What's the best car battery to use with a shurflo pump? Tons out there with varying charge times and capacities. Been racking my brain and it's giving me a headache lol. Will I need to charge it at night too? Will be driving half an hour to the towns im doing, hopping street to street all very close, then half hour back. So probably an hour a day driving in the van. It's a Ford transit too if that's relevant.