Way back when my older son was still in about the 7th or 8th grade, he did a science project comparing all the batteries on the market. He didn't look into leaking, but concentrated on battery life. Did a thorough job too. And found out that the cheapest brand out there (I don't remember which one now) was the longest lasting brand. The most expensive brand was surpassed by several other brands. I don't use D, C, or AA batteries anymore. Got a batch of LED flashlights that take AAA batteries, and the light is brighter, and the batteries last longer. And small enough to put into my shirt or pants pocket. They take 3 batteries, and I bought a pack of 10, came with 30 batteries, for just under $ 10.
"It ain't what you're told, it's what you know." - Granny Weatherwax
Gather the villagers, pitchforks, torches; we march at dusk!
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.