I've just received this from Eward Roller who's the tech man at Powervamp;-
Could I suggest that you add to the existing thread on the forum stating that you have spoken to myself and I have agreed that you can cut and paste the following…
“The Powervamp range of racing batteries have different characteristics to a conventional ‘wet’ battery, and these need to be catered for to maximum your batteries longevity. The PVR batteries are of a much lower amp/hour capacity, which basically means that any load or drain on the battery whilst the engine is switched off, (ie. the alternator is not putting power back into the battery), will flatten it more quickly, which can lead to, if undetected, a ‘deep discharge failure which is unrecoverable.
The fitting of a ‘kill’ switch in the positive line to the battery will isolate the battery when not in use and also act as an immobiliser once the key has been removed. This relatively inexpensive modification could save you the cost of a new battery and is recommended where at all possible.”
Obviously, if you or any of the other forum members wish to ask any further questions I would be only too happy to answer them.