Class 1 Div 2 Batteries: C1D2 Lithium Power for Hazardous Locations

If you are evaluating a C1D2 battery, hazardous location UPS, Class 1 Div 2 solar battery system, or remote industrial power upgrade, this guide explains what Class 1 Division 2 means, which Battle Born batteries are built for these applications, and what else needs to be considered when integrating batteries into a classified-location power system.

Battle Born Batteries offers Class 1 Division 2 certified LiFePO4 batteries for hazardous-location power applications, including oil and gas sites, methane capture systems, industrial backup power, SCADA systems, remote monitoring, solar battery systems, and UPS battery backup.

For operators, engineers, system integrators, and field teams working around pipelines, wellheads, compressor stations, production skids, vapor recovery systems, and remote industrial sites, this certification matters. It helps separate general-purpose batteries from power solutions designed for environments where flammable gases or vapors may occasionally be present.

Battle Born Has C1D2-Certified Lithium Batteries

Battle Born Batteries offers Class 1 Division 2 certified lithium batteries designed for hazardous-location power where explosive gases or vapors may occasionally be present.

These batteries are a strong fit for operators and system integrators working around oil and gas infrastructure, methane capture systems, remote monitoring equipment, industrial backup power, and other critical field applications that may be in Class 1 Div 2 locations.

Battle Born’s Class 1 Division 2 certified battery options include standard LiFePO4 models available through Battle Born, as well as Low Temp BMS variants available for pre-qualified industrial applications.

*The LT models use a Low Temp BMS configuration for industrial systems that are specified around much lower charge rates. These models are not sold as standard public products. Instead, Battle Born pre-qualifies the application before taking an order to confirm that the battery, charge rate, temperature range, and system design are appropriate for the project.

For cold-weather C1D2 battery projects, hazardous-location UPS upgrades, or Class 1 Div 2 solar power systems, contact Battle Born’s Commercial Sales team to talk through your application.

Planning a Hazardous-Location Power Project?

Battle Born Batteries and Dragonfly Energy support C1D2 battery and power system applications for oil and gas, industrial, remote monitoring, methane capture, SCADA, solar, and hybrid power environments.

For some projects, the right solution may be a direct lithium battery replacement. For others, it may involve a larger system approach with power conversion, solar charging, low-temperature protection, smart monitoring, or enclosure integration.

If you are evaluating C1D2 battery backup or a hazardous-location power system, our team can help you talk through the application before you commit to a design.

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What Does Class 1 Division 2 Mean?

Class 1 Division 2 is a hazardous-location classification used for certain environments where flammable gases or vapors may be present.

The “Class 1” part refers to flammable gases or vapors. “Division 2” generally refers to locations where those gases or vapors are not normally present in dangerous concentrations, but could be present under abnormal conditions.

This is very common in many industries that have chemical processes or fuel transportation like oil and gas. A site may not have a hazardous vapor condition during normal operation, but a leak, failure, maintenance event, or abnormal condition could create a flammable atmosphere. Equipment used in that area needs to be suitable for the classified location to prevent unintended ignition of these potential vapors. 

You may see the distinction written several ways:

• Class 1 Div 2

• Class I Division 2

• C1D2

• CID2

• Class 1, Division 2

These terms are often used interchangeably in industry conversations, though formal documentation may use specific formatting.

Why C1D2 Certification Matters for Batteries

Batteries store energy and can deliver high current and are a fuel tank of sorts for power systems. In hazardous-location power systems, the battery C1D2 certification helps identify batteries that have been evaluated for use in classified environments where flammable gases or vapors may occasionally be present.

For these applications, certification can reduce risk, support system approval and meet insurance requirements. Electrical engineers and electricians are trained and required to spec components that are tested for C1D2 environments to meet these safety standards. 

Where Class 1 Div 2 Batteries Are Used

Class 1 Div 2 batteries are used in power systems that need reliable energy storage near classified or potentially hazardous environments.

Common applications include:

• Oil and gas production sites

• Chemical Processing Facilities 

• Remote valve stations

• Pipeline SCADA power systems and backup power

• Wellhead monitoring

• Compressor stations

• Vapor recovery units

• Methane capture systems

• Production skids

• Class 1 Div 2 solar power systems

• Hazardous location UPS systems

• Remote telemetry and communications

• Industrial backup power

• Edge-of-grid and off-grid monitoring sites

A C1D2 battery can also be used as part of a larger Class 1 Div 2 solar battery system or hazardous location UPS. These systems may support low-power remote telemetry, instrumentation, industrial communications, pressure monitoring, flow measurement, or other field equipment that needs dependable power without frequent battery replacement.

These loads may not always require large amounts of power, but they often require high reliability. If the battery fails, operators may lose data, visibility, control, emissions monitoring, or equipment uptime.

