I am about to buy some new batteries for my LED lights. The question that I have is in regards to the runtime of the lights based on the batteries that I buy. We have been running Everstart 27dc batteries with 14 27w LED lights but we recently replaced the 14 27w lights with 10 50w LED lights. Now we are trying to buy some new batteries because our old ones aren’t holding a charge as long as they used to and we’ve found that they have 29dc batteries. So I’m wondering if anyone on here uses the Everstart 29dc and can tell me how long they last with 50w lights and if there is a significant difference between the runtime of the 27dc and 29dc. I’ve tried doing some math to figure out runtime but I don’t really have anyway of knowing if I’m in the right ballpark.