How long is the battery lifespan of the Kami doorbell camera? The battery lifespan of the Kami doorbell camera is good for 2 to 3 months. Related articles How long does it take the battery to recharge the Kami Doorbell batteries? How to reset the Kami doorbell camera? How many batteries does the Kami Doorbell use? Charging and Inserting the battery of the Kami Doorbell Camera Kami Doorbell Camera Manual