🔋 Long-Lasting TIANQIU 10PCS Ag4 Lr626 377 Sr626Sw Alkaline Battery FBA - Enhanced Performance for Your Devices Review

Only needed two for two hours but I bought a pack of 10 for future use. I'm not sure how long they will last, but time will tell. Ha-ha-ha.ahem. However. Although it looks good so far.

I opened three batteries and when they stopped working with the laser cartridge I checked their voltage. Read about 1.4 volts versus 1.5 volts as stated. I sent them back and asked for a refund.

They're great, but if you don't use a lot of these you'll throw most of them in the trash. I can try putting them in the fridge to keep them longer (a trick my mom used to do), but I've thrown out quite a few since they've been in my drawer for a while.