Review on 10 Pack CELEWELL CR2032 Lithium Coin Cell Battery - High Capacity 230MAh, 3 Volt Button Battery For Devices - ECR2032 Replacement - 5-Year Warranty (Not Suitable For Thermometers) by Renee White

First, let me divulge that if I wrote a review within 3 days of receipt (8/28/2018), I'd get a lifetime guarantee on the batteries. They do come with a three year warranty otherwise. This is good, because the reason I removed a star is because I received them exactly one year to the date of their manufacture. In other words, they were a year old.However, I picked a couple at random and tested them. One was 3.2v and the other was 3.3v. Unfortunately, there are no testing holes so I had to actually open the batteries. Fortunately, I needed them right away anyway.The package came with a 10% coupon which was already expired. Still I'll buy them again when I'm in the market for more CR2032 batteries.