Klvr will demonstrate its Charger Pro rechargeable battery solution at ISE 2026 (stand 5N900), designed to reduce costs and environmental impact for live entertainment and pro AV markets.
The system is designed to enable sound engineers and AV professionals in music venues, production studios, conference halls, universities, houses of worship and hospitality to eliminate single-use batteries, according to the company. Klvr was founded by sound engineers and music artists.
The solution features a lightweight, 19in rack-mounted charger and high-performance AA and AAA batteries designed for use in wireless microphones, in-ear monitoring and other devices. Each Klvr Charger Pro rack unit has a capacity of 48 AA or AAA batteries. AA batteries recharge in under three hours and AAA in two hours, the company says.
Klvr’s custom 1.5V Li-Ion batteries each contain 1,200 charging cycles and are designed to offer 30 percent higher runtime than regular commercial rechargeables, according to the manufacturer. The batteries feature a linear discharge curve and monitoring system designed to maximise performance and power visibility throughout the battery lifetime.
An intuitive front display and Klvr Control system is designed to enable AV professionals to check battery levels, recharge times and adjust settings from connected laptops. Klvr Charger Pro also includes a 48-battery capacity Klvr Pouch for transport.
The company says disposable AA/AAA batteries are still widely used in professional environments due to a lack of feasible rechargeable options, with many thrown away with excess capacity remaining. Klvr says proprietary rechargeable solutions from major equipment manufacturers can be costly and incompatible with devices from different vendors, whilst consumer-grade rechargeables may be insufficient in professional environments.
Antonis Stantzos, CTO of Greek broadcaster Alpha TV, said: “We used to rely on 20,000 disposable batteries every year to keep mics and other devices running during live productions – it was expensive, messy, and a constant headache for our team. Now we use just over 400 rechargeable Klvr batteries, giving us reliable capacity and long-term cost savings.”
Trond Hernes, stage manager of the Norwegian Radio Orchestra (KORK), added: “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. Charger Pro gives us rock-solid performance and complete visibility into battery life and recharge cycles.”
Stian Sagholen, CEO and founder of Klvr, added: “AV teams need a pro-grade, reusable alternative that they can rely on in critical live environments. We’re seeing a surge in momentum as users see first-hand how switching to Klvr helps them lower costs, simplify their work and deliver better performances on any stage.”
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