godsonbattery

  Emergency Lighting Batteries All emergency lights and illuminated emergency exit signs use batteries to power the lights. To ensure the continuous readiness and operation of the emergency lights, these batteries are rechargeable. The circuitry within the emergency lights both charges the batteries and ensures that they remain charged. Types of batteries used in emergency lights There are two types of batteries used in emergency lights ： 1. Sealed lead-acid batteries (same type as for cars) 2. Nickel-cadmium batteries Sealed lead-acid batteries are the oldest rechargeable technology. They are called lead-acid because they contain lead alloy plates that are immersed in acid. The acid breaks down the plates and produces electrons that are charged, i.e. electricity. More recently, the technology of lead-acid batteries has been improved to allow for fully sealed cells that do not require the addition of water to maintain the acidity. How we choose the emergency light batteries The two typ