Specifications:

• Type: AA
• Chemistry: Alkaline
• High-drain cutoff: 1.2V
• Low-drain cutoff: 1V
• Notes: Gradual voltage decline. Can power low-drain devices down to ~0.8V.

Specifications:

• Type: AAA
• Chemistry: Alkaline
• High-drain cutoff: 1.2V
• Low-drain cutoff: 1V
• Notes: Similar characteristics to AA alkaline, but smaller size and capacity.

Specifications:

• Type: C
• Chemistry: Alkaline
• High-drain cutoff: 1.2V
• Low-drain cutoff: 1V
• Notes: Larger capacity than AA, often used in medium-drain devices.

Specifications:

• Type: D
• Chemistry: Alkaline
• High-drain cutoff: 1.2V
• Low-drain cutoff: 1V
• Notes: Largest common cylindrical alkaline, high capacity for long-lasting power.

Specifications:

• Type: 9V
• Chemistry: Alkaline
• High-drain cutoff: 7.5V
• Low-drain cutoff: 6V
• Notes: High-drain devices often fail at 7-7.5V. Smoke alarms may work down to ~6V.

Specifications:

• Type: CR2032
• Chemistry: Lithium
• High-drain cutoff: 2.6V
• Low-drain cutoff: 2.4V
• Notes: Used in medical devices, LED lights. Remotes and clocks may work down to ~2.4V.

Specifications:

• Type: CR2025
• Chemistry: Lithium
• High-drain cutoff: 2.6V
• Low-drain cutoff: 2.4V
• Notes: Used in power-hungry gadgets. Key fobs and small remotes may function down to ~2.4V.

Specifications:

• Type: CR2016
• Chemistry: Lithium
• High-drain cutoff: 2.5V
• Low-drain cutoff: 2.3V
• Notes: Used in LED lights, glucose monitors. Watches and car remotes may work down to ~2.3V.

Specifications:

• Type: CR2450
• Chemistry: Lithium
• High-drain cutoff: 2.6V
• Low-drain cutoff: 2.4V
• Notes: Used in sensors and LED devices. Clocks and remotes may function down to ~2.4V.

Specifications:

• Type: CR1632
• Chemistry: Lithium
• High-drain cutoff: 2.5V
• Low-drain cutoff: 2.3V
• Notes: Used in wearables and smart keys. Some low-drain applications may work down to ~2.3V.

Specifications:

• Type: Li-ion 3.7V
• Chemistry: Lithium-ion
• High-drain cutoff: 3.5V
• Low-drain cutoff: 3.2V
• Notes: Common in rechargeable devices. Nominal voltage is 3.6V or 3.7V. Full charge is 4.2V.