GEB ER34615 3.6V 19Ah D-Size Primary Lithium Thionyl Chloride (LiSOCl2) Battery
Industrial Grade-A ER34615 3.6V 19Ah (19000mAh) D-size Primary Lithium Thionyl Chloride (Li-SOCl2) bobbin cell. Highest volumetric energy density (1280 Wh/dm³), ultra-low self-discharge (≤ 1%/year), 15–20 year operational life for smart utility meters, AMR telemetry, and pipeline sensors.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB ER34615 3.6V 19Ah D-Size Primary Lithium Thionyl Chloride (Li-SOCl2) Battery is a high-energy-density, non-rechargeable bobbin-structure primary lithium cell delivering 3.6V nominal voltage and 19.0Ah (19,000mAh) rated capacity. Specifically engineered for smart water/gas utility meters, AMR/AMI remote telemetry, pipeline cathodic protection monitoring, and oceanographic buoys, it features an ultra-low annual self-discharge rate (≤ 1.0% per year at 25°C), an extreme operating temperature window (-55°C to +85°C), and a maintenance-free service life of 15 to 20 years. Warning: Primary lithium chemistry; strictly non-rechargeable.
Product Overview & Application Scope
The GEB ER34615 3.6V 19Ah D-Size Primary Lithium Thionyl Chloride (Li-SOCl2) Battery is a high-energy-density bobbin-structure primary cell engineered for long-duration industrial instrumentation and utility infrastructures. Delivering an impressive 19.0Ah (19,000mAh) rated capacity at a stable 3.6V nominal plateau, this cell features an industry-leading volumetric energy density (over 1280 Wh/dm³), an ultra-low self-discharge rate of ≤ 1% per year at 25°C, and a service life exceeding 15 to 20 years. Housed in a hermetically sealed 304 stainless steel D-size canister (Ø 34.2mm × H 61.5mm, Approx. 107g ± 3g), the ER34615 operates reliably from -55°C to +85°C. Typical applications include large-caliber commercial water/gas flow meters, AMR/AMI remote data concentrators, pipeline cathodic protection monitors, and oceanographic buoys. Warning: Non-rechargeable primary lithium cell; strictly do not charge.
Key Product Facts
| Feature / Parameter | Specification Value | Engineering Context |
|---|---|---|
| Electrochemical System | Lithium Thionyl Chloride (Li-SOCl2) | Primary (Non-rechargeable), Bobbin energy structure |
| Nominal Voltage & OCV | 3.6V (Open Circuit Voltage: 3.66V) | Stable flat discharge curve across 90% of capacity |
| Rated Nominal Capacity | 19.0Ah (19,000mAh) | Tested at 2.0mA continuous load to 2.0V cutoff @ 25°C |
| Continuous Discharge Rating | 150mA–200mA Maximum Continuous | Recommended standard continuous background current: 2mA–5mA |
| Maximum Pulse Current | 300mA–400mA (Pulse ≤ 10s) | For high IoT pulses (>1A), pair with SPC1550 or choose ER34615M Spiral |
| Physical Dimensions & Weight | Ø 34.2 ± 0.2 mm × H 61.5 ± 0.3 mm (D Size) | Unit net weight: Approx. 107g ± 3g (Max 110g) |
| Operating Temperature Window | -55°C to +85°C (-67°F to +185°F) | Hermetically welded 304 stainless steel enclosure |
| Annual Self-Discharge | ≤ 1.0% per year @ +25°C | Enables 15 to 20-year maintenance-free field operations |
| Terminal Termination Styles | Standard Flat Top, Radial Solder Tabs, Wire Leads & Plugs | Pre-welded axial pins and customized waterproof harnesses |
| Certifications & Approvals | UN38.3, IEC 60086-4, CE, RoHS, UL1642 | Fully certified for Class 9 Dangerous Goods sea/air freight |
Complete Parametric Specifications
| Parameter | Value | Test Conditions & Tolerances |
|---|---|---|
| Nominal Operating Voltage | 3.6V | Measured under 2.0mA load at 25°C |
| Open Circuit Voltage (OCV) | 3.64V – 3.67V | Fresh cell measured at 25°C |
| Cutoff Discharge Voltage | 2.00V ± 0.05V | Safety and total capacity exhaustion threshold |
| Standard Discharge Current | 2.0mA – 4.0mA | Optimal operating discharge current for maximum 19Ah energy release |
| Max Continuous Discharge Current | 150mA (standard) / 200mA (limit) | Current to drain 50% capacity at 25°C with 2.0V cutoff |
| Max Pulse Current Capability | 300mA standard / 400mA peak | 100ms pulse discharged every 2 min, minimum voltage >2.5V |
| Storage Temperature Recommendation | +10°C to +30°C (Max +30°C) | Dry warehouse environment (<60% RH) to preserve passivation layer |
| Internal Resistance (1kHz AC) | ≤ 120 mΩ | Measured after depassivation activation |
| Electrode Morphology | Bobbin Type (Solid Lithium Anode Core) | Maximum active material mass for ultimate mAh capacity |
Equipment Compatibility & Fit Check
The ER34615 represents the premier high-capacity D-size cell for critical utility installations. Verify these engineering checkpoints prior to purchase:
- Clear Compartment Internal Envelope: Confirm battery bay accommodates Ø 34.5mm × H 62.0mm minimum clearance allowing for shrink sleeving and solder tab bends.
- Load Current Profile (Bobbin vs. Spiral Check): The ER34615 (Bobbin) is built for low-to-moderate continuous currents (≤150mA). If your device uses NB-IoT, GSM, or LoRa transmitters with recurring 1A–2A pulse bursts, evaluate our ER34615M (Spiral High-Power) model or request an ER34615 + SPC1550 hybrid battery pack.
