Motorola IMPRES 2 Li-Ion 3100 Mah UL TIA4950 Battery (PMNN4547A)

Motorola positions IMPRES 2 as the second-generation evolution of its intelligent battery ecosystem. On the official IMPRES 2 battery page, Motorola states that these batteries deliver higher capacity without an increase in size, share the same IP68 rating as APX radios, and provide 60% more charging cycles than traditional lithium-ion batteries when used with an IMPRES 2 charger. That positioning is important because the PMNN4547A is not merely a replacement battery; it is part of a broader power-management platform aimed at public safety, public works, and other demanding professional users.

The PMNN4547A occupies a particularly specialized niche inside that family. Unlike many standard-duty radio batteries, it is marketed as both rugged and HAZLOC oriented, with TIA4950 intrinsically safe UL certification when used with certified APX/SRX devices. That makes it relevant for users working in environments where spark or ignition risk must be tightly controlled, including certain industrial, utility, petrochemical, and emergency-response settings. The hazardous-location rating is not a generic feature of all radio batteries; it is one of the most important differentiators of this specific model.

Design and Features

IMPRES 2 battery architecture

Motorola’s IMPRES 2 platform is built around intelligent battery management and charging. Motorola states that IMPRES 2 batteries, when combined with IMPRES 2 chargers, can charge up to 40% faster and can be managed to extend the life of batteries kept in storage. On the family page, Motorola also says IMPRES 2 batteries provide 60% more charging cycles than traditional lithium-ion batteries. In practice, this means the PMNN4547A is designed not only to power a radio, but to work as part of an integrated charging and lifecycle-management system.

High-capacity rugged construction

The PMNN4547A is consistently described as a 3100 mAh Li-Ion battery with a rugged IP68 design. Motorola’s IMPRES 2 family page states that all IMPRES 2 batteries share the same IP68 rating as APX radios and can be fully submerged in two meters of water for up to four hours. Reseller listings for the PMNN4547A add that this model has an improved rugged IP68 submersible rating. Together, those details position the battery as suitable for hard daily use in wet, dusty, dirty, and physically demanding field conditions.

UL TIA4950 hazardous-location certification

A defining feature of the PMNN4547A is its TIA4950 HAZLOC intrinsically safe UL certification when paired with compatible certified radios. Magnum Electronics’ detailed listing explicitly states that the battery carries TIA4950 HAZLOC intrinsically-safe UL certification with UL certified APX/SRX devices, while MetroCom’s product text refers to ANSI/TIA 4950-A Classification Rating for select APX devices. This makes the PMNN4547A especially relevant in hazardous classified locations where standard batteries may not be acceptable.

Cold-weather and duty-environment focus

One reseller listing describes the PMNN4547A as having an improved operating temperature range of -10°C to -60°C and claims 17% more capacity than the NNTN8930 UL battery with better performance in cold environments. Because this specific comparison comes from a reseller rather than Motorola’s official product family page, it should be treated as a useful market detail rather than the single source of truth. Even so, it supports the broader theme that the PMNN4547A is intended for harsher-duty applications than a basic commercial radio battery.

Technology and Specifications

Core specifications

Current verified sources describe the PMNN4547A as follows:

• Chemistry: Lithium-ion
• Capacity: 3100 mAh
• Protection: Rugged, IP68
• Certification: UL TIA4950 / HAZLOC with certified radio combinations
• Weight: about 7.1 oz
• Dimensions: about 3.4" x 2.3" x 1.7"
• Warranty: 24 months on at least one current reseller listing.

These are the most consistent and defensible technical details available in the public sources reviewed. Motorola’s family page confirms the IMPRES 2 platform traits and IP68 family behavior, while reseller listings supply the exact PMNN4547A part-specific capacity and physical details.

Compatibility

The PMNN4547A is publicly listed as compatible with:

• APX 6000
• APX 6000XE
• SRX 2200
• APX 8000H
• APX 8000HXE

Some reseller pages also broadly mention APX 7000 Series or APX 8000 Series, but the most precise compatibility list I could verify in detail for PMNN4547A is the one above from the Magnum listing. Since hazardous-location certification can depend on the exact radio-plus-battery combination, buyers should verify the compatibility matrix for their exact radio model before purchase. That caution is an inference grounded in how HAZLOC certifications are typically applied and in the wording “with UL certified APX/SRX.”

Charger ecosystem

The PMNN4547A belongs to the IMPRES 2 ecosystem, and reseller listings cross-reference chargers such as the NNTN8844 IMPRES 2 Multi-Unit Charger and NNTN8860 IMPRES 2 Single Unit Charger. Motorola’s IMPRES 2 datasheet also makes clear that the system’s faster charging and lifecycle benefits depend on using compatible IMPRES 2 chargers. This is an important operational detail, because buyers seeking the full value of the battery should think in terms of a battery-plus-charger platform rather than the battery alone.

