[modeleng] Re: Battery problems
- From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sat, 29 Dec 2007 01:24:09 +0000 (GMT)
Hmmmm, if the charger has some kind of open/unsealed relay, then when it
opens it's contacts you'll get a spark.
Also if there was any kind of mechanical timer setup on the charger or any
other equipment in the room, the spark when it opened/closed it's contacts
could be enough to explode the hydrogen.
The other thing would be if the plates inside the battery had warped and
did something silly like touched together, or if some of the wiring git
hot, melted it's insulation and caused a short/spark.
Yours,
Rich.
On Sat, 29 Dec 2007, The Sheppard Residence wrote:
> 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
>>>
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>>
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>
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