C1D2 Battery vs. Full Hazardous-Location Power System

A C1D2-certified battery is an important part of a hazardous-location power system, but it is not the only part.

A battery certification does not automatically make every component around it suitable for a Class 1 Division 2 location. The enclosure, wiring, charger, inverter, solar charge controller, fusing, disconnects, monitoring equipment, and installation method all need to be evaluated for the site.

For example, a Class 1 Div 2 battery may be one component inside a larger system that also includes:

• A NEMA-rated enclosure

• Solar panels

• Charge controllers

• DC-DC converters

• Inverters or inverter/chargers

• Fuses and disconnects

• Grounding and bonding equipment

• Remote monitoring devices

• Communications equipment

• Thermal management

• Cable penetrations and seals

Each part of the system needs to match the requirements of the installation. 

Class 1 Div 2 Lithium Batteries vs. Lead-Acid Batteries

Many industrial and oil and gas power systems have historically used sealed lead-acid or AGM batteries. They are familiar, available, and inexpensive upfront. But in remote and hazardous-location applications, lead-acid batteries can create ongoing reliability and maintenance challenges.

Lead-acid batteries require more frequent replacement, especially in extreme heat, cold, or cycling applications. Flooded lead-acid batteries require watering and maintenance. Lead-acid systems can also create off-gassing and ventilation concerns, which may complicate enclosure design or require separate battery cabinets. Corrosion is also a significant problem with lead-acid batteries, leading to potential system issues and additional maintenance. 

For industrial sites, reliability and reduced maintenance matter!

LiFePO4 batteries can help reduce those burdens. Compared to lead-acid, they typically offer:

• Longer cycle life

• More usable capacity per size and weight

• More stable voltage

• Faster recharge with minimal absorption charge

• Lower maintenance

• Better performance in cycling applications

• No watering

• No lead-acid off-gassing

• No corrosion

For hazardous-location and remote industrial power, replacing lead-acid is not only about battery performance. It can also reduce field maintenance, improve uptime, and support more reliable system design overall.

Class 1 Div 2 Solar Battery Systems

Solar power is a natural fit for many remote monitoring of oil and gas sites. Pipelines, valve stations, tank monitors, wellheads, and SCADA enclosures may be located far from utility power, but still need continuous power for monitoring and communications.

A Class 1 Div 2 solar battery system can store solar energy and provide backup power for critical field equipment. These systems may support RTUs, radios, modems, pressure sensors, gas detection, valve monitoring, tank level monitoring, or remote telemetry equipment.

However, a Class 1 Div 2 solar power system needs more than a solar panel and a battery. The system should be designed around:

• Site classification

• Battery certification

• Solar array size

• Daily energy use

• Required autonomy

• Low-sun and winter conditions

• Solar charge controller compatibility

• Enclosure rating

• Wiring methods

• Overcurrent protection

• Temperature range

• Remote monitoring needs

The battery also needs a charging strategy that matches its chemistry. If the system is moving from lead-acid to LiFePO4, the charge controller or charger must be compatible with lithium charging parameters.

For remote solar installations, a properly selected C1D2 battery can help improve reliability while reducing the maintenance burden that often comes with legacy lead-acid systems.

Hazardous Location UPS and Battery Backup

A hazardous location UPS or Class I Division 2 battery backup system provides backup power for critical equipment when the primary power source fails or becomes unstable.

Some systems only need enough runtime to ride through short power disturbances. Others may need hours or days of autonomy, especially in remote locations where site access is difficult or utility power is unavailable.

The battery system should be sized around the critical load, runtime requirement, voltage, temperature range, charging source, and site classification. For DC loads, a DC UPS may be the most efficient option. For AC loads, an inverter or AC UPS architecture may be required.

Cold Weather and C1D2 Battery Performance

Cold weather is one of the biggest challenges for remote oil and gas power systems.

Lead-acid batteries lose usable capacity in freezing conditions and may need frequent replacement in harsh climates.

LiFePO4 batteries require a different kind of cold-weather planning. They can discharge in extreme cold temperatures quite well, but charging below safe internal temperatures must be controlled. Quality lithium battery systems use battery management protections and low-temperature charging controls, charge-rate management, or internal heating to protect the cells.

Battle Born’s C1D2-certified battery lineup includes Low Temp BMS variants for industrial applications where lower charge rates are part of the system design. These LT models allow the BMS parameters to better match cold-weather charging requirements, making them useful for certain hazardous-location power systems exposed to freezing or subzero conditions.

For oil and gas sites in places like the Bakken, Alberta, sub-Arctic pipeline corridors, and other cold regions, a C1D2 battery system should be evaluated for:

• Minimum ambient temperature

• Charging source

• Charge rate

• Enclosure insulation

• Heater draw, if applicable

• Solar availability

• Required autonomy

• Service access during storms or freeze events

Cold-weather performance is not just a battery spec. It is a system design issue. The battery, charger, enclosure, insulation, and operating profile all affect whether the system will work through the worst conditions.

