Description
IMPRES Intrinsically Safe Li-Ion Battery for Motorola APX 4000HX
Genuine Motorola Solutions Original 2000 mAh IMPRES lithium-ion rechargeable battery with IECEx intrinsic safety certification and IP67 submersible sealing.
The Motorola NNTN4321A (also cataloged as NNTN4321) is an authentic original equipment manufacturer (OEM) intrinsically safe IMPRES™ lithium-ion rechargeable battery pack engineered specifically for the Motorola APX 4000HX hazardous-location portable radio. Designed for industrial plant technicians, oil and gas personnel, chemical processing crews, and utility specialists operating in explosive atmospheres, this specialized power pack delivers certified power without the risk of electrical ignition. Sourced directly from our verified inventory of Motorola Two-Way Radio Batteries, the NNTN4321A restores factory run-times and ensures complete compliance with plant safety mandates.
Engineered for extreme operating environments, the Motorola NNTN4321A is certified intrinsically safe under IEC Standards (IECEx) and CSA hazardous location standards, preventing internal thermal runaway or electrical arcing from igniting combustible gases, vapors, or airborne dust clouds. Built to withstand punishing industrial handling, the rugged outer enclosure features an elastomeric perimeter gasket certified to IEC 60529 IP67, providing total protection against dust penetration and water immersion up to 1 meter for 30 minutes. The internal microchip communicates directly with IMPRES chargers to track battery health, automate conditioning cycles, and prevent overcharging, ensuring reliable power across demanding shifts.
Key Features & Benefits
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IECEx & CSA Intrinsically Safe Certified: Approved for operation in classified hazardous locations with flammable vapors, gases, or combustible dust.
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IMPRES™ Smart Power Management: Automatically communicates usage data and charge cycles with IMPRES chargers to automate reconditioning and extend service life.
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IP67 Submersible Waterproof Protection: Precision-sealed housing protects against fine industrial dust and water submersion up to 1 meter for 30 minutes.
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2000 mAh Energy Density: Delivers reliable all-shift operating power in a streamlined, ergonomic profile designed for active field personnel.
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Eliminates Battery Memory Effect: Intelligent internal circuitry prevents cell degradation and charge memory without requiring manual conditioning.
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Factory OEM Construction: Engineered to strict Motorola physical and mechanical tolerances for a rattle-free lock on APX 4000HX transceivers.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
NNTN4321A / NNTN4321 |
| Product Type |
Intrinsically Safe Portable Radio Battery Pack |
| Chemistry |
Lithium-Ion (Li-Ion) |
| Capacity |
2000 mAh (Nominal) / 2050 mAh (Typical) |
| Voltage |
7.4V DC |
| Technology |
Motorola IMPRES™ Adaptive Energy System |
| Hazardous Location Certification |
IECEx / CSA Certified Intrinsically Safe |
| Ingress Protection Rating |
IP67 (Dust-Tight & Submersible to 1m for 30 min) |
| Operating Temperature Range |
-10°C to +60°C (+14°F to +140°F) |
| Housing Material |
Impact-Resistant HAZLOC Polymer |
| Color / Finish |
Matte Black Finish |
Compatibility
Compatible Motorola Portable Two-Way Radios
Recommended Accessories & Replacement Hardware
Charging Solutions
Antennas & Accessories
More Resources
Frequently Asked Questions
What is the difference between part numbers ending in "A", "B", or having no letter?
There is no functional, mechanical, or electrical difference. Motorola Solutions uses trailing letter suffixes (such as A, B, or C) to designate internal manufacturing revisions and production lots. A battery cataloged as NNTN4321, NNTN4321A, or a subsequent revision shares identical electrical capacity, IECEx intrinsic safety ratings, and device fitment.
Can this battery be used on standard APX 4000 radios?
The NNTN4321A is engineered specifically for the hazardous-location APX 4000HX (APX 4000XH). While it shares chassis rails with the standard APX 4000 series, using an intrinsically safe battery on a non-certified radio does not make the entire radio system intrinsically safe. Always verify your fleet's specific HAZLOC requirements.
What does IECEx certification mean for this battery?
IECEx certification confirms that the battery has been independently evaluated and certified under international standards for intrinsic safety. It verifies that the battery's internal electronics and exterior casing cannot produce sparks, excess thermal energy, or electrical discharge capable of igniting hazardous gas or dust environments.
Does this battery require manual conditioning?
No. When charged in a compatible Motorola IMPRES charging system (such as the PMPN4174A), the charger communicates with the battery’s onboard memory chip and automatically performs reconditioning cycles only when necessary to optimize longevity.
Can this battery withstand heavy water exposure?
Yes. The NNTN4321A is IP67 rated, meaning its sealed casing is dust-tight and resistant to water immersion up to 1 meter for 30 minutes.
Warranty
18-month Motorola Solutions manufacturer's warranty.
