9V Rechargeable Batteries, 1300mAh High Capacity Lithium-ion Long Lasting 9 Volt Batteries with 2 in 1 USB C Fast Charging Cable for Smoke Alarms,Microphone,Multimeters,Toys,Game Controllers (2 Count)

I use these in a guitar that states a 9v battery life of 20 hours and I've found that to be correct, therefore I don't think using disposable batteries a reasonable prospect. These fit and work perfectly, I put a newly charged one in Sunday morning for the church services and it will make it through practice and playing through the coming week. The next Sunday morning I put the second fully charged one in and put the first one on charge to be ready for the next Sunday. They charge very quickly and they Y cable lets you do both at once. They've saved me a ton over the disposable batteries.

Good long lasting battery quick charge, never have to buy disposable batteries again and these can get pricey

i wasn't sure about charging a 9volt battery from 5volt usb. This is a pretty awesome solution. Works well, holds nice charge, charges up fast. Will order again for sure.

Aveces se pone a cargar pero las pongo a funcionar y parece que no cargó, la pongo otra vez a cargar y luego ya funciona bien

These batteries exceeded my expectations. I use a TENS unit for up to 12 hrs at a time & one battery lasted me 3+ days. I had no reduction in power on my TENS either. These batteries are going to save me a ton of money on buying batteries & are a great value for the money. I'm very pleased. They fit my TENS unit just fine too. Doesn't take long to charge.

No le dura mucho la carga.

Excellent batteries, will prevent buying alkaline batteries, the plugin charge is cool.

I did not expect much but was pleasantly surprised. These work great on my tens unit! For those that don't know what a tens unit is, it's a bug zapper that attaches to my back with electrical pads and zaps my back to help alleviate chronic pain.(Humor) I could go thru 2 alkaline per day. 1 of these lasts most of the day.

Excelente producto

Pienso que son costosas para tan poca vida útil

Aunque se cargaron las baterias el tiempo indicado, no lograron los mA que decian

Excelente