Description
Rugged Submersible Power Pack for Professional Portable Radios
Equip your handheld two-way radio fleet with a durable, self-calibrating power source engineered to deliver up to 13 hours of continuous performance.
The genuine Motorola PMNN4491E is a professional-grade Motorola PMNN4491E IMPRES Li-ion Battery for XPR 7550e engineered to supply consistent, high-density energy to a broad range of APX and XPR series portable transceivers. Integrating the Motorola PMNN4491E into your operational framework provides the stable power required for maximum transmission output and pristine audio execution over long, demanding shifts. This model represents the current factory-authorized revision, serving as the direct upgrade replacement for previous legacy part numbers PMNN4491, PMNN4491A, PMNN4491B, PMNN4491C, and PMNN4491D.
Perfect for public safety personnel, heavy manufacturing environments, municipal public works crews, and field logistics operators, the Motorola PMNN4491E handles harsh real-world conditions without experiencing power drops. It features an exceptional IP68 submersibility rating, ensuring the battery housing remains entirely dust-tight and fully sealed against deep water immersion. Equipped with advanced IMPRES adaptive charging algorithms, the battery intelligently updates its own cell performance logging and calibration metrics natively when docked in a compatible charger, bypassing the need for manual, time-consuming reconditioning cycles.
To safeguard the structural lifecycle of the lithium cells, operators should charge the pack exclusively within factory-certified IMPRES single or multi-unit desktop cradles. Maintain clean electrical interface plates on the rear of the battery casing, as dirt or oil buildup can impede the telemetry bridge between the battery microchip and the transceiver or staging station.
Key Features & Benefits
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High-Density 2100 mAh Capacity: Yields reliable runtime spanning up to 13 hours to support workers through extended shifts.
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Extreme IP68 Weatherproofing: Provides top-tier ingress protection against dust entry and deep, continuous water submersion.
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Intelligent IMPRES Self-Calibration: Communicates cell analytics automatically to compatible chargers to prolong the overall battery lifecycle.
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Slim Form Factor Design: Maximizes energy density inside a low-profile chassis, maintaining radio portability and ergonomic handling.
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Simplified Fleet Administration: Removes the requirement for manual scheduling or overnight diagnostic cycles, boosting work team productivity.
Specifications
| Attribute |
Details |
| Brand |
Motorola |
| Model/SKU |
Motorola PMNN4491E (PMNN4491) |
| Product Type |
Portable Radio Battery |
| Voltage |
7.4V |
| Battery Chemistry |
Lithium-Ion (Li-Ion) |
| Capacity |
2100 mAh |
| IP Rating |
IP68 (Submersible) |
| Estimated Runtime |
Up to 13 Hours |
| Color |
Black |
Compatibility
Radios
|
|
|
|
| XPR3300 |
XPR3300e |
XPR3500 |
XPR3500e |
| XPR7350 |
XPR7350e |
XPR7380 |
XPR7380e |
| XPR7550 |
XPR7550e |
XPR7580 |
XPR7580e |
| APX900 |
APX1000 |
APX1000i |
APX3000 |
| APX4000 |
DEP550E |
DEP570E |
DP2400E |
| DP2600E |
DP4801E |
DGP5050E |
XiRP8668I |
| VX-P949 |
|
|
|
Recommended Accessories
- Motorola MOTOTRBO XPR 7550e Portable Two-Way Radio (XPR7550E) — A primary high-tier digital handheld transceiver powered efficiently by this 2100 mAh battery pack.
- Motorola PMPN4576A Single-Unit Charger (PMPN4576A) — An intelligent desktop charging staging cradle that reads the active IMPRES tracking telemetry of this battery.
Frequently Asked Questions
Does this battery require manual reconditioning cycles to prevent memory effect?
No, the built-in IMPRES self-calibration technology manages cell health automatically when placed on a compatible charger, eliminating the need for manual maintenance programs.
Is this battery waterproof if it gets dropped in a deep puddle?
Yes, the Motorola PMNN4491E features an advanced IP68 submersible rating, meaning it is dust-tight and fully sealed to protect internal electronics during water exposure.
Can I use this power pack with an older XPR 7550 non-e series radio?
Yes, it is fully backwards compatible and functions perfectly across both standard and enhanced XPR 3000/7000 and APX portable radio series.
Warranty
1-year manufacturer's warranty.
