LiPol Battery's Logolipol battery co. ltdDeutsch | Italiano | Online Shop


li polymer battery for smart strap


Li Polymer Battery for Smart Strap

When speaking through the embedded microphone, place your fingertips on your ears. It is a smart strap with a built-in 225mAh li polymer battery of 3.7V, allowing you to answer calls at your fingertips. 

Whether you are wearing a classic watch or an Apple Watch, Samsung Gear, or Pebble Time, you can replace the existing strap with it. However, because the LPC401740 li polymer battery is embedded in the belt, it cannot be returned. No one has ever lost a headset in their lifetime. 

Using this intelligent wristband equipped with a li polymer battery, you can put your phone alone in your pocket, and you can answer the phone by just raising your hand without having to carry any additional earphones or earphones. When you put your fingers on your ears, your fingers can transmit sound and block background noise. Therefore, you can hear unmistakable sounds in noisy places without worrying about other people listening. 

Fingertip communication method of smart strap 

When speaking through the microphone embedded in the intelligent wristband with its own li polymer battery 3.7V, you only need to put your fingertips on your ears to hear the caller's voice. 

The operation mode of the intelligent wristband equipped with a 3.7V li polymer battery The intelligent wristband receives voice signals from your mobile phone via Bluetooth. After receiving the voice signal, it will generate vibration through its body conduction unit, and the vibration will be transmitted to your fingertips through your hand. 

Since the transmission is carried out by throbbing, it will not cause harm to the human body. When you place your fingertips on your ears, the vibrations will echo to produce amplified sounds in the enclosed space of the ears. Smart strap sound quality test with low-capacity 225mAh li polymer battery. 

The blue image represents the original sound signal input, and the magenta image represents the sound signal when received through the fingertips. In voice transmission, the voice frequency range is about 2000 Hz. Within this range, the sound signal passing through the fingertip has little change from the original input sound signal.

Li Polymer Battery LPC401730 3.7V 225mAh Details

Battery Type
Part Number
Voltage @ Capacity
3.7V @ 225mAh 0.814Wh
UL1571 AWG28 50m*2
Cut-off Voltage
Thermistor (NTC)
8.0 x 38 x 48mm
Charge Temperature
0°C to +45°C
Discharge Temperature
-20°C to +60°C
Storage Temperature
-20°C to +45°C


Li Polymer Batteries 

model capacity
Inner radius
external radius (mm) voltage (v)
LPCV311331 90 3.1 81.8 84.9 3.7
LPCV381447 235 3.8 30.8 34.6 3.8
LPCV250830 40 2.5 52.0 54.8 3.7
LPCV280848 80 2.8 16.6 19.4 3.7
LPCV400942 125 4.0 74 78 3.7
LPCV382438 400 3.8 25 28.8 3.7

Fill out my online form.


The other lipo battery applications

Rebar Detecter | Protable Hardness Tester | Flaw Detector | Moisture Instrument in Concrete | Bike Wireless Computer | Mobile Sensors | Wris-wom Swimming Wearaable | Facial Motion Capture | Fully Automated Pull-Off Tester | Navigation Device on Social Bicycles | Miro Jeweiry Box | Ultrasonic Imaging | Personal Shaving Cup | Smart Medivine Bottle | Smart Walkie-Talkies | Smart Sleep Glasses | Smart Assistant Watch | Mobile Projector | Fingerprint Padlock | Wireless Speaker System | Thinnest Foldable Bluetooth Mouse | Vehicle Monitoring Device | Car Gadget | Boogie Dice | Health Tracking Headband | Smart LED Light | Smart Bra | Handbag Light | Bike Safety Light | Hand Held and Esthetically Lamp | Power Dock | Fidget Controller Gadget | Camera Slider Track Dolly | Wireless Smart Speaker | Asthma Inhaler | Stimulus Generators | Smart Video Door Bell | Wireless Mobile Video Solution | Wireless Device | Lab Automation | Emergency Mobile | Wireless Installation | Fiber Optic Tester | Geolocation Gadgets | Hand Held Instrument Biometric Device | Portable PIC Programmer | Nike Sport Watch | Vehicle Traveling Data Recorder | Linx Impact Assessment System and Blast Gauge System | Wireless Installation AHRS | Digital Wi-Fi Microscopes | Electrocardiograph | RF Analyser | Active 3D Shutter Glasses | Oxygen Monitor | Polysomnography (PSG) | Sleep Apnea Screening | Long Term Blood Pressure Measurement | Smallest long-term EEG recorder | Technical Data Screen | Vehicle Gauging | Watch Recorder | Smart Touchless Faucet Adapter

© 2002 - 2024 LiPol Battery Co., Ltd. All Rights Reserved