Motorola PMNN4403B Radio IMPRES Battery IP67 2150mh LiIon: PMNN4403A, PMNN4403
Order the Motorola PMNN4403B IMPRES Battery
Choose the Motorola PMNN4403B 2150mAh IMPRES Li-Ion battery when you need a compact, lightweight power source for a compatible Motorola APX or SRX radio. Its slim profile, 15.9Wh energy rating, intelligent charging support, and IP67 construction make it a dependable option for standard-shift professional communications.
Part Number |
PMNN4403 |
Tags |
The Motorola PMNN4403B IMPRES battery is a slim, lightweight rechargeable battery designed for compatible Motorola APX and SRX portable two-way radios. With 2150mAh capacity, 15.9 watt-hours of energy, lithium-ion chemistry, and intelligent IMPRES technology, it delivers dependable radio power without the size and weight of an extended-capacity battery.
The PMNN4403B is a practical battery for law enforcement, public safety, security, government, utilities, and industrial radio users who prioritize a compact radio profile and manageable carrying weight.
Motorola PMNN4403B Runtime
The PMNN4403B can provide up to approximately 12 hours of operation, depending on the radio, frequency band, features, and duty cycle used.
| Operating pattern | Approximate runtime |
| Typical standardized radio use | Up to approximately 12 hours |
| Frequent transmitting or poor signal coverage | Less than 12 hours |
| Light use with extended standby | Potentially longer |
Published runtime figures are laboratory estimates rather than guaranteed operating times. Actual battery life depends on:
- Radio model and frequency band
- Transmit-power setting
- Time spent transmitting
- Signal and system coverage
- GPS, Bluetooth and other wireless features
- Display and backlight use
- Speaker volume
- Ambient temperature
- Battery age and condition
For users who routinely work shifts longer than 10–12 hours or transmit frequently, a higher-capacity APX battery may be more appropriate.
Capacity and Watt-Hours
The PMNN4403B has a rated energy capacity of 15.9 watt-hours.
- Rated battery capacity: 2150mAh, or 2.15Ah
- Nominal voltage: approximately 7.4V
- Energy rating: 15.9Wh
Watt-hours measure the battery’s total stored energy and are especially useful when comparing batteries with different voltages or preparing lithium-ion batteries for transportation.
Compatible Motorola Radios
The Motorola PMNN4403B fits compatible configurations of the following portable radios:
- Motorola APX 6000
- Motorola APX 6000Li
- Motorola APX 6000XE
- Motorola APX 7000
- Motorola APX 7000L
- Motorola APX 7000XE
- Motorola APX 8000
- Motorola APX 8000XE
- Motorola SRX 2200
Radio versions and regional configurations can vary. Customers should verify the model number of the radio and the part number printed on the existing battery before ordering.
Key Features and Benefits
Slim, Lightweight Battery Profile
The PMNN4403B has a compact design that helps minimize the overall thickness and weight of an APX portable radio. It is ideal for officers, security personnel, supervisors, and other users who prefer a lighter radio and do not require the capacity of a large extended battery.
2150mAh Lithium-Ion Capacity
This battery provides 2150mAh of rechargeable lithium-ion capacity. Lithium-ion chemistry offers good energy density, low self-discharge, and no traditional memory effect, making the battery suitable for regular charging between shifts.
15.9 Watt-Hours of Energy
Motorola’s lithium-battery test information lists the PMNN4403B at 15.9Wh. This energy rating provides a standardized way to compare the PMNN4403B with other APX radio batteries.
Motorola IMPRES Technology
When paired with a compatible Motorola IMPRES charger, the PMNN4403B supports intelligent battery communication and adaptive charging. IMPRES technology can help:
- Select the proper charging process automatically
- Track battery usage and charging history
- Recondition the battery only when necessary
- Reduce manual battery-maintenance requirements
- Help identify batteries that are losing capacity
- Support more efficient management of radio-battery fleets
Using a compatible IMPRES charger is recommended for the battery’s complete smart-charging functionality.
