The first warm weekend always exposes which garage projects you actually finished over winter and which ones you didn't. If you're staring at an ATV, side-by-side, cruiser, or personal watercraft that just clicks when you hit the starter, the battery is usually the culprit. A lead-acid pack that sat through five months of cold doesn't always come back, and even a smart charger can only do so much for a battery that's reached the end of its service life. Spring is the worst time to find out, so the smart move is to handle it before the first ride.

Source: https://www.topspeed.com/from-storage-to-trail-one-battery-upgrade-that-pays-off-every-weekend/