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. >> >> >> >> 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. > > > 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.