Now thats my kind of drive to the shops
I`ll go out to top up with petrol for the next day or outing, fill the car up & when I get back home there is only half a tank of fuel left (theres a Shell 0.8miles from my house)
I`d get a new battery, the halfrauds one you have may not be the right amp rating compared to the stock & when changing just make sure the connections are cot corroded & have plenty of grease on them. Do not use WD40, this will remove any grease thats on the connectors. It`s a penetrating oil good for cleaning & water displacement. You can use it to clean the connections but make sure that they are greased after.