F3b ePower
· v3.3
About
ePwr +Grade Is an accurate cycling estimated power for all device types. This is the same power calculation that is used in the DozenCycle (CIQ 2.0+ devices), but packaged as a simple data field. This is a companion datafield for DozenCycle and watches with IQ version 1.3/1.4.
Click the "More" link to expand this description page.
Provides 3 Custom IQ Graphs and 3 IQ session data
Est Power graph
% Grade graph
FTP graph (graph start after 20 minutes)
Activity Power data
Maximum Activity Power data
Max FTP data
This Data field needs to be added to the Bike app within your watch to view.
IINSTALL NOTES:
1.) If you update/install and you don't see the data field. Update or the install may require a restart of watch.
2.)Install instructions:
From the clock watch face, long press menu button (touchscreen long press screen)
“ACTIVITY” is the builtin-in that is desired to be set.(Run, Bike, Row, SUP or Swim)
In the main menu select: Settings -Activities &Apps- “ACTIVITY”-“Activity” Settings -Data Screens
Select first Screen: then
Set Layout to the entire screen
Set Field 1 to -ConnectIQ Fields-ePwr
Most watches are the same as described above, but there could be small differences.
Configuration Setup
Power Estimate Connect configuration variables.(defaults will be close but fine tuning will give reasonable accuracy)
Cycle and gear weight: is just that, body weight is grabbed from watch.
Crr (Coefficient Rolling resistance) : use this web site for your tire Crr: http://www.cyclingpowerlab.com/TyreSelection.aspx
Cd (CoeffiecentDrag ) A (frontal Area as meters squared)
http://www.cyclingpowerlab.com/CyclingAerodynamics.aspx
Show Power, Grade or Both: select value to display on the screen
Grade: Show Negative: using the "-" will reduce text size. use "." will keep text larger.
Grade: Show Decimal Values: display grade as "1.1" or "1".
Calculate Power Always: -With Cadence sensor:
--set to on to display/save power when not pedaling
--set to off to NOT display/save power when not pedaling
Calculate Power Always: -WITHOUT Cadence sensor:
-Set to off.
Install Issues:
Install Note 1: if you have the "app requires an update before install", hard reboot your watch TWICE and try again.
Install Note 2: If you update/install and you don't see the data field. Update or the install may require a restart of watch.
Install Note 3: If updating DozenCycle and get the "!" Uninstall and reinstall. Garmin Connect Update is leaving a 'stale' settings file.
What's new
View All my Award winning apps: https://apps.garmin.com/en-US/developer/4ca4351d-f24c-40e0-bc3e-b187972a7526/apps
Support ePower (help keep my effort going )
HOW TO: https://www.fbbbrown.com/dozen-data-fields/
ePower v3.3
• Minor updates
• Adds new Models
• Recompile with latest SDK to pull in all Garmin updates and IQ Fixes
• Using Connect IQ SDK-8.2.3-2025-08-11-cac5b3b21