OEM Motorola PMNN4066, IMPRES Li-Ion 1500 mAh, submersible battery, IP57 Rating.  Compatible with MOTOTRBO XPR 6000 series.

IMPRES batteries when used with an IMPRES charger provide automatic, adaptive reconditioning, end-of-life display, and other advanced features. Data is stored in the battery and communicated to the charger via a unique IMPRES communication protocol which is designed to maximize talk-time and optimize battery cycle life — all automatically.