Ultralife U9VL-JPFP6 Long-Life 9V Lithium Battery

Ultralife Next Generation 9-Volt Lithium Battery lasts up to 5 times longer than ordinary alkaline and 10 times longer than carbon-zinc. The replaceable battery has the highest energy density, flattest discharge voltage curve, longest shelf life, widest operating temperature range, and lightest weight of any comparable 9-volt battery.