A battery outdoor security camera faces weather, sun, and constant motion-trigger activity, so battery health and connectivity are the main drivers of real-world lifespan. Typical issues include batteries losing capacity, charging contact corrosion, Wi-Fi instability, and image sensor degradation that shows up as poor night video.
Repair is usually limited to swapping batteries, cleaning contacts, improving Wi-Fi coverage, or replacing mounts-often inexpensive and under the threshold. If the camera body still works well and only the battery or mount is failing, repair is an easy win.
Replacement becomes the better option when the camera regularly drops offline despite good network conditions, the sensor produces soft/noisy footage, or the unit becomes unreliable in cold weather. Also account for subscription costs and planned retention features: if you're paying monthly, it can be rational to upgrade sooner to reduce missed events and false alerts.