Button battery equivalent chart

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 225 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V); Duracell CR2032 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)
• 235 mAh — Energizer CR2032 datasheet, PDF p. 1 (15 kΩ, to 2.0 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 170 mAh — Energizer CR2025 datasheet, PDF p. 1 (15 kΩ, to 2.0 V) (checked 2026-09-26)
• 165 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V) (checked 2026-09-26)
• 150 mAh — Duracell CR2025 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 100 mAh — Energizer CR2016 datasheet, PDF p. 1 (30 kΩ, to 2.0 V) (checked 2026-09-26)
• 90 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V) (checked 2026-09-26)
• 110 mAh — Duracell CR2016 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 175 mAh — Energizer 357 datasheet, PDF p. 1 (6.5 kΩ continuous, to 1.3 V); Energizer 303 datasheet, PDF p. 1 (6.5 kΩ continuous, to 1.3 V); Renata 303 datasheet, PDF p. 1 (8.25 kΩ, to 1.2 V) (checked 2026-09-26)
• 160 mAh — Renata 357 datasheet, PDF p. 1 (5.62 kΩ, to 0.9 V) (checked 2026-09-26)
• 170 mAh — Duracell D303 / D357 datasheet, PDF p. 1 (6.8 kΩ, to 0.9 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 41 mAh — Energizer 392 datasheet, PDF p. 1 (15 kΩ continuous, to 1.3 V); Energizer 384 datasheet, PDF p. 1 (15 kΩ continuous, to 1.3 V) (checked 2026-09-26)
• 45 mAh — Renata 392 datasheet, PDF p. 1 (18.2 kΩ, to 1.2 V); Renata 384 datasheet, PDF p. 1 (18.2 kΩ, to 1.2 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 80 mAh — Renata 389 datasheet, PDF p. 1 (15 kΩ, to 1.2 V); Renata 390 datasheet, PDF p. 1 (15 kΩ, to 1.2 V) (checked 2026-09-26)
• 85 mAh — Energizer 389 datasheet, PDF p. 1 (15 kΩ continuous, to 1.3 V) (checked 2026-09-26)
• 84 mAh — Energizer 390 datasheet, PDF p. 1 (15 kΩ continuous, to 1.2 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 24 mAh — Energizer 377 datasheet, PDF p. 1 (47 kΩ continuous, to 1.2 V); Renata 377 datasheet, PDF p. 1 (34.8 kΩ, to 0.9 V) (checked 2026-09-26)
• 26 mAh — Energizer 376 datasheet, PDF p. 1 (45 kΩ continuous, to 1.3 V) (checked 2026-09-26)
• 27 mAh — Renata 376 product page (test load not stated on the page) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 20 mAh — Energizer 364 datasheet, PDF p. 1 (68 kΩ continuous, to 1.3 V) (checked 2026-09-26)
• 19 mAh — Renata 364 datasheet, PDF p. 1 (47.0 kΩ, to 0.9 V) (checked 2026-09-26)

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 150 mAh — Energizer A76 datasheet, PDF p. 1 (7.5 kΩ continuous, to 0.9 V) (checked 2026-09-26)
• 170 mAh — Duracell 76A / LR44 datasheet, PDF p. 1 (6.8 kΩ continuous, to 1.0 V) (checked 2026-09-26)