Description
PMNN4813B IMPRES 2 Li-Ion 2850mAh IP68 Submersible Battery
Genuine Motorola Solutions Original slim lithium-ion battery with IMPRES 2 adaptive power management for APX N30 and APX N50.
The Motorola PMNN4813B is an authentic original equipment manufacturer (OEM) rechargeable lithium-ion battery engineered specifically for Motorola APX N30 and APX N50 portable two-way radios. Designed for patrol officers, municipal security teams, transit staff, and commercial field crews, this battery delivers high energy capacity in a streamlined, lightweight housing. Sourced directly from our verified inventory of Motorola Two-Way Radio Batteries, the PMNN4813B provides 2,850 mAh of reliable power to keep critical field communications operational through full duty cycles.
Engineered with advanced IMPRES 2 microprocessor technology, the Motorola PMNN4813B optimizes charge cycles and battery service life. When docked in an IMPRES 2 charger, the battery transmits diagnostic data including actual capacity, service life, and usage history, automatically self-managing conditioning cycles to eliminate memory effect and prevent overcharging. Certified completely dust-tight and submersible up to 2 meters for 4 hours under IEC Standards (IEC 60529 IP68), the battery features an integrated silicone perimeter gasket that seals the radio’s battery compartment against driving rain, high-pressure water spray, and temporary submersions. Built to endure severe mechanical shock, high vibration, and drop impacts in accordance with DoD Standards (MIL-STD-810H), the PMNN4813B maintains a secure mechanical latch to the radio chassis while supporting workplace ergonomic health guidelines under OSHA Standards with its slim 0.57-inch profile and low weight of only 0.25 lbs.
Key Features & Benefits
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2,850 mAh High-Density Lithium-Ion Cell: Supplies consistent, shift-length power output for high-demand digital voice, GPS, and Bluetooth operation.
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IMPRES 2 Intelligent Power Management: Extends overall cycle life by up to 60% compared to standard cells and automates conditioning when used with IMPRES 2 chargers.
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Ultra-Slim & Lightweight Profile: Measures only 0.57 inches thick and weighs just 0.25 lbs, minimizing radio bulk on duty belts and tactical vests.
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Submersible IP68 Ingress Protection: Sealed against complete dust penetration and water immersion up to 2 meters for 4 hours.
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Dedicated APX N-Series Architecture: Engineered exclusively for seamless physical and electrical mating with Motorola APX N30 and APX N50 portables.
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Heavy-Duty Rail Latching: Rugged guide channels and positive-locking release catch prevent battery dislodgement during vehicle ingress or physical scuffles.
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No Memory Effect: High-grade Li-Ion chemistry allows top-off charging at any time without degrading usable capacity.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
PMNN4813B |
| Replaces Catalog Numbers |
PMNN4813A, PMNN4813 |
| Product Type |
Rechargeable Portable Radio Battery |
| Cell Chemistry |
Lithium-Ion (Li-Ion) |
| Nominal Battery Capacity |
2,850 mAh (Typical) |
| Power Technology |
IMPRES™ 2 Smart Battery Technology |
| Ingress Protection Rating |
IEC 60529 IP68 (Submersible to 2 Meters for 4 Hours) |
| Hazardous Location (HazLoc) Rating |
None (Standard Non-HazLoc) |
| Military Standards |
MIL-STD-810C, 810D, 810E, 810F, 810G, 810H |
| Target Radios |
Motorola APX N30, Motorola APX N50 |
| Dimensions (W x H x L) |
1.9 x 0.57 x 4.61 in (48.26 x 14.48 x 117.09 mm) |
| Weight |
0.25 lbs (113.4 g / 113.398 g) |
| Operating Temperature (Discharge) |
-22°F to +140°F (-30°C to +60°C) |
| Charging Temperature (Recommended) |
+41°F to +104°F (+5°C to +40°C) |
| Color / Finish |
Matte Black Textured Finish |
Compatibility
Compatible Motorola Portable Two-Way Radios
What’s Included
| Description |
SKU / Model |
Status |
| Motorola IMPRES 2 Li-Ion 2850mAh IP68 Battery |
PMNN4813B |
Included |
| Factory Battery Safety & Instruction Leaflet |
Official Document |
Included |
| 2-Inch / 2.5-Inch Belt Clip |
PMLN8369 / PMLN8370 |
Sold Separately |
| IMPRES 2 Desktop Charging Station |
PMPN4820 / PMPN4594 |
Sold Separately |
Recommended Accessories & Replacement Hardware
Charging Infrastructure
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Motorola PMPN4820 IMPRES 2 Single-Slot AC Desktop Charger – Fast-rate desktop charger cradle with power supply, optimized to analyze, calibrate, and charge APX N30 and N50 batteries.
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Motorola PMPN4594 IMPRES 2 6-Pocket Multi-Unit Charger – Fleet charging station supporting simultaneous high-rate charging, display diagnostics, and automated conditioning for APX N-Series batteries.
Audio Accessories & Microphones
Carrying & Suspension Solutions
More Resources
Frequently Asked Questions
What is the difference between part numbers ending in "A", "B", or having no letter?
There is no operational, physical, or capacity difference. Motorola Solutions uses trailing letter suffixes (such as A, B, or C) to designate internal manufacturing revisions, cell supplier batches, and production updates. Part numbers cataloged as PMNN4813, PMNN4813A, or PMNN4813B share identical 2,850 mAh capacity, IP68 submersion ratings, and radio chassis compatibility.
What are the benefits of IMPRES 2 technology over standard radio batteries?
IMPRES 2 technology incorporates an internal digital memory chip that continuously tracks charging cycles, cell degradation, and run-time metrics. When used with an IMPRES 2 charger, the system eliminates the chemical memory effect, optimizes charging algorithms to prevent thermal stress, and extends the overall usable lifespan of the battery by up to 60% compared to standard non-IMPRES batteries.
Can this battery be charged in older legacy APX chargers?
The PMNN4813B is designed for the APX N-Series footprint. It requires modern IMPRES 2 charging hardware, such as the Motorola PMPN4820 single-unit charger or PMPN4594 multi-unit charger. Legacy APX 6000/7000/8000 series chargers have different pocket dimensions and contact alignments and are not compatible.
Is the PMNN4813B rated for hazardous or explosive environments (HazLoc)?
No. The PMNN4813B carries no intrinsic safety rating and is not certified under UL/TIA-4950 standards. For operations inside classified hazardous locations containing flammable gases or combustible dusts, an approved HazLoc-rated battery specifically certified for the host radio model must be used.
What does the IP68 rating mean for field durability?
An IP68 ingress rating signifies that the battery is completely sealed against blowing dust and sand, and is capable of continuous water immersion up to 2 meters (6.6 feet) for up to 4 hours when latched to an IP68-rated APX N30 or APX N50 radio.
Warranty
24-month manufacturer’s replacement warranty against defects and capacity loss.
