The HL-40B compares to the original Olympus battery LI-40B or LI-42B. Hahnel is the world?s premier third party camera battery manufacture. This battery is just as powerful, safe and reliable as the Olympus version without paying a premium. Only the most modern battery technology is used in hähnel Lithium Ion Polymer batteries. They are environmentally friendly, feature a very high energy density and have no memory effect. The batteries are much smaller and lighter than any other rechargeable battery with similar capacity. All batteries 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. This battery will fit the following cameras :- D-630, FE-5500, IR-300, SP-700, MJU 700 and MJU 720SW