When it comes to lithium-ion (Li-ion) paristot, you may have noticed that some are labeled as 3.6V, while others are labeled as 3.7V. This small difference in voltage labeling can often cause confusion among customers. Kuitenkin, the truth is that “3.6V ja 3.7V Li-ion batteries are essentially the same product”. Let’s dive deeper into why this is the case and what it means for you.
Why the Voltage Difference?
The nominal voltage of a standard Li-ion battery is typically “3.7V”. Kuitenkin, due to international shipping regulations, especially those set by the [International Air Transport Association (IATA)], batteries cannot be shipped at a fully charged state. This is because Li-ion batteries are more chemically active when fully charged, which increases the risk of incidents during transportation.
To comply with these regulations, manufacturers often ship Li-ion batteries at a [partial state of charge], with voltages ranging between [3.55V and 3.65V]. This is why some batteries are labeled as 3.6Vinstead of 3.7V. The lower voltage labeling is primarily for [shipping and regulatory purposes], ensuring that the batteries meet safety standards for international transport.
The Impact on Watt-Hour (Wh) Rating
Another reason for the voltage labeling difference is related to the [Watt-hour (Wh)] rating of the battery. The Wh rating is a measure of the battery’s energy capacity and is calculated using the formula.
Wh = Voltage (V) × Capacity (Ah)
For high-capacity batteries (those over 20Wh), international shipping regulations classify them as 【Dangerous Goods (DG)】. By labeling the battery with a slightly lower voltage (e.g., 3.6V instead of 3.7V), the calculated Wh rating is reduced, which can help avoid the stricter shipping requirements for DG goods. This is done to make the shipping process easier and more cost-effective for customers.
Are 3.6V and 3.7V Batteries the Same?
Kyllä, 3.6V and 3.7V Li-ion batteries are the same product. The difference in labeling is purely for regulatory and shipping purposes. Whether a battery is labeled as 3.6V or 3.7V, it will perform the same way in your device, as both refer to the same nominal voltage and chemistry.
Key Takeaways
1. 3.6V and 3.7V Lithium-Ion Batteries are identical in terms of performance and chemistry.
2. The difference in labeling is due to ‘shipping regulations’ and the need to reduce the Wh rating for high-capacity batteries.
3. Manufacturers label batteries as 3.6V to comply with IATA regulations and make international shipping easier for customers.
By understanding these nuances, you can make more informed decisions when purchasing Li-ion batteries and ensure compliance with shipping regulations. Whether you see 3.6V or 3.7V on the label, rest assured that you’re getting the same high-quality product!