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.