Thoughts on hard tri-folds vs soft roll-ups for keeping gear dry?

I went trough the same thing with a set of Makita chargers back in 2019. Honestly, those soft roll-up covers are basially just a suggestion for the rain to stay out. I switched to a BakFlip MX4 hard tri-fold on my F-150, and while it's miles better, you still have to be obsessive about the drain tubes. If those get pinched or clogged with sawdust, your bed becomes a bathtub anyway. If you realy want to keep those Flexvolts safe, I’d suggest looking at a solid fiberglass lid or a DiamondBack if you can swing the cost. I eventually moved my expensive power tools into a couple of weather-sealed Packout boxes bolted near the cab. It adds that extra layer of defense for when the tailgate seal inevitably fails during a sideways storm. It’s a bit more of a reach, but losing a $200 battery or a specialized rivet tool hurts way more than spending two seconds opening a latch.

I honestly think any cover that sits flush with the rails is just asking for trouble if you're hauling tools daily. I ran a soft roll-up for a year and then a DiamondBack, but the issue was always the same: if I had a tall job site vac or a miter saw stand, I couldn't close the damn thing. I finally bit the bullet and got a Leer 180 mid-rise cap instead. It’s not just about the rain; it’s about the volume. Having that extra foot of vertical space means I can keep my DeWalt rolling stand and a couple of Packout stacks tucked in there without ever worrying about a leak. I used a thick bead of butyl tape around the bulkhead and haven't seen a drop of water since. It’s way more practical than digging trough bins or fighting with those tiny drain tubes under a flat cover.

If you're tired of soaking your 9.0ah batteries, look at a Decked system. I’ve had the legacy drawers in my Silverado for three years now and they’re practically bulletproof against the rain. Even if your cover leaks, the tools stay bone dry inside those HDPE drawers. I paired mine with a RetraxPRO XR becuase I like the T-slot rails for my rack. Most guys forget about the tailgate gap—pick up a $25 Extang MaxSeal tailgate seal to bridge that gap. It’s the only way to stop the spray from coming in the back when you're hitting 70 on the highway in a downpour.

I'm not convinced a fancy cover is the magic bullet everyone claims. Have you ruled out that the humidity trapped under a sealed cover might be just as bad for your electronics as a little splash? I’ve seen more than one guy pull "dry" tools out of a closed bed only to find them covered in surface rust becasue the air couldn't circulate after a storm.

Also, are you sure the leak is the cover and not just the bed design itself? Most trucks have gaps in the front corners that no cover will ever truly fix. Might be worth checking those before you drop a grand on a BakFlip.

I’ve had the exact same headache with those drain tubes—if you don't keep a piece of weed eater string handy to snake them out, you're toast. One thing people ussually miss with the hard tri-folds is the bulkhead seal right against the cab. The factory foam they give you is usually garbage and flattens out in a season. I ended up doubling up with some 1/2-inch EPDM weatherstripping to stop the water from sheeting down the front wall when I'm parked on a hill. It makes a huge difference if you're trying to keep those batteries dry near the front.

I stopped trying to make the bed 100% waterproof because it's a losing battle. What actually saved my gear was just screwing some 2x4 runners to the bed floor. It keeps my boxes about 3 inches up so the water just flows underneath and out the tailgate. I use a basic Gator soft tri-fold to keep the direct rain off, but those sleepers are what keep my batteries from sitting in a puddle. It's way cheaper than a DiamondBack and I don't have to mess with those annoying drain tubes that always get gunked up with sawdust anyway.