Choosing a C1D2 Battery Partner

For hazardous-location power, the battery supplier matters. You are not only choosing stored energy; you are choosing a component that may become part of a larger system involving critical loads, remote access, harsh weather, hazardous-location requirements, and long-term maintenance goals.

A strong C1D2 battery partner should understand how the battery interacts with the charger, enclosure, wiring, temperature conditions, solar or hybrid charging source, and the equipment it supports. This is especially important for industrial applications where batteries may support critical SCADA systems, RTUs, telemetry, methane capture equipment, remote monitoring, UPS backup, or other uninterruptible field loads.

Battle Born Batteries and Dragonfly Energy support oil and gas power projects ranging from battery replacement to larger system integration. That may include lithium battery selection, C1D2 requirements, low-temperature performance, solar charging, backup power, monitoring, and application-specific support.

For operators and integrators, the goal is not simply to install a different battery. The goal is to build a power system that fits the site, reduces maintenance, improves uptime, and supports the equipment that keeps operations visible and controlled.

If you are planning a Class 1 Div 2 battery backup system, hazardous location UPS, or Class 1 Div 2 solar power system, Battle Born’s U.S.-based team can help evaluate the battery and system requirements for your application.

⚡️ For a deeper look at how Dragonfly Energy and Battle Born Batteries approach hazardous-location power in the oil and gas industry, watch our Powering Oil & Gas training webinar on C1D2-certified lithium battery solutions for extreme environments.

FAQs About Class 1 Div 2 Batteries

Q: What is a Class 1 Div 2 battery?

A Class 1 Div 2 battery is a battery approved for use in certain hazardous locations where flammable gases or vapors may occasionally be present under abnormal conditions. These batteries are used in applications such as oil and gas, methane capture, industrial backup power, SCADA, solar, and remote monitoring.

Q: What does C1D2 mean?

C1D2 stands for Class 1 Division 2. Class 1 refers to flammable gases or vapors. Division 2 generally refers to locations where those hazards are not normally present in dangerous concentrations but could be present under abnormal conditions.

Q: Does Battle Born make C1D2 batteries?

Yes. Battle Born offers Class 1 Division 2 certified LiFePO4 battery options for hazardous-location power applications, including oil and gas sites, methane capture systems, industrial backup, solar, UPS, SCADA, and remote monitoring systems.

Q: Which Battle Born batteries are C1D2 certified?

Battle Born C1D2-certified battery options include BB10012, BB10012LT, BBGC2, BBGC2LT, BBGC3, BBGC3LT, BB1275, and BB1275LT. The LT models use a Low Temp BMS configuration and are available for pre-qualified industrial applications through Battle Born’s Commercial Sales team.

Q: Can I use a regular lithium battery in a hazardous location?

Not without confirming that the battery and full system are suitable for the site classification. A lithium battery may use safe, stable chemistry but still not be approved for Class 1 Division 2 hazardous-location use.

Q: Are all LiFePO4 batteries C1D2 certified?

No. LiFePO4 describes the battery chemistry. C1D2 certification refers to approval for certain hazardous-location environments. A battery can use LiFePO4 chemistry without being C1D2 certified.

Q: What is a Class 1 Div 2 solar battery system?

A Class 1 Div 2 solar battery system is a solar-powered energy system designed with components, batteries, enclosures, wiring, and installation methods appropriate for the classified location. These systems are often used for remote SCADA, pipeline monitoring, valve stations, tank monitoring, and off-grid oil and gas equipment.

Q: Do I need a C1D2 enclosure if the battery is C1D2 certified?

It depends on the full system and installation location. The battery, enclosure, wiring, charger, inverter, monitoring equipment, and other components should all be reviewed for the site requirements. A C1D2 battery is important, but it does not automatically make the entire system suitable for the location.

Q: What is the difference between C1D2 and NEMA 4X?

C1D2 relates to hazardous-location suitability where flammable gases or vapors may be present. NEMA 4X relates to environmental protection from conditions such as corrosion, water, and dust. They address different risks and are not interchangeable.

Q: Can C1D2 batteries be used for SCADA backup?

Yes. C1D2 lithium batteries can be a strong fit for SCADA, RTU, telemetry, and remote monitoring backup when the system is properly sized and installed for the location.

Q: Can C1D2 batteries be used in oil and gas solar systems?

Yes. Class 1 Div 2 lithium batteries can be used in oil and gas solar power systems when the battery and full system are properly designed for the classified location, load requirements, charging source, enclosure, and environmental conditions.

Q: Who should evaluate a C1D2 battery installation?

A qualified engineer, electrician, system integrator, or site authority familiar with hazardous-location requirements should evaluate the installation. The authority having jurisdiction, site standards, and company engineering requirements may also apply.