Description

Summary

Engineered for Precision. Trusted in Healthcare.

The 7.4V 3500mAh Lithium Battery Pack is specifically designed to meet the demanding power requirements of medical diagnostic equipment, including the ECG-300G Contec electrocardiograph. Built with high-performance LiPo (Lithium Polymer) cells, it ensures stable voltage output, long runtime, and consistent ECG signal accuracy over extended use.

This battery is an ideal replacement or OEM power source for portable medical devices requiring dependable energy, especially in clinical, emergency, or mobile healthcare environments.

7.4V 3500mAh Lithium Battery Technical Information

Model: Medical Battery

Battery Type: Lithium Polymer Battery

Nominal Capacity: 3500mAh

Nominal Voltage: 7.4V

Nominal Energy: 25.9Wh

Charge Cut-off Voltage: 8.4V

Discharge Cut-off Voltage: Typically 6.0V, Minimum 5.5V

Standard Charge Current: 0.2C (700mA)

Max Charge Current: 1C (3500mA)

Standard Discharge Current: 0.2C (700mA)

Max Continuous Discharge Current: 1C (3500mA)

Max Peak Discharge Current: 2C (7000mA)

Cycle Life: More Than 500 Times

Dimensions: 17.5 × 59 × 83 mm

Weight: 150g

Charge Temperature Range: 0°C to 45°C

Discharge Temperature Range: -20°C to 65°C

Storage Temperature Range:

• -20℃~25℃: More than 12 months
• -20℃~45℃: Less than 3 months
• -20℃~60 ℃: Less than 1 month

BMS: Yes

Connector: Bare wires, XH2.54, etc

✅ Key Features & Benefits

🩺 Designed for ECG-300G Contec

This battery delivers the optimal voltage and current output required by the ECG-300G electrocardiograph, supporting accurate signal acquisition and continuous real-time monitoring without power interruptions.

🔋 High Capacity for Extended Use

With 3500mAh of capacity, this pack supports long operating hours, minimizing the need for frequent recharging — ideal for clinical shifts or field diagnostics.

⚡ Stable Performance with Safe LiPo Chemistry

Built with lithium polymer technology, this battery eliminates explosion risks, offering a secure and dependable power source for sensitive healthcare environments.

🔁 Long Cycle Life – 500+ Recharges

Built with premium-grade cells, this pack supports over 500 full charge/discharge cycles under normal conditions, lowering long-term maintenance costs.

🧩 Compact & Custom-Fit Design

We understand the spatial limitations of medical devices. This battery is compact and can be tailored in size and connector for a perfect fit inside ECG monitors, portable diagnostics kits, or wireless medical equipment.

🎨 OEM/ODM Support – Built to Spec

Need a specific size, voltage, label, or connector? We offer:

• ✅ Custom housing, discharge rate, and terminal type

• ✅ Custom branding and labeling for OEM clients

• ✅ Low minimum order quantity

• ✅ Engineering support for battery integration

🧩 Recommended Medical Applications

• ECG-300G Contec electrocardiograph

• Portable ECG/EEG/EMG diagnostic devices

• Wireless patient monitoring systems

• Battery-powered infusion pumps

• Portable ventilators or oximeters

• Emergency kits & field diagnostics

❓ FAQ – 7.4V 3500mAh Medical Battery

1. Is this battery safe for medical environments?

Absolutely. It’s built with stable LiPo chemistry, integrated protection circuitry, and complies with medical-grade battery safety standards.

2. Can I order custom labels or sizes for my own product line?

Yes! We offer OEM label printing, custom enclosures, connector types, and even BMS integration

3. What is the storage recommendation?

Make sure in cool, dry place at 40%+ state of charge(SOC). Shelf life is more than 12 months, and capacity retention remains high even after extended storage.

Contact US for more informations