Pedals, active pickups, tuners, wireless packs... Ernie Ball's USB-C AA and 9V batteries are designed for them all. They have status LEDs and can be replenished simultaneously via the bundled cable ...

But, as it turns out, there’s a lot more going on with AA batteries than I ever assumed. I’d ignored the text and markings on ...

With recharge times as quick as 75 minutes to 80%, Ernie Ball guarantees that these batteries deliver a “consistent, ...