The Motorola PMNN4810 battery is the only R7 pack that an oil refinery safety officer will sign off on. It carries TIA4950 UL certification for intrinsically safe operation in hazardous locations where flammable gases, vapors, or combustible dust are present. A standard Li-Ion battery under fault conditions can generate enough thermal energy to become an ignition source. The PMNN4810 is engineered so that its electrical output and surface temperature stay below ignition thresholds even during a short circuit, overcharge, or physical crush event. This is not a firmware limit. It is a hardware-level design constraint verified by independent laboratory testing.
This R7 intrinsically safe battery also holds the highest capacity in the R7 power lineup at 3200 mAh. Paired with the IMPRES self-calibration feature, the charger actively recalibrates the pack’s state-of-charge reading with every full cycle. The “40 percent remaining” indicator means 40 percent remaining, not a guess that drops to zero five minutes later. IP68 submersible protection matches the R7 chassis rating. The 18-month warranty extends six months beyond the standard PMNN4808 coverage. For mine sites, chemical processing plants, and fuel storage depots where a spark is unacceptable and a dead battery is a safety incident, the PMNN4810 is the pack that eliminates both risks in a single SKU.
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.
A standard battery in a hazardous location is a potential ignition source. A dead battery in a hazardous location is a stranded worker. The Motorola PMNN4810 battery addresses both threats in one pack. It is the R7 battery line’s ceiling: maximum capacity, maximum safety certification, maximum warranty.
TIA4950 Intrinsically Safe: Certified for Hazardous Environments
Intrinsically safe certification is not a marketing label. It is a laboratory-verified assurance that the device cannot cause ignition in a specified hazardous atmosphere. The Motorola PMNN4810 battery meets TIA4950, the North American standard for portable radio IS compliance. Every cell, every protection circuit, every connector contact is designed so that the energy released under any single fault condition stays below the ignition energy of the target gas or dust group. A short across the battery contacts does not produce a spark hot enough to ignite methane. An overcharge event does not raise the cell surface temperature above the auto-ignition point of propane. This certification is mandatory for oil and gas platforms, refineries, chemical storage areas, and grain handling facilities. Using a non-IS pack in these environments is a regulatory violation and a safety liability. The PMNN4810 removes both.
3200mAh with IMPRES Self-Calibration: Runtime You Can Trust
Battery gauges lie. They estimate remaining capacity from voltage curves and discharge history. Over time, the estimate drifts. The PMNN4810 3200mAh TIA4950 corrects that drift with IMPRES self-calibration. The charger periodically performs a full discharge-recharge cycle during scheduled charging windows. The battery’s internal fuel gauge recalibrates against the actual measured capacity. The percentage displayed on the R7 screen reflects real remaining energy, not an extrapolation from aging data. The 3200 mAh capacity provides the longest runtime in the R7 battery family. A worker entering a classified zone for an extended maintenance shift carries the maximum available energy budget. No mid-shift exit to swap a pack.
18-Month Warranty: Confidence That Outlasts the Standard
Hazardous environment certifications add cost to a battery. This IMPRES self-calibrating Li-Ion battery justifies that cost with an 18-month warranty. The standard OEM battery warranty runs 12 months. The PMNN4810 extends coverage by 50 percent. At the end of the warranty period, the pack is guaranteed to retain at least 80 percent of its rated 3200 mAh capacity. The self-calibration feature extends the useful cycle life by preventing the chronic undercharging that occurs when a degraded gauge signals “full” before the cells are actually saturated. An 18-month warranty on a hazloc-certified pack signals manufacturer confidence in the cell quality and the protection circuit design.
Technical Specifications and Warranty
Every Motorola PMNN4810 battery is a genuine OEM product with full warranty coverage.
- Chemistry: Lithium-Ion (Li-Ion)
- Capacity: 3200 mAh (nominal)
- Voltage: 7.4 V (nominal)
- Certification: TIA4950 UL Intrinsically Safe (hazardous locations)
- Protection: IP68 submersible
- Charging: IMPRES self-calibration technology
- Compatibility: Motorola R7 (UL-rated model)
- Warranty: 18 months, 80% minimum capacity guarantee
- Temperature Range: Operating range matched to R7 IS specifications
