Re: [RE-wrenches] trickle charger for 4 12V batteries

2019-10-19 Thread MDElectricSolar 
https://www.iotaengineering.com/dls5413.htm

Michael D Nelson
MD Electric & Solar, Inc.
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707-884-1862 office
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> On Oct 19, 2019, at 5:39 AM, John Blittersdorf  
> wrote:
> 
> 
> The least expensive way and easiest way (not having to reconnect string) 
> would be 4 inexpensive battery maintainers.  Unless they 
> Already have something like an Iota 48volt battery charger. 
> 
> John Blittersdorf
> 
>> On Mon, Oct 14, 2019 at 3:02 PM Dave Tedeyan  wrote:
>> Hi All,
>> 
>> If someone were to bring their set of 4 sealed LA batteries from an off grid 
>> cabin into their house for the winter, I am recommending that they get a 
>> trickle charger to keep them topped off for the ~6 months that they will not 
>> be in use. 
>> 
>> Does anyone have recommendations for a product? And is it best to get 4 
>> separate 12V chargers, one 48V charger, or a single 12V charger and put them 
>> all in parallel? Or am I just overthinking this?
>> 
>> Cheers, 
>> Dave
>> 
>> Dave Tedeyan, PE
>> Senior Engineer | Taitem Engineering, PC
>> 
>> 110 South Albany Street | Ithaca, NY 14850
>> o. 607.277.1118 x121  f. 607.277.2119
>> www.taitem.com
>> 
>> Solar • Sustainability • Energy • Design
>> B-Corporation Best for the World 2018 Honoree
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Re: [RE-wrenches] trickle charger for 4 12V batteries

2019-10-19 Thread John Blittersdorf 
The least expensive way and easiest way (not having to reconnect string)
would be 4 inexpensive battery maintainers.  Unless they
Already have something like an Iota 48volt battery charger.

John Blittersdorf

On Mon, Oct 14, 2019 at 3:02 PM Dave Tedeyan  wrote:

> Hi All,
>
> If someone were to bring their set of 4 sealed LA batteries from an off
> grid cabin into their house for the winter, I am recommending that they get
> a trickle charger to keep them topped off for the ~6 months that they will
> not be in use.
>
> Does anyone have recommendations for a product? And is it best to get 4
> separate 12V chargers, one 48V charger, or a single 12V charger and put
> them all in parallel? Or am I just overthinking this?
>
> Cheers,
> Dave
>
> *Dave Tedeyan, PE*
> Senior Engineer | Taitem Engineering, PC
>
> 110 South Albany Street
> 
>  |
> Ithaca, NY 14850
> 
> o. *607.277.1118 x121*  f. 607.277.2119
> www.taitem.com
>
> Solar • Sustainability • Energy • Design
> B-Corporation Best for the World 2018 Honoree
> ___
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
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Re: [RE-wrenches] trickle charger for 4 12V batteries

2019-10-18 Thread Dana 
I have sealed 12 vdc batteries in 2 Bimmers. 
First winter - Left full time on a BMW smart charger over the winter killed 
both. My mechanic confirmed this was a bad idea.
Second winter - did a 24-30 hour tapered maintenance charge (same charger) 
every 5-8 weeks and they are still good shape after 5 years.


Dana Orzel  Great Solar Works, Inc. 
C - 208.721.7003   d...@solarwork.com
Idaho Contractor - # 028765 Idaho PV # 028374
NABCEP # 051112-136   www.solarwork.com
"Responsible Technologies for Responsible People since 1988"  
 Please consider the environment before printing this email.


-Original Message-
From: RE-wrenches  On Behalf Of Alex 
MeVay
Sent: Friday, October 18, 2019 2:04 PM
To: RE-wrenches 
Subject: Re: [RE-wrenches] trickle charger for 4 12V batteries

Hi Dave,

I'm interested in others' experience here, but personally, I'd skip the 
charger.  If they are brought to full charge before storage and are in decent 
shape otherwise, they shouldn't have any trouble surviving winter storage.

I've seen many sealed batteries die an untimely death due to electrolyte loss 
from trickle chargers.  On the other side, I've many times stored stored 
vehicles for 3-8 months with batteries disconnected and no apparent ill effects 
(and enough charge remaining to start the car upon my return), save one battery 
that was already on the way out.  The ideal scenario, in my mind, would be to 
charge the batteries about once a month.

Alex MeVay

Blue Sky Energy * http://www.blueskyenergyinc.com Genasun * 
http://www.genasun.com ___
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Re: [RE-wrenches] trickle charger for 4 12V batteries

2019-10-18 Thread Alex MeVay 
Hi Dave,

I'm interested in others' experience here, but personally, I'd skip
the charger.  If they are brought to full charge before storage and
are in decent shape otherwise, they shouldn't have any trouble
surviving winter storage.

I've seen many sealed batteries die an untimely death due to
electrolyte loss from trickle chargers.  On the other side, I've many
times stored stored vehicles for 3-8 months with batteries
disconnected and no apparent ill effects (and enough charge remaining
to start the car upon my return), save one battery that was already on
the way out.  The ideal scenario, in my mind, would be to charge the
batteries about once a month.

Alex MeVay

Blue Sky Energy * http://www.blueskyenergyinc.com
Genasun * http://www.genasun.com
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Re: [RE-wrenches] trickle charger for 4 12V batteries

2019-10-14 Thread Jerry Shafer 
Dave
LA type batteries like exercise, not just keeping them fully charged, there
are smart chargers that load then charge the batteries
Jerry

On Mon, Oct 14, 2019, 12:02 PM Dave Tedeyan  wrote:

> Hi All,
>
> If someone were to bring their set of 4 sealed LA batteries from an off
> grid cabin into their house for the winter, I am recommending that they get
> a trickle charger to keep them topped off for the ~6 months that they will
> not be in use.
>
> Does anyone have recommendations for a product? And is it best to get 4
> separate 12V chargers, one 48V charger, or a single 12V charger and put
> them all in parallel? Or am I just overthinking this?
>
> Cheers,
> Dave
>
> *Dave Tedeyan, PE*
> Senior Engineer | Taitem Engineering, PC
>
> 110 South Albany Street | Ithaca, NY 14850
> o. *607.277.1118 x121*  f. 607.277.2119
> www.taitem.com
>
> Solar • Sustainability • Energy • Design
> B-Corporation Best for the World 2018 Honoree
> ___
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
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>
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> www.re-wrenches.org/etiquette.htm
>
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> www.members.re-wrenches.org
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>
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[RE-wrenches] trickle charger for 4 12V batteries

2019-10-14 Thread Dave Tedeyan 
Hi All,

If someone were to bring their set of 4 sealed LA batteries from an off
grid cabin into their house for the winter, I am recommending that they get
a trickle charger to keep them topped off for the ~6 months that they will
not be in use.

Does anyone have recommendations for a product? And is it best to get 4
separate 12V chargers, one 48V charger, or a single 12V charger and put
them all in parallel? Or am I just overthinking this?

Cheers,
Dave

*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC

110 South Albany Street | Ithaca, NY 14850
o. *607.277.1118 x121*  f. 607.277.2119
www.taitem.com

Solar • Sustainability • Energy • Design
B-Corporation Best for the World 2018 Honoree
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