Motorola PMPN4639 12V DC Vehicle Charger for APX NEXT and APX N70 Radios

The Motorola PMPN4639 is an OEM 12V DC vehicle charger designed to keep compatible Motorola APX NEXT and APX N70 radios powered while personnel are on the road. It provides fast in-vehicle charging and securely holds the radio in place during transportation.

Designed for police vehicles, fire apparatus, ambulances, utility trucks, command vehicles and other fleet installations, the PMPN4639 allows users to recharge a compatible radio battery between calls or while traveling to the next assignment.

The complete vehicle-charger kit includes a secure radio cradle, retention strap, mounting hardware and a 12V hardwire power cable. An optional Motorola PMPN4649 battery adapter is required when charging a compatible battery by itself without the radio.

Motorola PMPN4639 Quick Specifications

What Radios Does the PMPN4639 Work With?

The Motorola PMPN4639 vehicle charger is designed for the following radio families:

• Motorola APX NEXT
• Motorola APX NEXT XE
• Motorola APX NEXT XN
• Motorola APX N70
• Motorola APX N70 XE

The charger accepts a compatible radio with its battery installed. The retention strap helps keep the radio secured in the cradle while the vehicle is moving.

Browse the Motorola APX NEXT product category or read the complete Motorola APX radio guide for additional radio and accessory information.

Does the PMPN4639 Fit APX 6000 or APX 8000 Radios?

No. The PMPN4639 should not be used for traditional APX radios such as:

• Motorola APX 6000
• Motorola APX 6000XE
• Motorola APX 7000
• Motorola APX 7000XE
• Motorola APX 8000
• Motorola APX 8000XE
• Motorola APX 900
• Motorola SRX 2200

These radios use a different battery and vehicle-charging platform. For traditional APX radios, select a charger specifically designed for that battery form factor.

APX NEXT Batteries Compatible with the PMPN4639

When attached to a compatible APX NEXT radio—or installed in the optional PMPN4649 battery adapter—the PMPN4639 supports the following batteries:

Battery compatibility can depend on battery revision and charger firmware. Confirm the complete battery number before ordering equipment for a fleet.

APX N70 Batteries Compatible with the PMPN4639

The charger also supports the primary Motorola APX N70 battery platform.

The PMNN4816 is the standard-capacity APX N70 battery. The PMNN4817 provides higher capacity for extended shifts. The PMNN4818 is the safety-rated battery option for approved radio configurations.

Browse the complete selection of Motorola radio batteries.

Charging a Radio vs Charging a Battery Alone

The PMPN4639 can be used in two different configurations.

Charging a Radio with Its Battery Installed

A compatible APX NEXT or APX N70 radio can be placed directly into the vehicle charger with the battery attached. The adjustable retention strap secures the radio during vehicle movement.

Charging a Battery Without the Radio

The Motorola PMPN4649 adapter is required when charging a compatible battery by itself. The battery snaps into the adapter before the adapter is placed into the vehicle-charger cradle.

The battery adapter is useful when:

• A spare battery must be charged while the radio remains in service
• Several users share the same vehicle
• The agency rotates batteries between shifts
• The radio is needed away from the vehicle
• A charged replacement battery must remain available

Do not place a loose battery directly into the charger without the correct adapter.

PMPN4639 Vehicle Installation

The PMPN4639 is designed for permanent installation in a vehicle. The complete kit generally includes:

• Vehicle-charger cradle
• Adjustable radio-retention strap
• Mounting bracket
• Mounting hardware
• 12V DC hardwire power cable
• Installation documentation

The charger should be installed where:

• The driver can safely insert and remove the radio
• The charger does not interfere with vehicle controls
• The radio display and charger indicator remain visible
• The retention strap can be operated easily
• Airbags and other safety systems are not obstructed
• Wiring can be properly routed and protected
• The charger does not create a projectile hazard

Professional installation is recommended. Improper wiring can damage the charger, radio, vehicle electrical system or battery.

Hardwired Power Connection

The PMPN4639 is normally connected directly to a compatible 12V vehicle electrical system. It is not simply a plug-in cigarette-lighter travel charger.

