Description

A battery failure at a public safety incident is not an inconvenience. It is a responder out of communication. The Motorola PMNN4813A battery uses IMPRES 2 technology to turn battery failure from a surprise into a scheduled event.

IMPRES 2: When the Battery Tells You It’s Dying, Not the Other Way Around

First-generation IMPRES tracks voltage and temperature. The Motorola PMNN4813A battery adds a second layer of intelligence. The onboard fuel gauge stores cycle count, internal impedance, depth of discharge per cycle, and ambient temperature exposure history. When the pack docks in an IMPRES 2 charger, this data uploads to the fleet management software. A radio shop technician sees a dashboard of every APX N30 and N50 battery in the fleet. A pack that has exceeded 500 cycles shows a yellow flag. A pack with rising internal impedance across the last 50 cycles shows a red flag. The technician replaces it during scheduled maintenance. No officer discovers a dead battery at the start of a shift. No radio goes silent during an incident because a pack that looked fine on the charger gauge had actually degraded beyond usable capacity.

APX N-Series Power: Calibrated for the Next Generation

The APX N30 and N50 radios run on a different power architecture than legacy APX portables. This APX N30 N50 replacement battery is purpose-engineered for that architecture. The 2850 mAh capacity and 21.9 watt-hour energy rating are calibrated to the N-series current draw profile across digital transmit, receive, and standby modes. An IMPRES 2 charger completes a full charge cycle faster than IMPRES 1 by using more granular cell-level voltage monitoring to push current at the maximum safe rate through the constant-current phase. The pack transitions to constant-voltage topping earlier and more accurately, reducing total charge time without stressing the cells.

24-Month Warranty: Mission-Critical Confidence in Writing

Warranty length signals manufacturer confidence in cell quality and protection circuitry. This 24-month warranty radio battery extends coverage twice as long as the standard OEM pack. At the end of 24 months, the PMNN4813A is guaranteed to retain 80 percent of its rated 2850 mAh capacity. The IMPRES 2 diagnostic data supports warranty claims with objective cycle count and degradation history rather than subjective user reports. For a public safety agency managing a multi-year capital budget, a 24-month replacement cycle reduces the per-year battery cost by half compared to a 12-month cycle. The IP68 rating ensures that immersion-related failures are covered by the design, not excluded by the warranty terms.

Technical Specifications and Warranty

Every Motorola PMNN4813A battery is a genuine OEM product with full warranty coverage.

• Chemistry: Lithium-Ion (Li-Ion)
• Capacity: 2850 mAh (nominal) / 21.9 Wh
• Voltage: 7.4 V (nominal)
• Technology: IMPRES 2 with onboard diagnostics and data logging
• Protection: IP68 submersible (2 meters, up to 4 hours)
• Compatibility: Motorola APX N30, APX N50 portables
• Warranty: 24 months, 80% minimum capacity guarantee
• Fleet Management: IMPRES 2 charger data integration for battery health reporting