1,438 Wh Is How Many mAh?

Quick Answer: 1,438 Wh = 388,648.65 mAh (at 3.7V Li-ion)

Watt-hours
=
Milliamp-hours
Auto-fills voltage
Nominal battery voltage
Conversion Result
1,438 Wh = 388,648.65 mAh

At 3.7V nominal voltage

1,438 Wh = 388,648.65 mAh

Step-by-step:

  1. Formula: mAh = Wh × 1,000 / V
  2. 1,438 × 1,000 / 3.7 = 388,648.65 mAh

Similar Wh to mAh Conversions

Values close to 1,438 Wh (at 3.7V):

Wh mAh (at 3.7V)
1,188 Wh 321,081.08 mAh
1,238 Wh 334,594.59 mAh
1,288 Wh 348,108.11 mAh
1,338 Wh 361,621.62 mAh
1,388 Wh 375,135.14 mAh
1,438 Wh 388,648.65 mAh
1,488 Wh 402,162.16 mAh
1,538 Wh 415,675.68 mAh
1,588 Wh 429,189.19 mAh
1,638 Wh 442,702.7 mAh
1,688 Wh 456,216.22 mAh

See Also

Frequently Asked Questions

How many mAh is 1,438 Wh?

1,438 Wh equals 388,648.65 mAh at 3.7V (Li-ion nominal voltage). The mAh value changes with different voltages.

How do I convert 1,438 Wh to mAh?

Use the formula: mAh = Wh × 1,000 / V. At 3.7V: 1,438 × 1,000 / 3.7 = 388,648.65 mAh.

Does 1,438 Wh equal the same mAh at every voltage?

No. Higher voltage means fewer mAh for the same Wh. Use the calculator above to try different voltages.

Formula: mAh = Wh × 1,000 / V. 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