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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > dry docking and charging

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philh

Belleville MI

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Posted: 06/26/20 07:38am Link  |  Quote  |  Print  |  Notify Moderator

Vintage465 wrote:


And a real gauge, make sure you don't take your battery bank down lower than 60%.

Is that still true for GC2? I understood them to be able to go a lot lower.

ajriding

st clair

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Posted: 06/26/20 08:02am Link  |  Quote  |  Print  |  Notify Moderator

While the gen is putting a 12DC charge on the battery whatever DC charge gauge you are reading will read full, this is because the generator is putting full voltage on the battery and the gauge sees this as a full battery, remove the generator and your battery will go back to only a partially charged voltage and this will show on the gauge, but sometime there is a "surface charge" that will sit on the battery, some kind of electrical mystery, but that surface charge will go away after just a very short time of using lights, within minutes.

The generator probably only provdes very minimal DC power (amps), so will take a very very long time/ multiple tanks of gas to recharge two low batteries.
Better to plug a good battery charger into the AC plug of the generator and charge the batteries off the charger.

Solar is really the way to go. You batteries will last a year or two longer, maybe 3 or 4 years longer since you are hard on them running them down like you described. 100 watts will suffice and 200 watts is plenty. They key here is the charge controller (takes current from the solar panels and controls what goes to the battery). MPPT is what you want not the $20 ebay one, but at least $50 range will do. 20-30 amp model is enough for what you describe. You batteries will be topped off nearly all the time.

ppine

Northern Nevada

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Posted: 06/26/20 09:37am Link  |  Quote  |  Print  |  Notify Moderator

If you have conventional wet cell batteries, you never want to run them down. Use your charging system every day and keep them up.

Lwiddis

West & above Bishop, California

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Posted: 06/26/20 12:38pm Link  |  Quote  |  Print  |  Notify Moderator

"I have no idea if the performance that I have seen is typical,.."

ssthrd, sounds to me that you have a very adequate solar system doing what it is supposed to do.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


Lwiddis

West & above Bishop, California

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Posted: 06/26/20 12:42pm Link  |  Quote  |  Print  |  Notify Moderator

"Is that still true for GC2? I understood them to be able to go a lot lower."

Your choice how low you go, philh. The lower you go the fewer cycles you'll get. See the Trojan cycle chart at

https://www.trojanbattery.com/products/deep-cycle-flooded/signature-line-flooded-2/

Cycle to a 60% discharge you'll get 1,000 cycles.
Cycle to a 40% discharge you'll get 1,500 cycles.

2oldman

New Mexico

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Posted: 06/27/20 09:22am Link  |  Quote  |  Print  |  Notify Moderator

OP is gone.

guscampag

Ohio

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Posted: 06/27/20 01:06pm Link  |  Quote  |  Print  |  Notify Moderator

Sounds like my best bet is to go with a couple of solar panels. I was thinking about doing that but didn't think I would really need them since I had the generator. Renogy 200 W suitcase panel is on my list.
Im only have the 1/3 - 2/3 "battery gauge" and I think I have a cheapo convertor. Hopefully I won't need to change these right away. The suitcase panel comes with a Voyager controller. I have (2) of the 6 volt Trojan batteries which are very new.
thanks for all the suggestions.

* This post was edited 06/27/20 01:31pm by guscampag *

Boon Docker

Mountain Foothills of Southern Alberta

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Posted: 06/27/20 01:16pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

OP is gone.

I didn't see him leave. [emoticon]

2oldman

New Mexico

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Posted: 06/27/20 01:16pm Link  |  Quote  |  Print  |  Notify Moderator

guscampag wrote:

Sounds like my best bet is to go with a couple of solar panels..
You haven't answered any questions.

ajriding

st clair

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Posted: 06/29/20 08:32am Link  |  Quote  |  Print  |  Notify Moderator

Yes, solar.
The generator is really just for running the AC when boondocking, otherwise leave it home (unless there is no sun where you are). The solar will do the bulk of the work.

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