3.7v 1000mah 503450 Tracker Lithium Battery for Fitness Trackers, GPS tracker, Remote GSM alarm trackers
| Model | VTC-LP503450 |
| Nominal Voltage | 3.7V |
| Capacity | 1000mAh |
| Max Size | 5.2X34.5X52.5mm |
| Operating Temperature | -20℃ to 60℃ |
| Standard Charge Rate | 0.5C |
| Standard Discharge Rate | 0.5C |
| Configuration | 1S1P |
| Weight | 24g |
3.7V 1000mAh 503450 Lithium battery for fitness trackers, GPS trackers and remote GSM alarms
503450 3.7V 1000mAh battery is a lithium polymer cell with a nominal voltage of 3.7V and a capacity of 1000mAh. This pouch-type lithium battery delivers stable, durable power for devices such as health monitoring equipment, GPS tracking devices, and remote GSM alarm systems, ensuring continuous monitoring and wireless communication.
Constructed from premium materials including lithium compounds and flexible aluminium foil, the 503450 battery features lightweight design, compact dimensions, high energy density, low self-discharge rate, and extended cycle life. Its flexible pouch structure facilitates seamless integration into wearable and mobile tracking devices.
To ensure battery safety, VTCBATT’s internal components incorporate customisable protection circuit boards (PCBs) that guard against overcharging, over-discharging, overcurrent, overheating, and short circuits. With a response time of 1-3 milliseconds, this enhances long-term safety under operational conditions. VTCBATT’s entire lithium polymer battery production process is conducted on highly automated production lines within medical-grade cleanroom facilities maintaining strictly controlled humidity levels. Integrated with an advanced MES system, each battery is fully traceable, ensuring consistent quality and performance throughout the manufacturing process.
We offer customisation services including wiring, connectors, discharge current, and thermal performance to precisely match the battery to your product design, supporting diverse device architectures and operating environments. This 3.7V battery powers health monitoring devices, GPS tracking units, and remote GSM alarm systems, ensuring accurate data transmission, extended standby time, and reliable performance under your device’s operating conditions.
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Full Certification & Extended Warranty
VTCBATT LiPo batteries meet global certifications including CB, CE, UL, and UN38.3, and offer a 14-month warranty—two months longer than standard—to maximize customer confidence and profit.
CertificationVTCBATT lithium polymer batteries have passed numerous important international certifications, including UL1642, IEC62133, UN38.3, CE, ROHS, BIS and EU2024/1542, CE, ROHS, REACH, and KC certifications.
WarrantyVTCBATT LiPo batteries come with a 14-month warranty, 2 months longer than the standard 12-month warranty, providing extra coverage for shipping and customs clearance. This ensures customer confidence.
CustomizationDifferent sizes,capacities, connectors, discharge rates,and cases. Just inform us of your specific requirement, and our professional engineers can provide you with the customized lipo battery proposal.

Flexible order quantity to support prototype testing and mass production.

Our technical and sales teams reply to your inquiry within 6 hours.

Test our lithium battery quality and performance before placing bulk orders.
Batteries certified to UL, CE, UN38.3, MSDS, ROHS, IEC62133, and more global standards.
High energy density
Featuring high-energy density 200wh/kg-300wh/kg,the lipo battery can deliver more power than other battery chemistries and support high drain current to power the devices strongly.


PCB with NTC
VTCBATT lipo batteries are provided with NTC(Negative Temperature Coefficient), a kind of temperature sense to decrease the resistance as the temperature increases, allowing accurate temperature monitoring of the batteries. The NTC plays a critical role in improving the battery reliability and safety.
High Safety
In the safety lab,VTCBATT will stimulate all the test items of UL and IEC62133,including nail penetration test,free fall experiment,heavy object impact,extrusion experiments.

LiPo Battery Advantage

Based on 0.5C/1C cycling, the VTCBATT lipo battery can maintain over 80% capacity after 500 cycles and totally reach 1000 times cycle life.

VTCBATT Lipo battery can be discharged from -20℃ to 60℃.
This wide temperature range performance enables the battery to operate in many conditions.

VTCBATT lipo battery can be discharged in different rates of 0.2C,0.5C,1C,2C,3C to meet different power consumption.

