Microtek Power DuraPrime Microtek Dura Strong MMTK2203624TT 220Ah/12V Inverter Battery With Advanced Dura Core Technology Inverter Battery. Power your happiness with the all-new Dura Core Tubular Technology (Super Alloy and Binder Additives) that provides longer battery life. Other exceptional features include extended backup and faster recharge to give you more power in your daily life.