The Skydiver's Guardian Angel

Like every electronic unit with battery, the lifetime of the battery depends on the usage and the storage time (capacity loss is less than 1% per year) although you will do at least 700 jumps or 4 years with a battery in normal work conditions. The battery performance will of course be impacted in function of how you use the unit's features, switch ON for one jump a day or store it for years. For example, we have Vigils® still running with more than 1.200 jumps with the same battery.