[jouk45]

might be useful having one or 2 of these in the back of the van, for an emergency, life time stored until used is 50 years, all you do is add a drop of water and in seconds you have full power,  they are disposable really but costs only 20 quid,

link here, www.bullybeef.co.uk/gaston-sealed-lead-acid-batteries.htm

[LWC]

i never have much water with me