Review on Pack of 10 Eunicell SR621SW SR621W 364 Silver Oxide Button Cell Batteries 1.55V – Long Shelf Life, Zero Mercury (with Expire Date Marked) by Kyle Gilbert

10 pcs. boxed SR44WP Pros: - Stamped expiry date December 2024; purchased in September 2021 (stamp placement looks like the seller added a date, it is not professionally printed on the packaging) so we have to rely on the seller's honesty. -- price for 10 packs -- silver oxide versus alkaline -- presumably to last longer and give better electrical performance -- intended to replace types 303, 357, LR44 and others -- replaced some 3 year old batteries that still gave power - - this swap was totally routine Cons: -- not yet Other thoughts: -- - they are designed for 1.55v, some devices use 1.5v, never seen negative power when used in lower rated devices - In stock, ships next day and I'm not a big contributor. - I would buy the same product again from this seller. -- Use them in small calculators, built-in light switch thermostat and portable timer/schedule reminder