HW Rechargeable AA Batteries with AA/AAA Charger, [1.5V, 8-Pack] 3500mWh Double A Lithium Battery Charger High Capacity, Cargador de Baterias for Toys, Keyboards, Doorbell, Remote Controls, etc.

As a 25 year veteran of the audio engineering world, I've always been anti rechargeable batteries in wireless mics, but thought I should try a Li-ion option. I bought these as a test for our wireless mics at the church. We burn through hundreds of batteries a year in the Sennheiser EW series wireless. These last a bit longer than a good Alkaline, but then get to be recharged as opposed to put in the bin. The biggest downside is that they maintain their voltage until right before they die, so battery metering is essentially useless. You need to test run time before you stick them in critical roles. I tested on a single mic for a couple months before rolling out to the entire vocal team. We are now almost 9 months into using them weekly without any hiccups. Surprisingly, I highly recommend - at least for wireless mics and IEM packs.

I love the durability, charge retention, and the specific needs of my devices. Not all rechargeable batteries are created equal, so choosing this one was definitely the right type and brand can significantly improve the performance that we needed.

These seen to work fine and last as long as actual LiOns

Love this rechargeable batteries!

This product doesn’t work. All I get is red flashing lights right out of the box which means either defective battery or low power and this is my power supply in the picture and it’s more than enough power for this thing. I tested the batteries in another charger and I don’t get the error so it’s this thing.I ordered a replacement and that came with a type C cable and the device is the old usb connection rendering the replacement useless. Buying anything from them is a risk not worth taking.

A good price for the product, plus the batteries last longer then regular batteries, and you can recharge them for a long time and don't have to keep running to the store from regular batteries lithium batteries is the way to go with the charger

great set for low price, charger worked well and the batteries are working great in a couple flashlights I use often. I will appreciate not having to by more batteries but just recharge these.

Charge superfast, great performance, can be used with any equipment which requires AA Battery