Battery Lifetime Prediction Widget

This widget calculates a battery lifetime prediction for different types of usage. The lifetime-calculation is based on the following "100% charged" values: - GPS & GLONASS: 15h - GPS: 20h - Activity Tracking: 28d - Clockusage only: 90d Will update this values based on my experiences with my own FR920xt and your feedback. Please note that this is a rough estimation. The battery lifetime depends on a lot of influencing factors like number of cycles, operating time or outside temperature. Versions & Corrections: v 1.4: changed calculation basis for battery lifetime (more defensive) v 1.6: "division by zero"-problem at battery level 0% solved v 1.7: fixed problems with "on update" v 1.9: Battery percentage with 1 decimal place v 2.2: No refresh within the app for no battery consumption after startup v 2.3: Widget-Version v 2.6: more defensive lifetime calculation. More efficient coding for less CPU-usage at onUpdate v 2.7: changed calculation GPS&GLO 15h, Act-Tracking 28days v 2.9: corrected demo coding entries v 3.0: changed in code documentation v 3.2: improved algorithm (less CPU usage) v 3.28: corrected calculation problem at 0.0% capacity v 3.31: changed accu capacity calculation - displays now the percentage of rest-lifetime instead of percentage based on battery-voltage v 3.32: support for epix v 3.34: changes for SDK compatibility v 3.3.5 changed for SDK compatibility