Well with any luck i have just done my last rainy/dark voltage check , which was a good result again !
I have only driven 10 miles tops today , started with a full battery , the pump/drill has taken out 11 amps , which is about 3 hours non stop pumping , or at least 4 hours on the job with standard houses , i parked the van up at 4 so has been a 4.5 hour rest .
Solar in not known as the meters played up again , but it was pants weather for sun , this could be the answer i have been looking for , so i am fully charged and still have a 10 mile journey to pull from the alternator in the morning before i start work again .
As long as the battery holds up i am on a winner here .