Ernie Ball USB-C Rechargeable AA Battery by Paleblue – 4-Pack

Pro-grade rechargeable AA batteries made for musicians — consistent power, no disposable waste, and a charge you can get anywhere there is a USB-C cable.

Who This Is For

AA batteries are everywhere in a musician's life — wireless transmitters, clip-on tuners, keyboard controllers, microphone receivers, drum machines, metronomes. They also tend to fail at the worst possible moment, and buying them in bulk adds up fast. The Ernie Ball USB-C Rechargeable AA Battery by Paleblue is the straightforward answer to that problem: high-performance lithium-ion cells that charge from any standard USB-C cable, hold a steady 1.5V throughout their discharge, and are built to go more than 1,000 cycles before they wear out.

This is not a typical rechargeable AA. Where older NiMH rechargeables suffered from lower voltage output and noticeable capacity fade, the Paleblue design delivers the same full-voltage performance you expect from a premium alkaline — without the constant replacement cost or the waste. Whether you are stocking up for a tour, keeping your home studio running efficiently, or just tired of last-minute battery runs before a rehearsal, this 4-pack is a genuinely smart long-term investment.

Key Highlights

• 4-pack of AA lithium-ion batteries with built-in USB-C charging ports
• No external charger required — any standard USB-C cable works
• Reaches 80% capacity in approximately 75 minutes
• Rated for over 1,000 recharge cycles
• Consistent 1.5V output with no voltage drop as the battery discharges
• Built-in LED charge indicators on each battery
• Includes a rugged, reusable storage case to keep all four batteries organized
• Compatible with musical gear, wireless packs, tuners, and general household devices

Great Fit For

• Guitar and bass wireless systems that run on AA batteries
• Clip-on chromatic tuners and headstock tuners
• Microphone receivers and handheld wireless vocal systems
• Keyboard players powering portable instruments or controller accessories
• Drummers and percussionists using electronic triggers or clip-on tuners
• Home studio musicians who want reliable, low-maintenance power on hand
• Touring players and road techs managing high battery turnover on the road

On Stage and In the Studio

The 4-pack format makes this practical as a full rotation solution: keep two in use and two on the charger, and you will rarely be caught without a fresh set ready. The LED charge indicators on each battery make pre-show prep a quick and confident process — no guessing, no squinting at a vague indicator light on a separate charging unit.

The rugged storage case included with each 4-pack is a small but genuinely useful detail. It holds all four batteries and a charging cable in one compact unit, which makes it easy to toss in a gig bag, backpack, or road case and always know where your backup power is. For musicians who rely on AA-powered wireless gear night after night, this is the kind of low-friction, high-reliability solution that earns its place in the workflow fast.

Specifications