Firmware note

One current reseller listing notes that the battery requires radio firmware R25.01.00 or greater, otherwise the radio fuel gauge may be inaccurate. Because this appears in a detailed product listing rather than on Motorola’s family landing page, it is best treated as a deployment note worth checking rather than a universally proven platform rule. Still, it is useful and specific enough to mention for users integrating the battery into older radio fleets.

Applications and Use Cases

Public safety and emergency response

The PMNN4547A is particularly well suited to public safety users who rely on APX or SRX radios in demanding field conditions. Motorola’s IMPRES 2 family page explicitly mentions first responders and public works employees, and the battery’s rugged IP68 construction supports use in rain, mud, washdown conditions, and other harsh outdoor settings.

Hazardous industrial environments

Because the PMNN4547A is marketed with UL TIA4950 intrinsically safe certification, it is highly relevant for personnel working in hazardous classified environments, such as certain utility, industrial, petrochemical, fuel-handling, and related field operations. This is one of the strongest use-case signals in the product’s public descriptions.

Long-shift field operations

With 3100 mAh capacity and IMPRES 2 lifecycle positioning, the battery is also well suited to long-shift users who need extended runtime and fewer battery changes. This includes supervisors, public works crews, emergency teams, and specialist users carrying APX/SRX radios through full operational periods. The runtime implication is partly inferential, but it follows directly from the high-capacity specification and Motorola’s own emphasis on keeping people connected longer.

Advantages / Benefits

Higher capacity without a larger form-factor penalty

Motorola says IMPRES 2 batteries deliver higher capacity without an increase in size. For the PMNN4547A, that means buyers get a 3100 mAh battery in a rugged form factor designed to remain practical for wearable radio use.

Stronger water and dust protection

The IP68 rating is one of the battery’s clearest operational advantages. Motorola states IMPRES 2 batteries can be submerged in two meters of water for up to four hours, making them appropriate for hard-use field and emergency work.

Better lifecycle performance in the right charger system

Motorola’s claims of 60% more charging cycles and up to 40% faster charging with IMPRES 2 chargers make the PMNN4547A attractive not only for runtime but for long-term fleet economics. In a large organization, battery replacement intervals and charging efficiency can materially affect total operating cost.

Hazardous-location suitability

The UL TIA4950 certification is a major advantage over ordinary rugged batteries. It makes the PMNN4547A suitable for select high-risk environments where non-certified batteries may not be acceptable.

FAQ Section

What is Motorola IMPRES 2 Li-Ion 3100 mAh UL TIA4950 Battery (PMNN4547A)?

The PMNN4547A is a Motorola IMPRES 2 lithium-ion battery with 3100 mAh capacity, IP68 rugged protection, and UL TIA4950 hazardous-location certification for use with select certified APX and SRX radios.

How does Motorola PMNN4547A work?

It powers compatible portable radios like a standard rechargeable battery, but it is also part of Motorola’s IMPRES 2 ecosystem. When used with an IMPRES 2 charger, it can support faster charging and improved lifecycle performance compared with traditional lithium-ion battery systems.

Why is Motorola PMNN4547A important?

It is important because it combines high capacity, rugged IP68 protection, and intrinsically safe UL TIA4950 certification in one battery. That makes it especially useful for mission-critical users working in wet, dirty, or hazardous environments.

What are the benefits of Motorola PMNN4547A?

Its main benefits are 3100 mAh capacity, IP68 ruggedness, IMPRES 2 intelligent charging compatibility, longer lifecycle claims within the IMPRES 2 ecosystem, and UL TIA4950 HAZLOC certification for supported radio combinations.

Which radios are compatible with PMNN4547A?

Verified current listings identify compatibility with APX 6000, APX 6000XE, SRX 2200, APX 8000H, and APX 8000HXE. Because HAZLOC ratings depend on exact certified combinations, buyers should verify their exact radio model and certification needs before ordering.

Summary

The Motorola IMPRES 2 Li-Ion 3100 mAh UL TIA4950 Battery (PMNN4547A) is a specialized high-performance battery for select APX and SRX radios used in demanding and potentially hazardous environments. Its combination of 3100 mAh capacity, IP68 rugged protection, IMPRES 2 intelligent charging support, and UL TIA4950 intrinsically safe certification makes it more than a routine replacement battery. For organizations that need dependable runtime, harsh-environment durability, and hazardous-location compliance, the PMNN4547A is one of Motorola’s more important premium battery options.