[modeleng] Re: Battery problems

Hi here is some good info on batteries
Kenny
Skye
  a.. How effective is advanced battery charging on a battery and can it 
damage the battery?
  b.. What is the best battery to use for an auxiliary charging system?


----- Original Message ----- 
From: "Jeff D" <jeffdayman@xxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, December 29, 2007 1:32 PM
Subject: [modeleng] Re: Battery problems


> Hi Peter,
>
> I've had similar problems with car batteries over the years. Sometimes the
> batteries develop an internal short from deposits falling from the plates
> and shorting between them will cause trouble. Most batteries last between
> 5-8 years, but some as few as 2 and some as long as 12 years. If you have 
> a
> major failure it is worth taking the battery back to the supplier. I have,
> and twice they replaced them no questions asked.
>
> Chargers- I suspect these have caused many of my battery problems over the
> years, especially the cheaper DIY ones. Some have relays that can spark,
> others have thermal switches protecting the transformer coils or regulator
> that can spark, and I have seen a bad capacitor in one and a dial lamp
> socket/loose bulb in another cause a spark. My advice is to get a
> profesional grade high quality charger, and use it in a well vented space,
> preferably with an induction motor fan running to disperse the gases. The
> batt must also be properly filled with tested good electrolyte in all 
> cells
> before charging.
>
> When my Dad had his service station we worked on twenty or more battery or
> battery related car problems every week, particularly in spring or autumn
> when wide temp changes happen daily. He taught me the basic rules above, 
> and
> he had a good charger with a built in fan, and we only had a couple of
> batteries explode during charge over 30 years or so that I was around the
> shop. At home, using several poor DIY chargers I exploded a couple more, 
> but
> after I found a good charger no further issues.
>
> Good luck, Jeff Dayman
>
>
>>From: The Sheppard Residence <psbr20252@xxxxxxxxxxxxxxxx>
>>Reply-To: modeleng@xxxxxxxxxxxxx
>>To: modeleng@xxxxxxxxxxxxx
>>Subject: [modeleng] Re: Battery problems
>>Date: Sat, 29 Dec 2007 00:08:47 +0000
>>
>>Hello Tel,
>>
>>Happy Christmas.
>>
>>Sealed, but not unvented.
>>
>>It sat in the garage on the charger for a couple of days, no source of
>>ignition (to my knowledge anyway).  I've had this battery for a about
>>three years and charge it monthly.
>>
>>It's the same battery that starts my sons Hillman Imp.
>>
>>Cheers
>>
>>Peter
>>
>>TEL wrote:
>> > Not unusual Pete - unvented batteries and chargers don't mix - the
>>generated
>> > hydrogen has nowhere to go but  .....
>> >
>> >> It was marked, sealed for life, I guess than when it "unsealed" 
>> >> itself,
>> >> that was the end of its life!
>> >>
>> >> http://www.lmandwr.co.uk/battery/battery_1.jpg
>> >> http://www.lmandwr.co.uk/battery/battery_2.jpg
>> >>
>> >> More seriously, any ideas what could have happened?  This is a battery
>> >> that is used in my Landrover (in series with the "normal" battery) to
>> >> give me 24v for the diesel heater.  It comes out about once a month 
>> >> for
>> >> charging.
>> >>
>> >> It was put on charge a couple of days earlier on a 12v, 5A (trickle)
>> >> charge, I came into the workshop yesterday to find this!
>> >>
>> >> I have since charged a similar battery (same type) without any
>>problems.
>> >>
>> >> Cheers
>> >>
>> >> Peter
>> >>
>> >> MODEL ENGINEERING DISCUSSION LIST.
>> >>
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>> >
>> > MODEL ENGINEERING DISCUSSION LIST.
>> >
>> > To UNSUBSCRIBE from this list, send a blank email to,
>> > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the
>>subject line.
>> >
>> >
>>
>>MODEL ENGINEERING DISCUSSION LIST.
>>
>>To UNSUBSCRIBE from this list, send a blank email to,
>>modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
>>line.
>
>
> MODEL ENGINEERING DISCUSSION LIST.
>
> To UNSUBSCRIBE from this list, send a blank email to,
> modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject 
> line.
> 


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