Effective solutions
When it comes to new trends like the rapidly growing number of cordless devices, having an experienced partner is an advantage. Our ideas for power supply in the headset market, for example, or in the sports and fitness sector, prevail with longevity, reliability and innovative features. Whether for use in hearables (such as earbuds), fitness trackers, pulse meters or health monitoring, by means of rechargeable Lithium-Ion button cells, your customers are always well equipped.
1. Which rechargeable battery is used in earbugs?
Most rechargeable earbugs / covert earpieces use small lithium‑ion polymer (Li‑Po) rechargeable batteries or mini 3.7V Li‑ion button cells.Common types include:
- 3.7V small Li‑Po batteries (built‑in rechargeable cells)
- LIR44, LIR621, LIR521, LIR1220 (rechargeable lithium button cells)
2. What is the rechargeable battery life of earbugs?
- Continuous working time: about 4–10 hours per full charge
- Standby time: up to 20–48 hours
- Battery lifespan (charge cycles): can be recharged 300–500 times before capacity drops
Lithium-Ion Button Cells
Powerful and long-lasting power supply for wearables and other mobile applications with highest energy density.
Why PKCell LIR1220 3.7V rechargeable lithium battery is recommended for earbugs:
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Perfect size & shape
LIR1220 is a small, thin button battery that fits easily inside the tiny, compact body of most covert earbugs and mini earpieces. -
Correct voltage (3.7V)
Many modern rechargeable earbugs are designed for 3.6V–3.7V lithium power. The PKCell LIR1220 matches this voltage, so it works safely and stably. -
Rechargeable & cost-effective
It can be recharged hundreds of times, so you don’t need to buy disposable batteries frequently. This is very convenient for daily use. -
Stable discharge performance
It provides consistent power for clear sound and stable working performance, which is important for reliable communication in earbugs. - Light weight
The battery is very light, so it doesn’t make the earbug heavy or uncomfortable to wear in the ear.
Other Application samples of
PKCell Lithium-ion Button Cell Battery
- Earbuds
- Smart Watch
- Fitness Tracker
- Sensors
- Data Glasses
