Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Compact 3.7V 250mAh lithium polymer battery designed for voice recorders and other portable electronic devices, featuring high energy density and reliable performance.
Product Specifications
Item
Specifications
Batteries
3.7V 250mAh LiPo battery
Charge voltage
4.2V
Nominal voltage
3.7V
Nominal capacity
250mAh @ 0.2C Discharge
Charge current
Standard Charging: 0.5C Rapid charge: 1.0C
Standard Charging method
0.5C CC charge to 4.2V, then CV charge till current ≤0.05C
Charging time
Standard: 2.75 hours (Ref.) Rapid: 2 hours (Ref.)
Max. charge current
1.0C
Max. discharge current
1.0C
Discharge cut-off voltage
2.75V (0.2C)
Operating temperature
Charging: 0°C ~45°C Discharging: 0°C ~45°C
Storage temperature
-10°C ~ +45°C
Dimension
Length: 35±2mm Width: 20±0.5mm Thickness: 4±0.2mm
Drop Test
1m drop onto concrete twice. No fire, no leakage
Cycle time
≥500 cycles
Key Features
Ultra-Compact & Lightweight Design: Slim soft-pack structure with only 4mm thickness and approximately 5g weight, ideal for miniaturized portable devices.
High Safety & Stable Performance: Aluminum-plastic film soft package eliminates leakage risk with built-in PCM protection for over-charge, over-discharge, over-current and short-circuit protection.
High Energy Density & Reliable Output: 3.7V rated voltage and 250mAh capacity provide stable, long-lasting power with higher energy density than same-size cylindrical batteries.
Low Self-Discharge & Long Cycle Life: Less than 3% self-discharge rate per month with over 500 cycles and capacity retention above 80%.
No Memory Effect & Flexible Charging: Supports charging at any power level without memory effect, compatible with standard 4.2V charging.
Wide Temperature Adaptability: Operating temperature range of charging 0~45℃ and discharging -20~60℃ for stable performance in various environments.
Customizable & OEM/ODM Supported: Accepts customization on terminals, protection boards, and labeling with stable quality and fast delivery.
Main Applications
Smart Wearable Devices: Smart bracelets, GPS watches, motion trackers with 1-2 days of low-power use
Miniature Digital Devices: Bluetooth headsets, voice recorders, MP3 players, cameras with 3-6 hours of use
IoT Terminals: Wireless sensors, RFID tags, data collectors with long standby times
Medical Devices: Blood glucose meters, pulse oximeters, massagers with stable discharge
Toys and Models: Remote control cars, drones, robots with compact size and low-rate discharge
Backup Power: Auxiliary power for smart door locks, emergency power for small devices
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2012
Total Annual:
500000-1000000
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ... Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ...
