Quzmo 3-Pack Rechargeable 9 Volt Lithium-ion Batteries, 1300mAh Long Lasting Power, USB-C Recharge with 2 in 1 Charging Cable for Smoke Alarms,Multimeters,Microphones,Walkie-Talkie,Toys

The Quzmo Rechargeable 9V Lithium-ion Batteries have exceeded all my expectations. With a powerful 1300mAh capacity, these batteries deliver long-lasting performance and hold up incredibly well in high-demand devices. From smoke alarms and wireless microphones to multimeters and walkie-talkies, they provide a steady, reliable voltage through the charge cycle. Another excellent feature is the presence of a USB-C charging port. Each battery being able to be recharged directly, without the need for a larger charger device, is very convenient. The 2-in-1 USB-C cable provided allows multiple batteries to be charged easily, while the small LED lights are the icing on the cake to indicate when each one is full. From a safety perspective, Quzmo has obviously given quality attention. The batteries are protected against over-temperature, overcharge, overload, short circuit, and general safeguards, so I have confidence using them in mission-critical devices like smoke detectors. They’re rated for over 1,200 recharge cycles, which is impressive and makes them far more cost-effective than disposable alternatives. I also appreciate the brand's worry-free warranty and fast customer support—great peace of mind for anybody trying rechargeable batteries for the first time. Overall, this 6-pack presents excellent value and a smart upgrade for homes or professionals who rely on 9V-powered devices day in and day out. Very long-lasting, easy to recharge, very dependable. Certainly recommended.

Good 9 Volt Batteries for Hobby use. Good Charge that last.

Great, easy to use/recharge. I just had to throw out a half dozen batteries which had died waiting to be used! Now these will ensure that I always have a 9v battery when I need one. I had already upgraded all of my other batteries to rechargeable ones and didn't know they made these.

I would give 5 stars but have only use them for a month. I use 2 dual channel Tens units every day. Each unit uses one 9 volt. Previously I used Energizer Max, which lasted 2 days at best, and out preformed most other non rechargeable brands, but still costing a small fortune. I've tried 2 mid - low range rechargeable brands and they pooped out fast or failed completely after just a few uses. These Quzmos have been powering my tens units for 2 days constantly, so they are recharging well. If they live up to the mfg stated spec, "...recharged more than 1200 times.", and lose even 25% of charged power I'm still saving a boat load of money.

These 9V batteries are exactly what I was looking for. I use them to power my wireless microphone pack for hours at a time, and they provide consistent, long-lasting power without any issues. The capacity is fantastic. The best part is not having to throw away an endless stream of single-use alkaline batteries. These are economical, eco-friendly, and perfect for any professional or hobbyist who relies on 9V power. Highly recommended.

Works! Comes with a charger line for two at the same time.

I have a safe that takes 9 volt batteries. It uses up a whole battery every 1-3 months so I thought rechargeable would be great. First off, these don’t charge on Apple chargers with USB C. The only thing I’ve found to work is an old charger that has a USB-A to USB-C adapter on it. New chargers that are dedicated to USB-C don’t work in my experience. I think it’s because the new chargers need some sort of intelligent device on the other end to request a specific amount of power (USB “PD” Power Delivery). But that’s not why I dislike these batteries. I charges up 2 batteries. One went in the safe lock and one went on top of the safe with painters tape covering the terminals so it wouldn’t touch anything and discharge. When it came time to change the safe battery like 2 months later the battery on top of the safe had discharged to nothing. The battery in use had more power than the battery just sitting there. This is very high internal self-discharge. These are junk cells. I’ve dealt with junky batteries before and this is nothing new.

Works great for my device, no problems noted so far.

Buen producto