Kratax New Rechargeable Lithium AA Batteries 12 Count 1.5V Lithium ion Rechargeable AA Batteries with Low Battery Alert and 2H Smart Battery Charger, 3500mWh Long-Lasting for Household Office Devices

I use these on my Sound Devices MM-1 Preamplifier and my Transmitters! Having about 9hrs of Transmitter battery life is pretty great for rechargeables! Just wish they had more of a 10% battery life warning, but better than nothing. I also wish there was an 8 Bay charger instead of just a 4 Bay charger.

Rápido la entrega y muy buenas baterías duran mucho

Thought these would be high quality batteries, wrong. I used them in my Blink outdoor camera, they died in 2 weeks of light use. After replacing with a fresh set, the short life of approximately 2 weeks repeated itself. Also, the built in feature that slightly drops voltage to give warning the battery is low never triggered. My camera just died unexpected. The batteries that come with the camera are rated lower but will last about a year. They are expensive but live up the expectations. Amazon was great in helping return these. Update: seller deceptively charged $14 restock fee for returning a couple days past the 30 day return window. Pathetic. Thank you Amazon for fixing this.

The 'battery low' notification by dropping the voltage when the battery is close to depleting is exactly why I bought these - to use in smart locks etc. where the low warning is critical. Firstly, overall battery life is really poor, especially at this price point. The voltage drop feature only worked about half the time in my devices, and I got stuck a number of times with dead device due to dead batteries without warning.

Charged well in provided charger, tested in wireless mikes. Works great so far.

Used batteries for Blink cameras and they work wonderfully.