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

I purchased these to replace a couple of rechargeable 9v batteries in the wireless mics that my Pastor threw away forgetting they were rechargeable. I was intrigued by the USB charging. They seem to hold a charge as long as the other that I have. The ability to plug them into a USB charger is great.

I like you can charge the batteries via USB-C or a regular battery charger.... Good value and the batteries function very well....

nifty to have on hand, saves money and helps the environment

I bought these because I was tired of buying 9v batteries for my bass guitar. These are wonderful! I keep one charged by my guitar and one inside...when the battery runs out, I just swap it. Also, they charge with USB-C. Fantastic idea!Now the batteries do not last as long as normal 9v batteries in my guitar. I'd say 1/2 to 3/4 the duration. However, they are easy to swap and charge so I don't mind.

I didn't know there were rechargable 9V's and these are awesome because they don't need a special charger, just a cable. I was getting sick of spending so much money on non-rechargable 9V batteries. So far, I've loved these, and they are replacing all my non-rechargeables in the house now. Good price, shipped quickly, and work great.

These are good batteries. But since they take more than 9v to fully charge, a cellphone charging block (5/9v) cannot fully charge them. You need a laptop charging block (like a Lenovo one) which can provide 12v or higher to charge them fully. The charging block is not included so you need to keep that in mind when purchasing and there isn't a reminder on the package.

These batteries use a simple USB-C cable instead of some proprietary dock or cable, never have to dig in my junk drawer looking for the special charger I need. I use these very often and they keep taking a charge since May of 2024. Highly recommend.

I'm attempting to power a small hand held neurostimulation device. When I use a traditional 9v battery the device powers up just fine. When I use these batteries the device does not power up. The concept is great but these batteries do not work for my device, sadly. Hence, I'm providing a 1-star rating.