The Motorola PMNN4808 battery is the only pack that preserves the IP68 submersible rating of your Motorola R7 radio. The R7 is certified for 2-meter water immersion. That certification depends on the battery seal meeting the same IP68 standard as the radio chassis. An aftermarket battery without an IP68 gasket creates a leak path directly into the radio’s power contacts. Water enters through the battery interface and corrodes the internal pins. The radio fails. The IP68 rating on the spec sheet becomes meaningless. A genuine PMNN4808 eliminates that risk at the most vulnerable junction in the device.
This R7 IP68 Li-Ion battery delivers 2450 mAh at 7.4 volts, extending talk time to match the R7’s full-shift design target. The Li-Ion cells are tested and matched within the MOTOTRBO energy ecosystem, communicating state-of-charge, temperature, and cycle count to the IMPRES charger for optimized charge curves. Operating range spans -20°C to +60°C, covering cold-storage warehouses and outdoor summer job sites without capacity collapse at either extreme. At 148 grams and 116 × 56 × 23 millimeters, it maintains the R7’s balanced hand feel without adding bulk. When the original pack that shipped with the R7 reaches its end of life, this is the direct OEM replacement that keeps the radio performing to its certified specifications.
Description
We supply original Motorola Solutions products through our authorized distribution channel. Every unit includes factory packaging, original accessories, and full manufacturer warranty eligibility. Motorola®, MOTOTRBO™, and APX™ are registered trademarks of Motorola Solutions, Inc.
The R7 is one of the few portables with a true IP68 submersible rating. That rating extends only as far as the weakest seal in the system. The Motorola PMNN4808 battery forms the largest single seal surface on the radio. A non-IP68 pack turns an R7 into a radio that is only waterproof until the first time it gets wet.
IP68: Why the Battery Seal Determines Whether the Radio Survives
An IP68 radio submersed in two meters of water has water pressure pressing against every gasket simultaneously. The Motorola PMNN4808 battery is the only pack whose gasket was tested as part of that same IP68 certification. The seal between the battery and the radio chassis is not a generic O-ring. It is a precision-molded silicone gasket that compresses to a specified torque against the radio’s contact block. An aftermarket pack with a flat-cut foam gasket compresses unevenly. Water tracks along the gap. The radio’s internal pins corrode over multiple wet-dry cycles. The failure is not immediate. It is cumulative, appearing weeks or months after the first exposure, when corrosion has built enough resistance to interrupt the power circuit. A genuine PMNN4808 prevents that entire failure chain.
2450mAh with IMPRES Intelligence: The Right Charge Every Time
Battery capacity on a spec sheet assumes ideal conditions. Real-world use involves cold mornings, partial top-ups during breaks, and chargers shared across a fleet. This PMNN4808 2450mAh replacement communicates with the IMPRES charger at every dock. The charger reads the pack’s temperature, voltage slope, and internal resistance before applying current. A cold pack from an outdoor winter shift receives a reduced initial charge rate until the cell temperature rises above the safe threshold. A warm pack from indoor use charges at full speed. The charging algorithm adapts to the pack’s age, adjusting termination voltage as internal impedance increases over hundreds of cycles. An aftermarket pack sends dummy data or no data. The charger defaults to a conservative generic profile. The user gets a slower charge and a shorter total lifespan.
-20°C to +60°C: Battery Chemistry That Follows the Radio Anywhere
The R7 is built for industrial environments. This submersible Motorola radio pack is built for the same. The cells maintain rated discharge current at -20°C, where standard Li-Ion packs experience significant voltage sag. A cold-storage warehouse worker checking inventory at -18°C gets full transmit power. The pack operates at +60°C without thermal throttling, covering outdoor construction in direct summer sun. The plastic housing uses a glass-fiber-reinforced polycarbonate blend that resists impact cracking at low temperatures and softening at high temperatures. The 148-gram weight maintains the R7’s balance point so the radio does not become top-heavy or bottom-heavy with a fresh pack.
Technical Specifications and Warranty
Every Motorola PMNN4808 battery is a genuine OEM product with full warranty coverage.
- Chemistry: Lithium-Ion (Li-Ion)
- Capacity: 2450 mAh (nominal)
- Voltage: 7.4 V (nominal)
- Protection: IP68 (submersible, 2 meters)
- Temperature Range: -20°C to +60°C operating
- Compatibility: Motorola R7, R7A series portables
- Charger: IMPRES charger compatible with full data communication
- Dimensions: 116 × 56 × 23 mm
- Weight: 148 g
