KENT CamEye is powered by an in-built 3000 mah battery which can hold a substantial amount of charge that lasts up to a considerable number of hours on stand by mode. The device gets charged when the car is on trip and is plugged on to a charger (provided in packaging). As soon as the car is parked the device stops getting current from the car charger and goes into stand by mode to avoid battery draining of the device. The device’s internal battery could sustain this standby mode for prolonged periods. In case you want to conserve the battery further, you can shutdown the device through your App. Please note that in the shudown mode you won't be able to access any of the device's features. The installation type is ignition live power supply means one which is only able to provide power to the device when the vehicle's ignition is on and running. Hence, being a non-OBD installation, KENT CamEye will not impact vehicle battery.