Lenovo TB305FU: $1 a year to run
This model (Computers) uses 3 kWh of electricity a year, which costs about $1 a year and $7 over 10 years at 21.0¢/kWh.
Energy use
3 kWh
per year
Running cost per year
$1
21.0¢/kWh
Running cost over 10 years
$7
Efficiency rank
5 / 1,748
Product details
| Type | Slate/Tablet |
|---|---|
| Battery capacity (Wh) | 19.6 |
| Available since | February 20, 2025 |
Compared with the average model (Computers), this one saves about $4 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Amazon RL3YT5 | 3 | $1 |
| MAXHUB XPG14M | 3 | $1 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology