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.