I bought these mainly for the smoke detectors I have around the house. For low-power stuff, they work just fine, no issues so far. They’re definitely more affordable than other name brands, which is great if you need a bunch at once. Just keep in mind these are zinc carbon, not alkaline or lithium, so they’re not meant for high-drain devices. I wouldn’t use them in anything that needs a ton of power or constant use. They came well packaged, none were leaking, and I appreciate that they’re made without toxic stuff like mercury or lead. Good deal for backup or light use, but probably not your go-to for heavy-duty gadgets. Read more
The PKCELL Carbon Zinc 9V batteries are the perfect, cost-effective solution for my home's essential low-drain devices. I exclusively use them in my smoke and carbon monoxide detectors, where reliability is non-negotiable. They provide consistent, stable power and have proven to be ultra long-lasting, giving me real peace of mind. While not designed for high-drain electronics like powerful toys or radios, their performance in smoke detectors is exactly what you want. The low self-discharge rate means they hold their charge while in storage, ready for when I need to perform my biannual detector replacements. Purchasing in this multi-pack makes tremendous financial sense, ensuring I always have fresh batteries on hand for all my safety equipment without last-minute store runs. For their intended purpose, they are reliable, affordable, and highly effective. I trust them to power my family's first line of defense, and they have never let me down. A highly recommended, no-fuss essential for every household. Read more
This was my original review: "I bought this 10-pak of 9v batteries specifically for my annual smoke alarm battery replacement. I have a big house and have 10 smoke detectors. After less than 48 hours 4 of the ten FAILED (smoke alarm does the "beep-beep-beep" sound when batteries are low). That's a 40% failure!" Here is an update: After posting this review I contacted Customer service and they offered to replace this product with another "no charge" order. Shortly thereafter I was contacted by the company also offering to replace my order with another at no charge. Today I received that replacement order so I am changing my review to a "four star" due to the excellent customer service. I will have to wait for further comments regarding the quality of the product until they are used. Read more
It's a long-lasting battery, great for smoke detectors, with a great price and good quality. Read more
I have a larger home with 12 different Smoke detectors. I change my batteries each year before they start chirping to make me aware the voltage is dropping on the used batteries. I check these batteries for voltage before installing in the smoke alarms and found they had slightly more c=voltage than the big name batteries. I am giving these batteries a trial but feel they should meet my needs and to save me some money. Will post a review after my first year of service. Price much lower that name brand batteries with fast delivery Read more
Ok I must say I am upset and frustrated with this product! I ordered these 9V batteries of 10 pack since I have at least 6 smoke detectors needed new batteries. But one battery out of the 10 somehow couldn’t fit in any of the smoke detectors which was odd! It’s like it was made a slightly different size!! Then literally a day after we installed all 6 batteries into the 6 smoke detectors, two of the smoke detectors beeped with low battery warning ‼️ wow what quality this product has!! I now have to uninstall all of them and put them back to the packaging to return! What a waste of time!! So upset! Read more
Lot of batteries for a good price. Time to change smoke detectors. Read more
Perfectly for all the Christmas toys plus bought for smoke alarms new yearly Read more
