Okay, let me start by saying these Energizer Ultimate Lithium AA batteries are LEGIT. I bought the 20-pack (5x4) for my Blink cameras, and wow—what a difference!

First off, they last FOREVER compared to regular alkaline batteries. Like, I used to change batteries every week (ugh), but now? My spreadsheet (yes, I track this nerdily) shows 47-98 days per set depending on usage. That’s not just good—it’s *unreal*.

Bonus points: They survive Canadian winters like a champ (-40°F?!). My outdoor cameras don’t even flinch. Also, the 20-pack is clutch—I replaced all my cams at once without that annoying "one dead camera at 3AM" scenario.

Price-wise? Cheaper than my local store, shipped fast in protective packaging. Only gripe: I wish they came with a tiny espresso shot to match *my* energy levels. Jokes aside—10/10 would zap again.