The R7 Series batteries (PMNN4807, PMNN4809, PMNN4810) are considered IMPRES™ Gen 1.5. The IMPRES™ Self Calibration feature allows the battery to avoid going through long hours of calibration or reconditioning every month, when charged and maintained with the IIMPRES™ Single Unit Charger (PMPN4576) and IMPRES 2 Multi Unit Charger (PMPN4284 with SW Ver V2.01 and above) listed in radio’s Authorized Accessories List. These IMPRES™ Li-Ion batteries are designed to maximize talk time and optimize battery life cycle (up to 43% longer than standard battery) with trusted IMPRES™ chargers.
Workmanship: 24 months
Warranted to maintain 80% of rated capacity for 18 months when charged exclusively in IMPRES™ chargers
Warranted to maintain 80% of rated capacity for 12 months when charged exclusively in non IMPRES chargers
This Battery Warranty is valid for purchases in the U.S. and Canada only