How long will a SmartSense sensor's battery last? BMPRO Customer Support December 14, 2021 02:55 The SmartSense senor battery will last one year on average depending on the operating temperatures. The battery will typically last longer in warmer environments. Related articles Is the magnet of the SmartSense strong enough to leave on a caravan gas bottle full time? How does SmartSense measure the gas levels inside a gas bottle? How do I remove the SmartSense sensor from a gas bottle without damaging the rubber pad? I want to upgrade my caravan to use lithium batteries. What products are recommended? How do I replace a SmartSense sensor's batteries? Comments 0 comments Please sign in to leave a comment.