Check the condition of the battery cable clamps, terminals, and cables for corrosion and tightness.
After jumping starting the Jeep you need to check the charging voltage and after a long drive check the battery voltage while idling; then after you shut off the Jeep you need to monitor the resting battery voltage and observe where the battery voltage settles at.
IF the voltage settles around 12.5V after a couple hours; then restart the Jeep and observe where the voltage drops to while cranking over the engine.
IF the voltage drops below below 12V while cranking the engine or IF the voltage after a couple resting hours drops to below 12.2V; then the battery either has a bad cell or there is a large parasitic draw on the battery from an accessory or ground.
You can test for amp draw by removing the ground cable clamp from the battery, placing a VOM leads between the battery terminal and cable clamp, place the VOM mode selector on mA and measure the Draw.
IIRC the amp draw from the radio and ECU shouldn't be much more than 35 mA.