After 30-day and 60-day storage, there is slight 1%-2% slight voltage decrease under 50% SOC at 25°C.
Why Choose VTCBATT?
VTCBATT not only focuses on bespoke design and premium service to meet diverse client requirements, but also commits to precision and standardised manufacturing in every process to ensure the highest battery quality. Furthermore, VTCBATT provides comprehensive support from pre-sales to after-sales, prioritising customer feedback to establish long-term, mutually beneficial partnerships. Our team of professional sales and technical engineers will serve as your premier bespoke battery specialists, delivering reliable and prompt service at all times.
From raw material mixing to cell testing, VTCBATT employs an automated production process that maximises production efficiency and enhances cell quality, safety and reliability. The entire production process is monitored and 100% tested before moving on to the next process to ensure zero defects before leaving the factory.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
Application
The VTCBATT 3.7v 1000mah 503450 Tracker polymer lithium-ion battery is widely used in portable electronics and smart devices that require high energy density and stable power output. With a slim pouch design, it is ideal for Fitness Trackers, GPS tracker, Remote GSM alarm trackers. This battery supports customized dimensions, voltage, and protection circuits to match specific application needs. Featuring low internal resistance, long cycle life, and reliable safety performance, the VTCBATT 1000mAh Li-polymer battery ensures efficient operation, extended runtime, and dependable performance for both consumer and industrial applications.
Reliable power for remote security sensors ensuring constant GSM connectivity and long-lasting standby monitoring performance.
Compact lightweight battery provides essential safety tracking for pets with efficient energy density and durability.
Ultra-slim high-capacity power solution supporting continuous biometric monitoring and daily activity tracking for healthy lifestyles.
High-performance power source delivers precise real-time positioning data for vehicles and valuable assets during transport.
Detailed Battery Test Report
Model: VTC-LP503450 | 1000mAh | 3.7V
1. Basic Technical Parameters
| Item | Specifications | Item | Specifications |
|---|---|---|---|
| Rated Capacity | 1000mAh (0.2C) | Nominal Voltage | 3.7V |
| Limited Charge Voltage | 4.2V | Cut-off Voltage | 3.0V |
| Max Charge Current | 1000mA (1.0C) | Peak Discharge Current | 1500mA (1.5C) |
| Dimensions (T×W×H) | 5.0 x 34.0 x 50.0 mm | Weight | ≈ 20g |
2. UN38.3 Detailed Test Data (T1-T4)
Includes: Altitude Simulation, Thermal Test, Vibration, and Shock.
| Sample No. | Mass (g) | Open Circuit Voltage (V) | ||||
|---|---|---|---|---|---|---|
| Before (M1) | After (M2) | Loss (%) | Before (V1) | After (V2) | Retention (%) | |
| 01 (1st Cycle) | 23.0 | 23.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 02 (1st Cycle) | 24.0 | 24.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 03 (1st Cycle) | 23.0 | 23.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 04 (1st Cycle) | 23.0 | 23.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 05 (50th Cycle) | 23.0 | 23.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 06 (50th Cycle) | 23.0 | 23.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 07 (50th Cycle) | 24.0 | 24.0 | 0.00% | 3.85 | 3.84 | 99.74% |
| 08 (50th Cycle) | 24.0 | 24.0 | 0.00% | 3.85 | 3.84 | 99.74% |
3. T5 External Short Circuit
| Sample ID | Max Temp (°C) | Verdict |
|---|---|---|
| 01 / 02 | 56.7 / 56.3 | PASS |
| 03 / 04 | 55.9 / 56.7 | PASS |
| 05 / 06 | 56.5 / 56.9 | PASS |
| 07 / 08 | 56.1 / 56.9 | PASS |
4. T6 Impact Test Temp
| Sample ID | Max Temp (°C) | Sample ID | Max Temp (°C) |
|---|---|---|---|
| 01 | 25.8 | 06 | 25.5 |
| 02 | 25.7 | 07 | 26.8 |
| 03 | 25.5 | 08 | 25.2 |
| 04 | 25.9 | 09 | 25.7 |
5. Safety Protection Parameters (PCB/PCM)
- Over-charge Protection: 4.280V ± 0.02V
- Over-discharge Protection: 3.000V ± 0.05V
- Over-current Detection: 2.5A ~ 5.0A
- Short Circuit Protection: Available (Delay: 280μs)
- Static Current: Typ. 5μA (Max 8μA)
- Internal Resistance: Typ. 45mΩ (Max 60mΩ)
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