The MLP aluminum case delivers half the cost and 72% of the weight of the MLS, and its higher rated voltages deliver up to 20 joules of energy storage in a ½ inch height with 50 years of expected life at 45°C. While the MLS is available in operating voltages up to 250V, the MLP goes to 450V. It is limited to 85°C unless compressed to hold it flat, then it is rated 105°C.