Disposable Battery Performance is a crucial factor when selecting batteries for various electronic devices. Different types of disposable batteries offer varying capacities, voltages, and environmental compliance, making it essential to understand their characteristics.
1. Carbon Zinc Batteries
Carbon zinc batteries are economical and widely used for low-current applications. They come in AAA (7#) and AA (5#) sizes:
- AAA (7#): Continuous discharge at 3.9Ω load until 0.9V, lasting 25–35 minutes.
- AA (5#): Continuous discharge at 3.9Ω load until 0.9V, lasting 50–90 minutes.
Environmental Note:
- P-Type: Eco-friendly, RoHS and SGS certified, longer discharge time, long shelf life, leak-resistant, suitable for high-current applications.
- C-Type: Non-eco-friendly, shorter shelf life, prone to leakage, suitable for low-current applications. P-Type batteries have largely replaced C-Type in the market.
2. Alkaline Zinc Manganese Batteries
Alkaline batteries provide higher energy density and longer discharge times than carbon zinc batteries.
- AAA (7#): 120–150 minutes at 3.9Ω load until 0.9V.
- AA (5#): 300–360 minutes at 3.9Ω load until 0.9V.
These batteries are mercury-free and environmentally safe.
3. 3V Lithium Manganese Batteries
Commonly used models: CR2032, CR2025, CR2016.
- Positive and negative electrodes are made of steel casing.
- Ideal for small electronics, medical devices, and calculators.
4. 1.5V Silver Oxide Batteries
Common models: AG13, AG3, AG10.
- Compact and mercury-free.
- Higher cost, often used in watches, hearing aids, and small precision devices.
5. Nickel-Metal Hydride (Ni-MH) and Nickel-Cadmium (Ni-Cd) Batteries
- Ni-MH: Eco-friendly, higher capacity than Ni-Cd.
- AAA: 600–800 mAh
- AA: 1000–2400 mAh
- Ni-Cd: Less eco-friendly.
- AAA: 300–500 mAh
- AA: 600–800 mAh
Batteries can be single cells (1.2V) or combined into packs (e.g., 2.4V, 8.4V) and are available in standard sizes: AAA, AA, C, D, SC, etc.