Hardwired installation provides:

• A secure electrical connection
• Cleaner installation
• Reduced risk of accidental disconnection
• Reliable charging in fleet vehicles
• Better cable management
• Permanent availability for assigned vehicles

Installation should include the correct fuse protection and follow Motorola’s wiring instructions and the vehicle manufacturer’s requirements.

Charging Status Indicator

The charger includes an indicator that communicates charging status. Depending on the radio, battery and charger condition, the indicator may show that:

• The battery is charging
• Charging is complete
• Charging is delayed because of temperature
• The battery or charger requires attention
• The radio is not seated correctly

If charging does not begin, confirm that the radio or battery adapter is fully seated and that the vehicle is supplying power to the charger.

PMPN4639A vs PMPN4639B

PMPN4639 is the base product number. PMPN4639A and PMPN4639B identify Motorola product revisions.

Both revisions belong to the same basic vehicle-charging platform. Unless a specific contract or fleet standard requires the A revision, the current PMPN4639B is normally the preferred option.

PMPN4639 vs PMPN4604

The PMPN4639 is designed for permanent vehicle installation, while the PMPN4604 is an AC-powered desktop charger.

Choose the PMPN4639 for installed in-vehicle charging. Choose the Motorola PMPN4604 desktop charger for charging at a desk, station or home.

PMPN4639 vs PMPN4688 Travel Charger

The PMPN4639 and PMPN4688 both provide mobile charging, but they serve different applications.

Choose the PMPN4639 for a permanent police, fire, EMS or utility-vehicle installation. Choose the PMPN4688 when portability is more important than a permanently secured radio cradle.

PMPN4639 vs RLN6434

The RLN6434 is intended for batteries used with traditional APX radios, including selected APX 6000, APX 7000 and APX 8000 configurations.

The PMPN4639 is designed for the newer APX NEXT and APX N70 platforms. The two products should not be treated as interchangeable.

Choose the charger that matches the exact radio and battery platform.

Compatible and Alternative Chargers

View the complete selection of APX NEXT and APX NEXT XN chargers.

Motorola PMPN4649 Battery Adapter

The PMPN4649 is the battery-only adapter for the PMPN4639 vehicle charger. It supports approved batteries from the APX NEXT, APX NEXT XN and APX N70 platforms.

The adapter is required when:

• Charging a battery without a radio
• Maintaining a charged spare battery in the vehicle
• Rotating batteries between users
• Charging a battery while the radio remains in service

One adapter is needed for each vehicle charger being used for battery-only charging.

Other Compatible APX NEXT Products

Complete an APX NEXT vehicle installation with compatible accessories such as:

• Motorola PMMN4135A APX NEXT speaker microphone
• Motorola PMMN4136A APX NEXT speaker microphone
• Motorola PMMN4138A APX NEXT XN speaker microphone
• Motorola PMMN4154A XVE500 extreme-temperature speaker microphone
• Motorola AN000296A01 APX NEXT antenna
• Motorola AN000297A01 all-band antenna
• Motorola PMLN7948A hybrid leather holster
• Motorola PMLN7947A plastic carry holster

Use the Motorola APX remote speaker microphone guide to compare compatible microphone options.

Other Compatible APX N70 Products

Compatible APX N70 products include:

• Motorola PMNN4817A 4,400mAh battery
• Motorola PMLN8371A plastic carry holster
• Motorola PMLN8372A hybrid holster for the standard battery
• Motorola PMLN8373A hybrid holster for the high-capacity battery
• Motorola PMKN4265A programming cable
• Motorola PMLN8297A NEXUS PTT adapter

Accessory compatibility depends on the radio model, battery thickness, firmware and required safety classification.

Is the PMPN4639 HAZLOC Approved?

The PMPN4639 is not designed to be operated in a hazardous atmosphere unless the charger, vehicle installation and location are specifically approved for that use.

It may charge compatible safety-rated batteries, including selected NNTN9217, NNTN9090, PMNN4812, PMNN4818 and PMNN4896 revisions. However, placing a safety-rated battery or radio in the charger does not make the vehicle charger HAZLOC certified.

Follow the radio manufacturer’s instructions and your organization’s hazardous-location procedures.

OEM Motorola vs Replacement Vehicle Chargers

An OEM Motorola PMPN4639 is engineered for the physical dimensions, power requirements and charging contacts of compatible APX NEXT and APX N70 radios.

