02charge log
Smart Charging & Cost Analytics
Log every session, compare home and DC fast charging costs, and see exactly what you save versus gas.
- Page
- 3
- Zones
- 4
- Fields
- 14
Purpose
Turns charging receipts into real numbers. Log each session, compare home electricity with public DC fast charging, then run the savings strip to see the money and energy saved against a comparable gas car.
Layout zones & field markers
Zone 1 · Top row, four mini cards
Rate cards
- Number box
Home rate
$/kWh, off-peak if you have it
- Number box
DC fast rate
$/kWh or per minute
- Number box
Gas price
$/gal, local average
- Number box
Gas car MPG
A comparable gas model
Zone 2 · Middle, full width
Charging session log
- Log table
Date and location
- Chip select
Type: Home, L2, DC
Three tiny circles, one tick per session
- Log table
Start % and end %
- Log table
kWh added, $/kWh and cost
12 rows in US Letter and tablet, 14 in A4
Zone 3 · Bottom left card
Monthly summary
- Number box
Total kWh
- Number box
Total spent
- Number box
Miles driven
- Number box
Cost per mile
- Gauge
Home vs public split
Shade the home share on a 10-segment bar
Zone 4 · Bottom right card
Savings vs gas
- Formula strip
Five fill-in formula rows
The money saved row is highlighted in pink
Formulas printed on the page
- Gas cost for the same miles
- miles ÷ MPG × gas price
- EV charging cost
- kWh × your $/kWh
- Money saved
- gas cost − EV cost
- Gallons avoided
- miles ÷ MPG
- Energy saved
- gallons avoided × 33.7 kWh − kWh used
Design notes
- Rate cards sit above the log, so every row can be priced without flipping pages.
- 33.7 kWh is the EPA energy equivalent of one gallon of gasoline, printed right on the strip.
- Rows are sized for handwriting, and A4 adds two extra rows.
- The home vs public bar gives a quick visual of where the money goes.
Smart Charging & Cost Analytics
Off-peak if you have it
Or per minute, see the app
Your local average
A comparable gas model
Shade one segment for every 10% you charged at home.