Address:
6F No.18 Yucai Rd, Dalingshan Town, Dongguan, Guangdong, China
Business Hours: MonβFri 9AMβ6PM (GMT+8)
Address:
6F No.18 Yucai Rd, Dalingshan Town, Dongguan, Guangdong, China
Business Hours: MonβFri 9AMβ6PM (GMT+8)














$1.56
Model 302530 3.7V 180mAhlithium polymer battery. High energy density with built-in BMS protection. Ideal for portable electronics, wearables and IoT devices. Custom sizes available. HNF Battery manufacturer.
The 302530 3.7V 180mAh Lithium Polymer Battery is purpose-engineered as the dedicated power solution for children’s smart watches and compact kids wearable devices. Combining an ultra-slim 3mm profile, precision 180mAh capacity, advanced PCM child-safety protection, and full EN71 toy safety certification β this micro LiPo cell delivers the exact power, safety, and form factor that children’s wearable brands demand.
π 180mAh Precision Capacity β All-Day Kids Watch Performance Precisely sized at 180mAh to match the power requirements of children’s smart watches β supporting GPS tracking, voice calling, step counting, message notifications, and SOS functions running simultaneously throughout a full school day. Enough capacity to keep parents connected and children protected from morning to bedtime.
π Ultra-Slim 3mm Profile β 302530 (3.0 Γ 25 Γ 30mm) At just 3mm thin and weighing approximately 3.5g, this micro soft-pack cell is one of the slimmest LiPo batteries available for wearable applications. Fits seamlessly into the narrow watch body of children’s smart watches without adding bulk or weight β ensuring all-day wearing comfort for small wrists while giving designers maximum freedom to create slim, attractive watch profiles.
| Design Advantage | Detail |
|---|---|
| Thickness | Only 3.0mm β ultra-slim wearable profile |
| Weight | ~3.5g β virtually weightless on a child’s wrist |
| Footprint | 25 Γ 30mm β fits standard kids watch battery bays |
| Form Factor | Soft-pack β flexible, safe, no rigid metal casing |
π‘οΈ PCM 4-in-1 Protection β Child Safety First High-performance Protection Circuit Module (PCM) provides comprehensive four-layer defense against overcharge, over-discharge, overcurrent, and short circuit β specifically optimized for children’s product usage patterns. Protects against mismatched chargers, accidental short circuits, and rough handling that are common in kids’ use environments. Prevents overheating, swelling, and any fire risk β giving parents complete peace of mind.
πΆ Child-Safe Materials & Construction Manufactured using non-toxic, environmentally safe materials that fully comply with children’s product material safety requirements. RoHS compliant with harmful substance content strictly controlled well within safe limits β from cell chemistry to outer packaging, every aspect of this battery is designed with child safety as the top priority.
β‘ Stable Low-Voltage Output β Reliable Watch Functions Advanced polymer electrolyte system delivers a flat, stable 3.7V discharge platform with minimal voltage deviation β ensuring GPS modules, communication chips, and display screens in children’s smart watches receive consistent, clean power throughout the full charge cycle, preventing signal drops, screen flickering, or unexpected shutdowns during critical moments.
β»οΈ 500+ Cycle Life β Durable for Active Kids Rated for over 500 full charge/discharge cycles with low self-discharge rate. Retains good capacity after extended storage β extending the service life of children’s smart watches, reducing replacement costs for parents, and building long-term brand loyalty for kids wearable manufacturers.
π Grade A Cells β Precision Consistency for Micro Batteries Every micro cell undergoes rigorous electrochemical performance testing with capacity variance tightly controlled within Β±10mAh β a stricter standard applied specifically to small-capacity cells where consistency is most critical. Uniform internal resistance across batches ensures stable, predictable performance in every children’s watch that ships.
π Full Children’s Product Certification β CE / EN71 / RoHS CE / UN38.3 / RoHS / MSDS / IEC62133 / EN71 certified β fully compliant with EU Toy Safety Directive requirements and children’s product market entry standards across North America, Europe, and Asia. Complete certification documentation available for product compliance applications and customs clearance worldwide.
π¦ In Stock β Fast Fulfillment for Kids Watch Brands Strong warehouse inventory available for immediate dispatch. Flexible order quantities from R&D samples to mass production runs β with competitive lead times tailored to the fast-moving children’s consumer electronics market.
| Spec | Detail |
|---|---|
| Model | 302530 |
| Nominal Voltage | 3.7V |
| Capacity | 180mAh |
| Charge Voltage | 4.2V |
| Discharge Cutoff | 3.0V |
| Max Continuous Discharge | 180mA (1C) |
| Peak Discharge Current | 360mA (2C) |
| Internal Resistance | β€ 250mΞ© |
| Capacity Consistency | Β±10mAh |
| Dimensions | 3.0 Γ 25 Γ 30 mm |
| Weight | ~3.5g |
| Cycle Life | β₯ 500 cycles |
| Protection | Overcharge / Over-discharge / Overcurrent / Short Circuit (PCM) |
| Operating Temp | -20β ~ 60β |
| Storage Temp | -20β ~ 45β |
| Certifications | CE / UN38.3 / RoHS / MSDS / IEC62133 / EN71 |
| Category | Devices |
|---|---|
| β Kids Wearables | Children’s Smart Watches, GPS Kids Watches, Kids Phone Watches |
| π Safety & Tracking | Child GPS Trackers, School Attendance Devices, Safety Wearables |
| π Education | Kids Learning Devices, Smart Wristbands, Educational Toys |
| π€ Smart Toys | AI Companion Robots, Interactive Learning Toys, Mini Smart Pets |
| π§ Audio | Kids Bluetooth Earphones, Wireless Hearing Aids for Children |
| π₯ Medical | Pediatric Health Monitors, Child Vital Sign Trackers |
| π‘ Micro IoT | Miniature IoT Terminals, Micro Sensor Nodes |
| Requirement | 302530 Solution |
|---|---|
| Ultra-slim watch body design | β Only 3mm thick |
| Lightweight for small wrists | β ~3.5g virtually weightless |
| All-day school use | β 180mAh optimized capacity |
| Child safety compliance | β CE + EN71 + RoHS certified |
| GPS + call + SOS functions | β Stable 3.7V output platform |
| High-volume OEM supply | β Grade A, Β±10mAh consistency |
| Feature | Benefit |
|---|---|
| β Kids Watch Dedicated | Purpose-built for children’s smart watch specs |
| β Ultra-Slim 3mm Profile | Perfect fit for slim watch body designs |
| β CE + EN71 Certified | Children’s product market compliant globally |
| β Child-Safe Materials | Non-toxic, RoHS compliant construction |
| β PCM Child-Safety Protection | Safe against misuse, rough handling & short circuits |
| β Β±10mAh Tight Consistency | Stricter QC for micro-capacity cells |
| β Grade A Cells Only | Premium quality, reliable batch performance |
| β Factory Direct | Competitive pricing, zero middleman markup |
| β In Stock | Immediate fulfillment, short lead times |
| β Low MOQ | Flexible for watch startups & large brands |
| β Full OEM / ODM | Custom capacity, size, wire & connector |
| β Global Shipping | Full compliance docs for air & sea freight |
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