3.8 V Li-ion Battery(Upper voltage 4.35V)
Explore 3.8V Li-ion batteries , ideal for lightweight devices like fitness trackers, medical equipment, and wireless sensors. With high energy density and reliable performance, these batteries deliver precision and longevity. iRay energy provides high-quality solutions for optimal compatibility and durability. Choose yours today for dependable power.
FAQs
What is the main difference between a 3.8 V Li-ion battery and a standard 3.7 V battery?
A 3.8 V Li-ion battery has a higher nominal voltage and can be charged up to 4.35 V, compared to 4.2 V for standard 3.7 V cells. This provides higher energy density and longer runtime in the same size.
Why is the charging upper limit set at 4.35 V for 3.8V battery?
The 4.35 V upper voltage limit is determined by the electrode materials and electrolyte system, ensuring that the battery can operate safely and stably at higher voltage while maintaining a reasonable cycle life.
What advantages does a 3.8 V Li-ion battery offer for portable devices?
It provides higher energy density, meaning smaller size or lighter weight for the same capacity, making it ideal for smartphones, wearables, and other space-sensitive electronic devices.
Can I replace a 3.7 V battery with a 3.8 V one in my device?
Not directly. The device must support charging up to 4.35 V and be compatible with the 3.8 V battery system. If the device is not designed for it, using a 3.8 V battery may cause charging issues or safety risks.
How does the cycle life of a 3.8 V battery compare with that of a 3.7 V battery?
If always charged to 4.35 V, a 3.8 V battery usually has a slightly shorter cycle life. However, many applications use partial charging strategies (e.g., charging only up to 4.2 V) to balance longevity and energy density.
Are 3.8 V Li-ion batteries safe for consumer electronics?
Yes. With proper battery management systems (BMS) and protection circuits, 3.8 V batteries comply with international safety standards such as IEC 62133, UN38.3, and UL.
How much higher is the energy density compared with 3.7 V batteries?
3.8 V Li-ion batteries can achieve about 5–10% higher energy density in the same volume compared to 3.7 V batteries.
What are the most common applications of 3.8 V Li-ion batteries?
They are widely used in smartphones, tablets, wearable devices, drones, and other electronic products that require high energy density and compact size.
Do 3.8 V batteries operate within the same temperature range as 3.7 V batteries?
Yes, typically –20℃ to 60℃ for discharge and 0℃ to 45℃ for charging. However, high-voltage chemistry may show slightly different performance under extreme temperatures.
