Thanks Spruce, I’ll see about getting one you just posted . Most grateful for your help.
The initial thread back in 2007 was about using the van's battery as a power source to run our wfp pump.
Some window cleaners advise that they do this successfully. We haven't had the same experience. My son initially had a Peugeot Partner van and his van battery went flat in 4 days. Later, the starter battery was replaced with a new one, and we tried it again. After 4 days the new battery was flat. So for us, it didn't work as we just don't do enough mileage to recharge the battery. However, years back, another windie had the identical van in the south, and he used his starter battery without issue.
A few years later, my son-in-law joined us with a Ford Transit Connect T230. His daily commute was 16 miles either way, plus another 10 miles maximum to his cleaning area. His van battery also went flat after about 6 cleaning days, even though he was also using his van for private journeys. We fitted a Numax battery with a split charge relay, and he had to put a charger on that battery every week.