3,021 mAh Is How Many Wh?

Quick Answer: 3,021 mAh = 11.1777 Wh (at 3.7V)

Milliamp-hours
=
Watt-hours
Auto-fills voltage
Nominal battery voltage
Conversion Result
3,021 mAh = 11.1777 Wh (at 3.7V)

At 3.7V nominal voltage

3,021 mAh = 11.1777 Wh (at 3.7V)

Step-by-step:

  1. Formula: Wh = mAh × V / 1,000
  2. 3,021 × 3.7 / 1,000 = 11.1777 Wh

Similar mAh to Wh Conversions

Values close to 3,021 mAh (at 3.7V Li-ion):

mAh Wh (at 3.7V)
521 mAh 1.9277 Wh
1,021 mAh 3.7777 Wh
1,521 mAh 5.6277 Wh
2,021 mAh 7.4777 Wh
2,521 mAh 9.3277 Wh
3,021 mAh 11.1777 Wh
3,521 mAh 13.0277 Wh
4,021 mAh 14.8777 Wh
4,521 mAh 16.7277 Wh
5,021 mAh 18.5777 Wh
5,521 mAh 20.4277 Wh

See Also

Frequently Asked Questions

How many Wh is 3,021 mAh?

3,021 mAh equals 11.1777 Wh at 3.7V (Li-ion nominal voltage). The exact Wh depends on the battery voltage: Wh = mAh × V / 1,000.

How do I convert 3,021 mAh to Wh?

Multiply 3,021 by the battery voltage, then divide by 1,000. At 3.7V: 3,021 × 3.7 / 1,000 = 11.1777 Wh.

Is 3,021 mAh allowed on a plane?

At 3.7V, 3,021 mAh = 11.1777 Wh. Airlines allow lithium batteries up to 100 Wh in carry-on luggage. Batteries between 100–160 Wh require airline approval. Batteries over 160 Wh are prohibited on passenger aircraft.

Formula: Wh = mAh × V / 1,000. Results assume nominal battery voltage.

Conversion factors verified against NIST, BIPM Based on SI definitions (BIPM). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes