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 > Leave Unit plugged into A/C to keep battery charged?

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Bumpyroad

Virginia

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Posted: 10/12/17 04:08pm Link  |  Quote  |  Print  |  Notify Moderator

I keep a multi stage marine charger hooked directly to the battery and have it on a timer so it just comes on for a short period each day.
bumpy





time2roll

Southern California

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Posted: 10/12/17 04:11pm Link  |  Quote  |  Print  |  Notify Moderator

Smart or dumb converter is generally fine in Winter. Yes plug it in.

Watch what is on or the fridge and W/H may use more electric than you expect.


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2oldman

Las Vegas

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Posted: 10/12/17 04:12pm Link  |  Quote  |  Print  |  Notify Moderator

dboliek1112 wrote:

Also we just put new AGM batteries in.
Charge them, then disconnect them. AGMs can hold a charge a long time.

A few hundred posts on the subject:
Stay plugged in in storage?2007
disconnect? Oct 2013
Stay plugged in Mar 2014
Stay plugged in Jun 2014
Stay plugged in Sep 2014

Sandia Man

Rio Rancho, NM

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Posted: 10/12/17 04:53pm Link  |  Quote  |  Print  |  Notify Moderator

We have a pair of 6 volt golf cart batteries that we leave plugged in as well when stored here in our side yard, with AGMs I would do what is recommended by the manufacturer. Don't want to damage them with what they cost to replace.

gbopp

The Keystone State

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Posted: 10/12/17 05:07pm Link  |  Quote  |  Print  |  Notify Moderator

Plugged in 24/7. No problems.

SidecarFlip

SE Michigan

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Posted: 10/12/17 08:08pm Link  |  Quote  |  Print  |  Notify Moderator

ScottG wrote:

SidecarFlip wrote:

ScottG wrote:

It really depends on what convert/charger you have.

Dumb converter always at 13.6V = No. (or if you do leave it plugged in, check water levels often).

Smart converter = yes.


I have to ask what the difference is between a 'smart' and 'dumb' converter may be.

I have a 'dumb' and cheap WFCO and have never has an issue. Not to say I won't, but in 2 years, no.


Smart charger varies voltage. Dumb charger always sits at 13.6V and will eventually boil them dry.
Lost a 1 year old battery on a dumb charger before replacing both.

Your WFCO may indeed be a smart charger - many are. Their problem is they dont go into bulk mode soemtimes.


I will say I'm about to replace the guts with the PD upgrade... This winter.

It never goes into bulk mode, always 13.6 but that isn't the issue. The issue is getting my batteries over 90% when running off grid entirely (on genny). No water issues though. Level is pretty constant.


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ScottG

Bothell Wa.

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Posted: 10/12/17 09:31pm Link  |  Quote  |  Print  |  Notify Moderator

SidecarFlip wrote:

ScottG wrote:

SidecarFlip wrote:

ScottG wrote:

It really depends on what convert/charger you have.

Dumb converter always at 13.6V = No. (or if you do leave it plugged in, check water levels often).

Smart converter = yes.


I have to ask what the difference is between a 'smart' and 'dumb' converter may be.

I have a 'dumb' and cheap WFCO and have never has an issue. Not to say I won't, but in 2 years, no.


Smart charger varies voltage. Dumb charger always sits at 13.6V and will eventually boil them dry.
Lost a 1 year old battery on a dumb charger before replacing both.

Your WFCO may indeed be a smart charger - many are. Their problem is they dont go into bulk mode soemtimes.


I will say I'm about to replace the guts with the PD upgrade... This winter.

It never goes into bulk mode, always 13.6 but that isn't the issue. The issue is getting my batteries over 90% when running off grid entirely (on genny). No water issues though. Level is pretty constant.


You will like the PD!
Dont forget to get the Charge Wizzard pendant when you order.


Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2018 Silver Fox 32A - many mods to come!
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Kayteg1

California > Nevada

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Posted: 10/12/17 10:29pm Link  |  Quote  |  Print  |  Notify Moderator

My converter likes to go to 14.5V, what I know can be killing voltage when left for long time, so I let it charge the battery for a day and then disconnect for 6 months.
Good charger is worth lot of money as it can save and prolong battery life.
In my conversion I had 4-batteries bank for the house and 2 for the engine.
The house batteries were cheap golf-cart batteries from Walmart, but good charger made them lasting 12 years and I recall adding water 2 times in this period.

JTLance

Salem, Oregon

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Posted: 10/12/17 11:22pm Link  |  Quote  |  Print  |  Notify Moderator

DutchmenSport wrote:

Think about this? You plug in your camper when you are camping. Not uncommon to have it plugged in while camping for a couple weeks at a time, or even longer. Plug it in at home for several days in a row, or whatever. What's the difference between leaving it plugged in 2 weeks, or all the time?





Desulfation, read about it. Most newer chargers do it.

dboliek1112

Perryville, AR & Raleigh, NC

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Posted: 10/13/17 06:01am Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

dboliek1112 wrote:

Also we just put new AGM batteries in.
Charge them, then disconnect them. AGMs can hold a charge a long time.

A few hundred posts on the subject:
Stay plugged in in storage?2007
disconnect? Oct 2013
Stay plugged in Mar 2014
Stay plugged in Jun 2014
Stay plugged in Sep 2014


Thank you. Read 'em all.


"The only thing more expensive than education is ignorance." Benjamin Franklin

Dave and Missy Boliek
Roxeanne, Bell and MaggieMoo
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