IP67 Environmental Protection
The PMNN4403B is designed with an IP67-rated housing, providing protection against dust and temporary water immersion under defined test conditions. This makes it suitable for everyday public-safety and professional environments where equipment may encounter rain, dirt, dust, or accidental water exposure.
The battery must be correctly installed, properly latched, and free from physical damage to support the radio’s applicable environmental protection.
Product Specifications
| Specification | Details |
| Manufacturer | Motorola Solutions |
| Full part number | PMNN4403B |
| Related revisions | PMNN4403 and PMNN4403A |
| Battery family | IMPRES |
| Chemistry | Lithium-ion |
| Rated capacity | 2150mAh |
| Energy rating | 15.9Wh |
| Nominal voltage | Approximately 7.4V |
| Estimated operating time | Up to approximately 12 hours |
| Rechargeable | Yes |
| Environmental rating | IP67 |
| Battery profile | Slim/short |
| Approximate dimensions | 3.39 × 2.34 × 1.45 inches |
| Approximate weight | 5 ounces/142 grams |
| Smart-battery technology | Motorola IMPRES |
| HAZLOC approval | No |
| Recommended charger | Compatible Motorola IMPRES charger |
| Replacement option | Motorola PMNN4485-series battery, subject to radio compatibility |
An IP67 rating only addresses protection against dust and water. It does not mean that the battery is approved for use around flammable gases, vapors, combustible dust, or ignitable fibers.
PMNN4403B Versus Extended-Capacity Batteries
The primary advantage of the PMNN4403B is its compact size. Higher-capacity APX batteries can provide longer runtime, but they also increase the radio’s thickness and weight.
| Battery consideration | PMNN4403B |
| Size | Slim and compact |
| Weight | Approximately 5 ounces |
| Capacity | 2150mAh |
| Energy | 15.9Wh |
| Runtime | Up to approximately 12 hours |
| Best for | Standard shifts and lighter radio setups |
| HAZLOC use | Not approved |
Why Choose the Motorola PMNN4403B?
The PMNN4403B is a strong choice for users who want:
- A slim Motorola APX radio battery
- Up to approximately 12 hours of operation
- 2150mAh lithium-ion capacity
- 15.9 watt-hours of stored energy
- Motorola IMPRES smart-charging support
- IP67 protection against dust and temporary immersion
- Reduced weight compared with extended-capacity batteries
- Compatibility with multiple legacy APX and SRX radio models
Frequently Asked Questions
How long does the Motorola PMNN4403B last?
The PMNN4403B can provide up to approximately 12 hours of radio operation, depending on the radio model and operating conditions. Frequent transmissions, high transmit power, weak coverage, wireless features, cold temperatures, and battery age may reduce runtime.
How many watt-hours is the PMNN4403B?
Motorola lists the PMNN4403B at 15.9 watt-hours.
What is the capacity of this battery?
The genuine Motorola PMNN4403B has a rated capacity of 2150mAh. Online listings advertising 3000mAh or higher under this part number are generally describing aftermarket replacement batteries, not the original Motorola specification.
Is the PMNN4403B an IMPRES 2 battery?
No. The PMNN4403B is an original-generation IMPRES smart battery, not an IMPRES 2 battery. It can be used with compatible Motorola IMPRES charging equipment.
Is this battery waterproof?
The PMNN4403B has an IP67 rating, which provides dust protection and resistance to temporary immersion under controlled test conditions. It should not be described as permanently waterproof.
Is the PMNN4403B intrinsically safe?
No. This battery is not rated for HAZLOC or intrinsically safe operation.
What battery replaces the PMNN4403B?
The Motorola PMNN4485-series IMPRES 2 battery is commonly identified as the newer slim-profile replacement. Its suitability should be verified against the exact radio and charger configuration before ordering.
12 Month Warranty extended to 18 Months when used with IMPRES Charger
Fits: APX 6000, APX 6000 Li, APX 6000 XE, APX 7000, APX 7000 XE, APX 8000, APX 8000XE, SRX 2200
| Brand | Motorola |
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