Overheard a customer in Denver say their old system had a hidden battery backup

I was finishing a panel swap in a Denver home last month and the owner mentioned their old system had a battery tucked inside the wall behind the main unit. They only found it when they remodeled. It made me think, I always check the obvious spots, but now I ask about any past work or hidden panels before I start pulling wire. Has anyone else found a surprise component in a wall during a retrofit?

Update: The old food court floor at the Sunrise Galleria in Tampa gave way

I was there last weekend checking out the old Orange Julius spot, and a whole section of the floor near the fountain just collapsed under me. It was just rotted plywood under the tile, looked fine from the top. I got a leg through up to my knee before catching myself. Anyone else run into hidden floor rot in these places, especially around water features?

I finally realized why so many techs over-torque oil drain plugs after seeing the same stripped pan threads twice this week.

The click of a torque wrench feels different on a cold aluminum pan versus a warm steel one, so I started setting mine 5 ft-lbs lower for cold engines to avoid that $200 repair bill, does anyone else adjust their spec based on temperature?

Just hit 500 identical sourdough loaves and the starter is acting WEIRD now

Can we talk about assembling a 60% board in a cramped hostel common area?

I see everyone saying you need a clean, dedicated bench for builds. But last month in Bangkok, I put together a full custom with just a basic toolkit on a wobbly table. The noise from other travelers actually helped me focus, and now I think insisting on perfect silence is overrated. Why do we act like a messy space ruins the fun?

Shoutout to the better sugar-free options we have now in baking

Baking without sugar used to be a fail, but now it's a win.

My favorite boss in the kitchen always listened first.

Teams work better when the chef hears them out.