If you're seeking a durable and reliable power solution for your CrystalSky monitors or Cendence remote controller, look no further than the WB37 4920mAh Intelligent Battery. Specifically engineered for these devices, this high-capacity, rechargeable lithium-ion battery ensures optimal performance and a perfect fit. Boasting a robust capacity of 4920mAh, this intelligent battery provides long-lasting power, reducing the need for frequent recharging. It's designed to deliver excellent discharge performance, even in low-temperature conditions, and charges swiftly to keep your devices up and running. With one fully charged WB37 4920mAh Intelligent Battery, you can expect approximately four to five hours of operating time for a 7.85"" CrystalSky monitor, five to six hours for a 5.5"" CrystalSky monitor, and around four hours for a Cendence remote controller. This makes it an ideal choice for extended use, whether you're out in the field or in the studio.