Lenovo TB520FU: $1 a year to run
This model (Computers) uses 7 kWh of electricity a year, which costs about $1 a year and $15 over 10 years at 21.0¢/kWh.
Energy use
7 kWh
per year
Running cost per year
$1
21.0¢/kWh
Running cost over 10 years
$15
Efficiency rank
45 / 1,748
Product details
| Type | Slate/Tablet |
|---|---|
| Battery capacity (Wh) | 39.1 |
| Available since | May 1, 2024 |
Compared with the average model (Computers), this one saves about $4 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Brady RT310-L0 | 7 | $1 |
| Samsung SM-X218U | 7 | $1 |
| ASUS CM3001DM2 | 7 | $1 |
| Zebra ET40AB | 7 | $1 |
| Samsung SM-X930 | 7 | $1 |
| Lenovo TB312FU | 6 | $1 |
| Samsung SM-X210 | 6 | $1 |
| Lenovo TB390FU | 6 | $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