The Power Products PM1912LIP is a high quality replacement battery for the BT-01942-001 and BT-01942-002. Backed by a two year warranty, this 4100mAh 7.4V battery fits the Harris P5100, P5130, P5150, P5200, P7100, P7130, P7150, P7170, P7200, P7230, P7250, P7270, M/A-COM Jaguar 700P, 700Pi, 710P, and SPD2000 two way radios. Powered by PolyMax HPC Lithium Polymer (LiPo) cells, it boasts longer runtimes compared to other battery options. An estimated 21 hours of usage per charge, depending on amount of radio traffic. Weighs in at 0.41lbs, which is less than NiMH and batteries with similar capacity. Greater cycle life compared to Lithium Ion (Li-ion), 500+ vs 300. A self-discharge rate of less than 5% per month, about one third that of NiMH batteries. Can be charged using original (OEM), Endura, and Logic chargers that are designed for Li-ion batteries.