Valve regulated lead-acid battery used in most of SafeLine products that includes battery backup. The battery produces 12V/0.8 Ah which is sufficient to supply telephones and emergency lights in the event of a power outage. Maximum discharge current is 12 A.

The battery is leak-proof and neither can, nor should, be re-filled. The battery should never be fully discharged, or the capacity will be significantly reduced. Estimated lifespan under standard conditions (approx. +25°C): 2-3 years.