3.8 V 5000mAh Lithium ion Battery 6759104

Part 1. Why choose 3.8V? What are the advantages?

A 3.8V High-Voltage Lithium Polymer Cell (HV-LiPo) offers engineering-significant advantages over conventional 3.7V LiPo cells. The higher-voltage platform improves energy density, performance, and system efficiency.

• Higher Gravimetric & Volumetric Energy Density: More Wh per gram and per cubic centimeter, enabling longer runtime without increasing battery size.

• Higher Usable Voltage Plateau: Flatter and higher discharge curve with reduced voltage sag.

• Improved Device Efficiency: Many PMICs, DC-DC converters, and RF subsystems perform more efficiently at higher voltages.

• Enhanced Power Delivery: Higher nominal voltage = more power headroom for high-drain designs.

• Modern HV Chemistry: Forward-compatible with next-generation consumer and industrial electronics.

Part 2. Can 3.7V and 3.8V batteries be interchanged?

Generally no — the two chemistries require different charging voltages and BMS configurations.

• A 3.8V HV LiPo charges to 4.35V
• A standard 3.7V LiPo charges to 4.2V

Using the wrong battery type leads to:

• Undercharging (if a 3.8V cell is charged at 4.2V → reduced capacity, poor performance)
• Overcharging risk (if a 3.7V cell is charged at 4.35V → serious safety hazard)
• Compatibility issues with voltage thresholds
• Incorrect SoC estimation by the device’s fuel gauge

Only replace within the same voltage platform unless the device’s charging IC and BMS are specifically designed to support both.

Part 3. Is a 3.8V high-voltage LiPo battery safe?

Yes—3.8V HV LiPo batteries are safe when used with proper charging and protection electronics. The chemistry incorporates:

• Stabilized high-voltage cathode materials (Lithium Cobalt / NCM blended structures)
• Electrolyte additives that reduce electrolyte oxidation at higher voltages
• Enhanced separator materials for thermal and electrical stability
• Strict cell-level UN38.3, UL1642, and reliability testing

Electrical Characteristics:

• Charge voltage: 4.35V ± 0.05V
• Typical discharge cutoff: 2.75–3.0V
• Nominal operating range: 3.0V–4.35V
• Recommended charge rate: 0.2C–0.5C
• Recommended discharge rate: 0.2C–0.5C

The chemistry is engineered to deliver higher usable energy while complying with international safety standards.

Part 4. How long can a 5000mAh LiPo battery last?

Energy = 3.8V × 5Ah = 19Wh

Estimated runtimes for typical device loads:

• 0.5W → ~36–38 hours
• 1W → ~18–19 hours
• 2W → ~9–10 hours
• 3W+ → depends on duty cycle and efficiency

Part 5. Is the 3.8V cell compatible with my device?

Compatibility depends on electrical and mechanical requirements.

• Charging Voltage: Device must support 4.35V charging.
• Operating Voltage: System must accept 3.0V–4.35V range.
• Mechanical Fit: Cell size is 6.7 × 59 × 104mm (allow 0.5–1mm tolerance).

If unsure, Ufine can perform charging-IC and BMS compatibility analysis.

Part 6. Do I need a PCB for this LiPo cell?

A bare LiPo cell does not include safety protections.

Depending on your architecture, you may need:

A standard PCM/PCB for:

• Overcharge protection
• Over-discharge protection
• Overcurrent and short-circuit protection
• Cell balancing (if in multi-cell packs)

Direct cell use is acceptable ONLY when:

• A full BMS is already integrated into your device
• You have control over charge voltage, cutoff, and current
• You comply with regulatory safety requirements

Ufine provides:

✔ Bare cell

✔ Cell + PCM

✔ Custom wiring, connectors, NTC, multi-cell packs

Part 7. Common applications

This 3.8V 5000mAh HV LiPo cell is ideal for:

• Smart home control panels
• Handheld testers and meters
• IoT terminals and industrial wireless devices
• POS / barcode scanners
• Portable medical diagnostic devices
• Compact multimedia electronics
• Wearables and modular electronics

Part 8. Buyer’s checklist

Before sourcing this 3.8V cell, confirm:

• Charging IC supports 4.35V
• Required capacity ≥ 5000mAh
• Size fits your enclosure (6.7×59×104mm)
• Discharge current matches 0.2C–0.5C
• Certifications: UL, UN38.3, MSDS
• Need PCM, connector, or NTC
• Operating temperature is within limits
• MOQ and long-term supply available

Part 9. Common mistakes to avoid

❌ Charging a 3.8V battery with a 4.2V charger

❌ Assuming 3.7V and 3.8V are interchangeable

❌ No PCM in systems requiring safety protection

❌ Charging outside recommended temperature range

❌ Enclosure too tight (no expansion space)

❌ Missing transport certifications (UN38.3)