-2020, 03:10 PM   #2
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Quote:
Originally Posted by Kevin & Judy View Post
2014 Sunseeker 3010DS
Dual Trojan wetcell deep cycle battery,s.
Group 27
Battery,s will not come to a full charge.
70-75%
This just started a few days ago. Have never had this type of problem. Could go 2-3 days before needing to run gen set.
Last night there was what seemed like more than normal drain on them. Only things on were the fridge 2 lights (LED)
And a small 12v cooler that I have used for years3-4 amp draw.
Have good voltage from converter ,from solar Panels and alternator while driving.
Checked all cells with hydrometer. All check good.
All battery cable connections and cables good.

I thought for sure it was a bad battery. But they check out good.
Iím at a loss to find anything thatís bad or causing it. Maybe all the forum brain power can help!!
Thanks for your time.
well i'm usually no help at all, but 2 questions: 1. age of batteries and 2. ambient temperature (did it just turn cooler where you are or are you in the Florida location?)
my 2 cents,
bw
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Old 09-24-2020, 04:58 PM   #3
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The battery,s are 15 months old. Still in temp range of 45 night 75-80 days.
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Old 09-24-2020, 06:52 PM   #4
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The battery,s are 15 months old. Still in temp range of 45 night 75-80 days.
i would find a way to measure the draw on the batteries. my ems has an amp readout but you may need a meter in series with a lead from the battery to the coach. maybe there is a new draw you don't know about. if you can, disconnect and charge separately to see if the batteries can achieve higher than 70-75% without the draw of the coach. have to take something out of the equation to split the problem into smaller pieces.
my other 2 cents... i'm out of cents!
hope you find it! somebody on here will have better suggestions.

bw
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Old 09-24-2020, 07:55 PM   #5
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15 months is not long for a pair of Trojan 27ís. However, we do not know how they were treated. Watered, smart charger with equalization, never drained below 12.2V (50-60%). If stored, were they fully charged...

If all of the above is not true then they could be depleted.
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Old 09-24-2020, 08:30 PM   #6
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45 degrees.

Run the furnace? Itís a killer.
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Old 09-25-2020, 08:49 AM   #7
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They have been kept on charge and fluids always to level.
Have not been in storage. Motor home is always plugged in.
Have not used the furnace. Space heater.
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Old 09-25-2020, 09:47 AM   #8
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clarity

Can you clarify please:

could go 2-3 days before needing to run genset
and
motorhome is always plugged in

Meanwhile, solar was just thrown into the equation.
So now there are two charger components that could be at issue. The on board battery charger which is unknown and the solar controller, another unknown.

So if your boost voltage is too low and or you have no Equalization phase,
there is nothing that prevents battery stratification & sulfation. If that is the case that could explain what happened to your batteries.
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Old 09-25-2020, 09:55 AM   #9
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I would remove the batteries from the coach and put them on a charger, separate from the rig. This will help you to isolate the issue. (Converter, batteries, or load)
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Old 09-25-2020, 10:02 AM   #10
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I'm asking my electrical team to see what they think? personally it sounds like bad batteries, but getting second opinion.
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Old 09-25-2020, 11:22 AM   #11
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At this time batteries are out and checking them further.
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Old 09-25-2020, 11:31 AM   #12
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At this time batteries are out and checking them further.
Good plan. Donít Trojans have a 24 month warranty?
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Old 09-25-2020, 01:58 PM   #13
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Quote:
Originally Posted by Kevin & Judy View Post
2014 Sunseeker 3010DS
Dual Trojan wetcell deep cycle battery,s.
Group 27
Battery,s will not come to a full charge.
70-75%
This just started a few days ago. Have never had this type of problem. Could go 2-3 days before needing to run gen set.
Last night there was what seemed like more than normal drain on them. Only things on were the fridge 2 lights (LED)
And a small 12v cooler that I have used for years3-4 amp draw.
Have good voltage from converter ,from solar Panels and alternator while driving.
Checked all cells with hydrometer. All check good.
All battery cable connections and cables good.

I thought for sure it was a bad battery. But they check out good.
Iím at a loss to find anything thatís bad or causing it. Maybe all the forum brain power can help!!
Thanks for your time.
I think the batteries should be individually load tested.
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Old 09-25-2020, 02:06 PM   #14
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IN the original post you mention that they will not come up past 70-75%

How are you determining this percentage? and what voltage does this mean?

What is the open circuit ( disconnected batteries) voltage using a multi-meter?
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Old 09-26-2020, 08:58 AM   #15
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That percentage is from my solar battery monitor. The voltage is 12.4

The voltage was at 12.78 and 12.83.
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Old 09-30-2020, 03:53 PM   #16
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Had both battery,s load tested. They both checked good.
Checked my intella power charger. It is putting out 13.6 V disconnected from the main wiring.
They say that is normal.
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Old 09-30-2020, 04:03 PM   #17
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Batteries ????

I would put the batteries on a house charger and if they came up to charge, I would suspect the converter.
Check the wires on the converter for tightness and if they look green, remove and clean.
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Old 09-30-2020, 04:07 PM   #18
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That is what I have. Progressive dynamics intella power 4 stage charger.
It replaced the WFCO about 4 years ago.
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Old 09-30-2020, 04:14 PM   #19
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Batteries ????

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That is what I have. Progressive dynamics intella power 4 stage charger.
It replaced the WFCO about 4 years ago.


Do you have the charge wizard? If so, place the converter into fast mode. That is supposed to send 14+ volts for faster charging.


https://www.progressivedyn.com/rv/ch...charge-wizard/
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Old 09-30-2020, 04:26 PM   #20
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Quote:
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That percentage is from my solar battery monitor. The voltage is 12.4

The voltage was at 12.78 and 12.83.
Quote:
Originally Posted by Kevin & Judy View Post
Had both battery,s load tested. They both checked good.
Checked my intella power charger. It is putting out 13.6 V disconnected from the main wiring.
They say that is normal.
13.6 volts from a converter disconnected from the battery is pretty normal and would indicate that it's capable of delivering a full charge..

Where did the 12.78 and 12.83 volts come from? If from the individual batteries while disconnected and having sat for at least a few hours, that would indicate to me that they are fully charged.

I'd disconnect the solar controller (panels first then controller) from the system and diagnose one system at a time. From what has been written good batteries should be able to be charged fully with your converter.

If that checks out then switch off converter, reconnect solar system (batteries first) and see if it will deliver a full charge with good sun.

Basic diagnostics-------One thing at a time.
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