The Norwegian company's Charger Pro solution is saving live sound engineers and touring crews thousands on single-use batteries whilst cutting environmental waste.
If you’ve ever toured, worked live sound, or managed a broadcast facility, you know how many disposable batteries are used—thousands burning through budgets and ending up in landfill, often still with capacity.
Norwegian company Klvr has built a rechargeable battery solution specifically for professional audio environments that’s gaining traction with touring crews, broadcasters, and live venues. The Charger Pro system addresses the reliability issues that have kept sound engineers relying on disposables for wireless mics, in-ear monitors, and other critical gear.
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Greek broadcaster Alpha TV provides a striking example, having relied on 20,000 disposable batteries every year to keep mics and devices running during live productions. Now they use just over 400 rechargeable Klvr batteries with reliable capacity and long-term cost savings.
“It was expensive, messy, and a constant headache for our team,” said Antonis Stantzos, CTO of Alpha TV. “It’s a no-brainer for any broadcaster.”
The problem with existing solutions is that consumer-grade rechargeables don’t deliver sufficient voltage or reliability for professional use, and proprietary rechargeable systems from major manufacturers are costly and incompatible across different brands. Disposables remain the default despite the expense and waste.
Klvr was founded by sound engineers and music artists who understood these limitations firsthand. Their custom 1.5V Li-Ion batteries each contain 1200 charging cycles and offer 30% higher runtime than regular commercial rechargeables, with a linear discharge curve and monitoring system for maximum performance visibility.
“You can’t risk using commercial rechargeables when performers are on stage—they’re far too unreliable and could cause devices to cut at any moment,” said Trond Hernes, stage manager of the Norwegian Radio Orchestra. “Charger Pro gives us rock-solid performance and complete visibility into battery life and recharge cycles.”
Each Charger Pro rack unit (19″ rack-mounted) handles 48 AA or AAA batteries simultaneously, recharging AAs in under 3 hours and AAAs in just 2 hours. An intuitive front display and Klvr Control system allow engineers to check battery levels, recharge times, and adjust settings from connected laptops.
For touring crews, the compact and lightweight Charger Pro system is key. “Shipping and travel costs rack up quickly when you’re taking kilos of production gear on tour,” said Mikael Svensson, backline engineer at Overkill Backline, who works with artists including Per Gessle and Roxette. “Charger Pro is light, compact and perfect for touring. The batteries work across any kind of device, so you’re not locked into proprietary products from audio manufacturers.”
The system includes the Klvr Pouch—a lightweight 48-battery capacity case that streamlines travel through airport security or to remote locations.
Visit Klvr to learn more.
