Will your boat’s batteries survive the winter? You certainly don’t want to wait for spring to find the answer to that question. If your batteries are in fact dead when you try to start the season, they can be brought back to life; it’s not the end of the world. But it’s definitely a hassle you don’t want to have. Here’s some advice from Practical Sailor (for these purposes, batteries work the same way on powerboats and sailboats) about steps you can take to help your batteries last until warm weather. If you’ve removed the batteries from the boat, store…