Cordless phones use many different types of rechargeable batteries, depending on the manufacturer and phone model. Phones are shipped with the battery charge nearly depleted so it’s important to fully charge the battery, usually overnight, before you use the phone. It may take several charge cycles to maximize your battery’s charge. Once charged, the battery should last anywhere from one to three years based on your usage and treatment of the battery. Writer Bio

How Long Do Cordless Phone Batteries Last  - 85