3.7 V Li-ion Battery 30mAh~500mAh
Explore 3.7V Li-ion batteries ranging from 30mAh to 500mAh, 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
How is the capacity of a lithium battery defined?
The capacity of a lithium battery is measured in milliampere-hours (mAh). For example, if a battery is rated at 1000mAh, it means that the battery can supply 1mA current for 1000 hours, or 1000mA current for 1 hour. The larger the mAh value, the greater the battery capacity.
What are the main applications of 30mAh–500mAh lithium-ion batteries?
They are mainly used in wearable devices, Bluetooth earphones, smart bands, medical devices, IoT terminals, smart cards, portable sensors, wireless microphones, and electronic toys.
How long can a 30mAh–500mAh battery last?
The runtime depends on the device’s power consumption. For example, a Bluetooth earphone (approx. 15mA power consumption) can run for about 6 hours with a 100mAh battery. The exact duration should be matched to the device’s consumption and usage scenario.
Can these small-capacity batteries support high-current discharge?
Standard cells can support 0.5C–1C discharge (for example, a 100mAh cell can discharge at 50–100mA). If higher discharge rates are required (e.g., >3C), customized designs are available.
What is the cycle life of these batteries?
Under normal conditions, they can be cycled 300–500 times while retaining ≥80% of their initial capacity.
Are these small-capacity lithium batteries safe?
Smaller-capacity batteries store less energy, and most finished batteries come with a protection circuit module (PCM/BMS) that includes safeguards against overcharge, over-discharge, overcurrent, and short circuits.
Do these batteries support fast charging?
The standard charging rate is 0.2C–1.0C (for example, a 100mAh battery is recommended to charge at 20–100mA), which supports normal USB charging. Fast-charging requirements can be met through special customization.
