GEB 40350 3.85V 435mAh High-Voltage (LiHV) Lithium Polymer Battery Cell (4.0×33×35mm)
High-voltage Grade-A GEB 40350 3.85V 435mAh (1.67Wh) LiHV pouch lithium polymer cell (4.0×33×35mm, 8.5g) featuring 4.35V/4.40V cutoff, high volumetric energy density, and low IR for smart glasses, POS terminals, and wearable medical devices.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 40350 3.85V 435mAh High-Voltage (LiHV) Lithium Polymer Battery Cell (4.0×33×35mm) is an advanced high-energy-density pouch cell formulated with a high-voltage Lithium Polymer (LiHV) cathode chemistry. Offering a 3.85V nominal working voltage and a full-charge cutoff of 4.35V/4.40V, it provides 435mAh rated capacity (1.67Wh energy)—yielding approximately 12% higher volumetric energy density compared to traditional 3.7V/4.20V LiPo cells of identical dimensions. Measuring 4.0mm in thickness, 33mm in width, and 35mm in length with an ultra-lightweight mass of approximately 8.5g, this cell is engineered for smart AR glasses, handheld POS terminals, biometric scanners, and compact medical pens. It delivers standard 1.0C continuous discharge (435mA) and 2.0C pulse loads with integrated low impedance (≤ 60 mΩ).
Product Overview
The GEB 40350 3.85V 435mAh High-Voltage (LiHV) Lithium Polymer Battery Cell enables hardware designers to extend device operating duration without expanding battery bay volume. Engineered with specialized high-voltage electrolyte and cobalt-stabilized cathode chemistry, the cell maintains structural stability even under repeated charging up to 4.35V–4.40V. With physical dimensions of 4.0 ± 0.3 mm × 33.0 ± 0.5 mm × 35.0 ± 0.5 mm and an ultra-light net weight of Approx. 8.5g ± 0.5g, it provides high gravimetric energy density. Available with bare nickel tabs or factory-mounted ultra-thin protection circuit modules (PCM) with custom lead wires.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | High-Voltage Lithium Polymer (LiHV 3.85V / 4.35V) |
| Nominal Voltage & Capacity | 3.85V / 435mAh (1.67Wh) |
| Physical Dimensions & Weight | 4.0 ± 0.3 mm × 33.0 ± 0.5 mm × 35.0 ± 0.5 mm / Approx. 8.5g ± 0.5g |
| Continuous Discharge Rating | 1.0C continuous (435mA continuous discharge) |
| Peak Pulse Discharge | 2.0C pulse (870mA pulse ≤ 5 seconds) |
| Target Applications | Smart AR glasses, handheld POS terminals, mobile barcode scanners, medical diagnostic pens |
| Standard Terminals | Pure nickel tabs / optional micro PCM with AWG 28 silicone leads and Molex/JST plug |
| Baseline Cycle Life | ≥ 500 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Operating Voltage | 3.85V | Standard 0.2C discharge test @ 25°C |
| Upper Charge Cutoff Voltage | 4.35V / 4.40V ± 0.02V | High-voltage CC/CV charging profile, 0.02C cutoff current |
| Discharge Lower Cutoff | 3.00V ± 0.03V | PCM / Controller automatic undervoltage protection cutoff |
| Standard Charge Current | 0.2C–0.5C (87mA to 218mA) | Maximum fast charge rate: 1.0C (435mA) |
| Internal AC Resistance (1kHz) | ≤ 60 mΩ | 1kHz AC impedance @ 25°C fully charged |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 1.5mΩ | Precision automated factory sorting |
| Operating Temperature Range | Charge: 0°C to 45°C | Discharge: -10°C to 55°C | Storage: 15°C to 25°C (3.85V–3.90V storage state) |
Integration & Operational Boundary Conditions
Charger IC Configuration: Ensure system charging management ICs (e.g., TI BQ25xxx or Analog Devices LTC series) are programmed for 4.35V or 4.40V LiHV regulation. Standard 4.20V chargers will only partially charge the cell to approx. 82% capacity.
Swelling & Housing Cavity: Design enclosure clearances with an additional 0.35mm thickness buffer (up to 4.35mm) to account for natural pouch breathing and cycle expansion.
OEM Customization: Available with ultra-low quiescent current PCM circuits (< 3.0 μA) preventing deep self-discharge during long warehouse storage. Full UN38.3 test summaries, CE, and RoHS certificates supplied.
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 40350 3.85V 435mAh High-Voltage (LiHV) Lithium Polymer Battery Cell (4.0×33×35mm), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.85V / 435mAh power curves.
- Commercial designs requiring high volumetric energy density and predictable discharge curves.
- Projects requiring batch consistency with automated barcode impedance sorting.
⚠ Operational Constraints & Limits:
- Do not discharge below minimum cutoff voltage or charge beyond 4.41V.
- Maintain operational surface temperature within -20°C to +60°C discharge (0°C to +45°C charge).
- Ensure connector polarity and pin assignment match system schematics prior to initial power-up.
First-Party Manufacturing SOP & Export Compliance
Technical Whitepapers & Engineering Guides
What is a LiPo Battery [2026 Complete Engineering Guide]
In-depth overview of polymer chemistry, pouch packaging safety, high energy density, and custom geometric form factors.
Understanding S, P, and C in LiPo Battery Specs Explained
Clear technical guide to cell series/parallel architectures, voltage multiplication, and continuous vs burst discharge ratings.
Basics of Battery Discharging: C-Rate, Cutoff Voltage and Safety Limits
Critical operating boundaries, recommended depth of discharge (DoD), and thermal limits to prevent swelling and cycle degradation.
