Hi, I'm currently using a 110ah lead acid wet cell leisure battery, but I'm finding I can get about a day at a push before the water pressure drops and eventually stops. I've had the battery checked (it was bought in Jan 16) a couple of months ago which was fine, I've changed to Manual pump controller to try and rectify to no avail. The pump is a Shurflo 100psi & is nearly three years old. Does this sound like battery or pump fault? I'm stuck.