Replacement for the nikon en el3e batteryonly the most modern battery technology is used in hahnel hl el3e batteryits technology is environmentally friendly and features a very high energy density with no memory effect the hahnel hl el3e battery is much smaller and lighter than any other rechargeable battery with similar capacity a built in microprocessor safeguards the cells by limiting maximum voltage and by protecting against deep discharge short circuit and overload suitable for the d