- Polarity and Terminal Orientation: Verify terminal tab configurations (e.g. axial wire leads, 2-pin/3-pin PCB solder tabs, or standard nickel caps) to prevent installation reverse polarity.
- Reverse Current Circuit Isolation: Verify that external power inputs or backup solar circuits have blocking diodes to ensure zero back-feed charging current (≤0.5µA).
First-Party Engineering & Quality Control Evidence
Glass-to-Metal Hermetic Integrity
Heavy-duty 304 stainless steel canisters are sealed via automated precision laser welding and GTMS technology, tested to 100% helium vacuum leakage thresholds (≤ 1×10⁻⁸ mbar·L/s).
Traceable Chemical Homogeneity
High-purity battery-grade metallic lithium anode foils (≥99.9% Li) and dry-room electrolyte filling ensure consistent electrochemical capacity release across multi-year field operations.
Comprehensive Aging & Sorting
Cells undergo multi-stage resting and automated barcode sorting for open-circuit voltage (OCV) variance (≤3mV) and AC internal resistance prior to packaging.
Engineering Judgment & Boundary Conditions
✓ When ER34615 Is an Ideal Fit:
- Commercial gas and water meters, heat cost allocators requiring 15–20 year operational lifespans.
- Subsea data loggers, seismic recording devices, and pipeline cathodic protection sensors.
- Remote weather stations and wilderness telemetry units with annual maintenance constraints.
- Applications requiring highest volumetric energy density with space restricted to 1 or 2 D-cells.
✗ When ER34615 Is NOT Recommended:
- Continuous load currents exceeding 200mA (causes premature passivation and voltage depression).
- Standalone cellular transmitters demanding recurring 2A pulses without parallel capacitor support. Use ER34615M instead.
- Consumer applications or battery bays without reverse-charging protection.
- Systems where small AA size is mandatory; choose our ER14505 2700mAh Cell.
OEM / ODM Customization Options
| Customization Scope | Available Configurations | Engineering Specifications |
|---|---|---|
| Terminal Styles | Standard Flat Top, Nipple Top, Radial PCB Solder Tabs, Axial Leads | 0.15mm–0.25mm pure nickel tabs, laser-welded with zero thermal degradation |
| Harness & Connectors | Twisted wire leads with JST (XH/PH/SM), Molex, AMP, or Hirose connectors | UL-rated wiring, custom wire gauge (20AWG–26AWG), length 50mm–800mm |
| Multi-Cell Pack Assembly | 1S2P (3.6V 38Ah), 2S1P (7.2V 19Ah), 3S1P (10.8V 19Ah), custom geometries | Flame-retardant PVC shrink wrap, internal blocking diodes and PTC fuses |
| Capacitor Hybrid Packs | ER34615 + SPC1550 / UPC1550 integrated pulse battery pack | Delivers 3A–5A burst pulse currents for NB-IoT/GPRS without voltage delay |
Commercial Terms, Compliance & Dangerous Goods Freight
Shipped with full international documentation: official UN38.3 test summaries, MSDS, sea freight transport condition appraisals (IMO/IMDG Code), air dangerous goods certificates (IATA DGR), and factory Certificate of Conformity (CoC).
Frequently Asked Questions
Q: How does the ER34615 achieve a 15 to 20-year operational lifespan?
A: The extreme longevity is enabled by two core factors: first, the dense protective LiCl passivation film keeps annual self-discharge below 1% at 25°C; second, our hermetic glass-to-metal seal prevents electrolyte volatilization and moisture ingress over decades of continuous field exposure.
Q: When should I choose the ER34615 instead of the ER34615M?
A: Choose the ER34615 (Bobbin) when your primary requirement is maximum capacity (19Ah vs. 13Ah), lowest self-discharge (≤ 1% vs. ~1.5%), and your continuous current is below 150mA. Choose the ER34615M (Spiral) if your device requires high continuous current (up to 2A) or heavy transmission pulses (up to 4A) without an external pulse capacitor.
Q: Can GEB assemble multi-cell battery packs with protective diodes?
A: Yes. We frequently design and assemble multi-cell configurations (such as 2S1P 7.2V or 1S2P 3.6V 38Ah) incorporating series blocking diodes, PTC overcurrent devices, and custom IP67/IP68 potted enclosures for submersible water meter and pipeline environments.
Request Engineering Verification & Project Quotation
Explore all cell sizes in our Lithium Thionyl Chloride Battery (LiSOCl2) category, or contact our engineering team to request sample datasheets and custom pack designs.
Equipment Compatibility & Engineering Fit Check
Before deploying GEB ER34615 3.6V 19Ah D-Size Primary Lithium Thionyl Chloride (LiSOCl2) Battery, verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Utility meters, IoT telemetry nodes, and remote tracking devices requiring 3.6V long-life primary power.
- Sub-zero or high-temperature deployments (-55°C to +85°C) where rechargeable chemistries fail.
- Autonomous sensors demanding microamp standby combined with scheduled RF pulse bursts.
⚠ Operational Constraints & Limits:
- Do not recharge: Connecting a primary Li-SOCl2 cell to external chargers risks severe internal pressure venting or rupture.
- Avoid dead-shorting terminals during installation; account for voltage delay (passivation) after prolonged storage.
- Ensure connector polarity and pin assignment match system schematics prior to initial power-up.
First-Party Manufacturing SOP & Export Compliance
Technical Whitepapers & Engineering Guides
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Class 9 export compliance, UN38.3 test summaries, MSDS/SDS validation, and maritime/air cargo dangerous goods SOP.
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