OEM advantages include:

• Secure radio fit
• Adjustable vehicle-retention strap
• Correct charging-contact alignment
• Fast in-vehicle charging
• Motorola-approved power and mounting components
• Charge-status indication
• Battery-only charging with the PMPN4649 adapter
• Manufacturer quality control
• Motorola warranty coverage

Before selecting an aftermarket vehicle charger, confirm:

• Exact radio compatibility
• Battery compatibility
• Vehicle input-voltage requirements
• Hardwire cable inclusion
• Mounting hardware inclusion
• Radio-retention capability
• Battery-only charging support
• Warranty coverage

Frequently Asked Questions

Is PMPN4639 the same as PMPN4639A or PMPN4639B?

PMPN4639 is the base part number. PMPN4639A and PMPN4639B identify Motorola revisions. PMPN4639B is the current revision.

Does the PMPN4639 work with the APX NEXT?

Yes. It is designed for compatible Motorola APX NEXT radios and batteries.

Does it work with the APX NEXT XE?

Yes. The PMPN4639 supports compatible APX NEXT XE configurations.

Does it work with the APX NEXT XN?

Yes. It supports compatible APX NEXT XN radios and batteries, including approved PMNN4812 configurations.

Does it work with the APX N70?

Yes. It supports the Motorola APX N70 and APX N70 XE.

Does the PMPN4639 work with the APX N30 or APX N50?

No. The PMPN5042 vehicle-charging platform is designed for APX N30 and APX N50 radios and their PMNN4813 and PMNN4815 batteries.

Can it charge the radio with the battery attached?

Yes. The compatible radio and battery assembly fits directly into the vehicle charger.

Can it charge a battery without the radio?

Yes, but the PMPN4649 battery adapter is required.

Does the PMPN4649 adapter come with the charger?

Confirm current package contents when ordering. The PMPN4649 may be supplied or sold separately depending on the kit configuration.

Does the PMPN4639 plug into a cigarette-lighter outlet?

The standard kit is designed for permanent 12V DC hardwire installation. It should not be assumed to include a cigarette-lighter plug.

Does it include a mounting bracket?

The complete vehicle-charger kit normally includes the charger bracket, hardwire power cable and required installation components. Confirm package contents when purchasing used or open-box equipment.

Is professional installation recommended?

Yes. Proper installation helps prevent damage to the radio, charger and vehicle electrical system and keeps the equipment from becoming a hazard during sudden stops or collisions.

Can the charger remain powered when the vehicle is off?

That depends on how the charger is wired. The installer can select an appropriate switched or constant-power circuit based on agency requirements and Motorola’s installation instructions.

Will it drain the vehicle battery?

Any equipment connected to constant vehicle power can contribute to battery drain. Follow Motorola’s installation guidance and agency fleet procedures.

Does the PMPN4639 charge HAZLOC batteries?

It can charge compatible safety-rated batteries, but the charger and vehicle location are not automatically HAZLOC approved.

Will it charge APX 6000 or APX 8000 batteries?

No. Traditional APX batteries use a different physical and charging platform.

What is the best desktop alternative?

The PMPN4604 is the closest single-unit desktop alternative for compatible APX NEXT and APX N70 radios and batteries.

What is the best multi-unit alternative?

The PMPN4591 provides six charging positions, six displays and six USB ports for compatible APX NEXT and APX N70 fleets.

Why Buy the Motorola PMPN4639?

The Motorola PMPN4639 provides secure, dependable in-vehicle charging for compatible APX NEXT and APX N70 radios. Its hardwired 12V design, fast charging, status indicator and adjustable retention strap make it well suited for public-safety and professional fleet vehicles.

Before ordering, confirm:

• Complete radio model
• Battery part number
• PMPN4639 revision
• Whether battery-only charging is required
• Whether a PMPN4649 adapter is included
• Vehicle voltage and wiring requirements
• Mounting location
• Required safety classification

Contact Battery Distributors for assistance matching the PMPN4639 with the correct APX NEXT or APX N70 batteries, battery adapter, desktop chargers, multi-unit chargers, microphones, antennas, holsters and other compatible accessories.