ATEX Intrinsically Safe Battery 3.6V 6700mAh
A Power System Component for Sensors in Hazardous (Classified) Areas
Product Overview
The IST4-213868SY is a 3.6V 6.7Ah intrinsically safe lithium battery pack engineered as a power system component for sensors and instrumentation operating in hazardous (classified) areas. Rather than a repurposed consumer battery, this solution is purpose-designed for applications where energy limitation, fault tolerance, and long-term stability are critical to explosion risk control. It is widely suitable for industrial environments requiring intrinsically safe power solutions, such as oil & gas, chemical processing, and process automation.
Key Advantages for Hazardous Area Applications
Engineered for Intrinsically Safe Systems
- Designed around intrinsic safety (IS) energy-limiting principles
- Supports T4 temperature class design targets
- Controlled voltage, current, and thermal behavior to minimize ignition risk
Reliable Power for Sensors & Instrumentation
- Stable 3.6V output optimized for low-power industrial sensors
- Ideal for long-term operation of transmitters, detectors, and monitoring devices
- Consistent performance in continuous duty cycles
Low Self-Discharge & Extended Service Life
- Reduced standby energy loss
- Longer maintenance intervals in hard-to-access installations
- Supports energy-efficient and low-carbon operational strategies
Multi-Layer Safety Protection
- Short-circuit protection
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Over-temperature protection
These safeguards are essential for battery operation in hazardous areas, where fault energy must remain strictly controlled.
Safety Design & Compliance Framework
This battery is engineered in accordance with international intrinsically safe design concepts used in ATEX and IECEx systems.
Energy Limitation by Design
Key electrical parameters are intentionally constrained to support intrinsic safety objectives:
- Nominal voltage (3.6V) selected to limit available electrical energy
- Continuous discharge current ≤ 1.6A to restrict fault energy
- Peak discharge current < 3A to prevent transient ignition scenarios
Thermal Risk Management
- Controlled current paths and internal resistance
- T4-aligned temperature behavior under normal and abnormal conditions
- Protection circuitry designed to prevent thermal runaway escalation
Component Role in Certified Equipment
This battery is
designed and tested as a component for incorporation into end equipment seeking
ATEX / IECEx certification for use in:
- Gas atmospheres (Zone 0 / 1 / 2)
- Dust atmospheres (Zone 21 / 22)
Final certification and zone approval reside with the
complete apparatus, as defined by applicable standards.
Why Choose an Engineered Intrinsically Safe Battery Pack?
| Aspect |
Standard Lithium Battery |
Engineered IS Battery Pack |
| Energy Control |
Unrestricted |
Intentionally limited |
| Fault Behavior |
Unpredictable |
Defined & managed |
| Certification Support |
None |
Designed for certified systems |
| Thermal Risk |
Higher |
Controlled |
| Long-Term Reliability |
Variable |
Application-specific |
In hazardous areas, how energy behaves during faults matters more than nominal capacity. This product is designed accordingly.
Technical Specifications
| Product Code |
IST4-213868SY |
| Battery Type |
Intrinsically Safe / Explosion Proof |
| Cell Configuration |
18650-1S2P |
| Cell Type |
SANYO 18650 Li-ion (NCM chemistry) |
| Nominal Voltage |
3.6V |
| Nominal Capacity |
6.7Ah (6700mAh) |
| Charging Voltage |
4.2V |
| Charging Current |
≤ 2A |
| Continuous Discharge Current |
≤ 1.6A |
| Peak Discharge Current |
< 3A |
| Cut-off Voltage |
3.0V |
| Internal Resistance (Pack) |
≤ 250mΩ |
| Dimensions (Max) |
21.5 * 38 * 68 mm |
| Weight |
Approx. 100g |
| Housing |
PVC |
| Charge Temperature |
0 ~ 45°C |
| Discharge Temperature |
−20 ~ 60°C |
| Storage Temperature |
−20 ~ 45°C |
Typical Hazardous Area Applications
- Industrial Sensors
Powering pressure transmitters, level sensors, and flow instruments in petrochemical and chemical plants where intrinsically safe power is mandatory.
- Gas Detection Systems
Reliable power for fixed gas detectors monitoring explosive atmospheres, supporting continuous safety instrumented system (SIS) operation.
- Process Instrumentation
Backup or primary power for field instruments deployed in classified zones.
- Monitoring & Control Devices
Long-life power source for distributed sensing nodes in hazardous locations.
Customization & Integration Support
Our engineering team provides
application-specific support, including:
- Capacity and form-factor customization
- Connector and harness options
- Discharge profile optimization for sensor loads
- Pre-certification technical review of power system design to support end-equipment approval processes
Frequently Asked Questions
Is this battery ATEX certified?
This battery is designed as a component for ATEX/IECEx certified equipment. Final certification applies to the complete device.
Can it be used in Zone 0 or Zone 1 areas?
It is designed for integration into equipment targeting these zones. Approval depends on the final system design.
What is the difference between explosion-proof and intrinsically safe batteries?
Explosion-proof relies on containment; intrinsically safe limits energy to prevent ignition. This product follows the intrinsically safe design philosophy.
Can you support integration into our sensor housing?
Yes. We provide technical support during the design and pre-certification phase.
