Watt Battery

Know what you've got left using critical power. WattBattery is a clean, glanceable read of your remaining hard-effort capacity — shown as a simple battery on your Edge. The harder you push above your sustainable power, the faster the battery drains. Ease off and it recharges. Two layers of information at a glance: - Battery fill — how much capacity you have left (green/amber/red) - Battery outline — what state you're in right now (red = depleting, green = recovering, black = steady) Display mode is your choice: - Percent (default) — classic W'balance remaining - Time — seconds-precise time to empty when you're depleting, time to recover when you're rebuilding Use it to: - Time attacks — know whether you can go again - Pace climbs — control your battery to the top - Don't blow up — read the warning before you crack - Train smarter — dont start that next interval until you recovery Two essentials to enter once: - Critical Power (CP) — the highest power you can sustain without fading - W' (in kilojoules) — the size of your above-CP battery Optional settings: - Display Mode — percent or time - Recovery Target — 90%, 95%, or 99% W' (when to consider yourself "recovered") - Smoothing — 5 or 10 seconds Free Critical Power calculator at www.enhanced-endurance.com if you don't already know your threshold. Built on the well-validated Skiba (2012) model also used by Golden Cheetah, WKO, and Xert. Numbers display inside the battery for clean readability at any size. Adapts to 1-up, 2-up, 4-up, 6-up Edge data screen layouts. Greys out cleanly when no power meter is connected. State persists through pauses, auto-pauses, and Edge restarts. Made by Enhanced Endurance — coaching cyclists who fit training into real life, not the other way around. Loved WattBattery? The best support is sharing with your cycling friends, leaving a review, or reaching out about coaching at www.enhanced-endurance.com.

v1.0.4 — Dark mode readability fix - Numbers inside the battery now have a contrasting outline in dark mode, keeping them readable across all power states. Light mode unchanged. v1.0.3 — Readability improvement - Increased text size inside the battery icon for better at-a-glance reading, especially on larger data field cells. Based on user feedback after v1.0.2 release. v1.0.2 — Display improvements - Text now displays inside the battery icon for better readability on small data fields - Battery outline changes color to show power state: red when depleting above CP, green when recovering - New Time Mode (toggle in settings): shows time-to-empty or time-to-recharge instead of percentage - New Recovery Target setting: choose 90%, 95%, or 99% W' as your "recovered" threshold — Fixed: W'balance now correctly preserves state when swapping the field between data screen cells during an active ride. Previously the field would reset to 100% when moved mid-ride. Suggested by community feedback. Thanks for the input.