Hahnel use only the most modern battery technology to make our Lithium Ion batteries. They feature a high energy density, have no memory effect and are produced to the highest quality standards. A built-in microprocessor safeguards the cells by limiting maximum voltage and by protecting against deep discharge, short circuit and overload. Features: Milliamp ere – 1120mAh Volts – 7.4V Watt – 8.3Wh Compatibility: The Hahnel HL-PL109 Li-Ion Battery is a replacement for the Pentax D-Li109.