Method and system to extend CMOS battery life

An information handling system comprising:

• a housing;
• a main board coupled to the housing by a coupling device, the main board including wirelines and having an opening;
• a processor coupled to the main board and operable to execute instructions that process information;
• a memory coupled to the main board and interfaced with the processor, the memory operable to store the instructions and information;
• an embedded controller coupled to the main board and operable to manage application of power at the main board;
• a real time clock (RTC) semiconductor device coupled to the main board and interfaced with the embedded controller, the RTC semiconductor device operable to manage a real time clock when power is absent from the main board;
• and
• a battery coupled to the main board and interfaced with the RTC semiconductor device to power the RTC semiconductor device when power is absent from the main board, the battery having a ground interface through the main board to a first contact at the opening, the RTC semiconductor device having a ground interface through the main board to a second contact at the opening, the first contact discontinuous from the second contact when the coupling device is absent from the opening, the battery ground interface to the RTC semiconductor device ground interface completed by the coupling device inserting through the opening to contact the first and second contacts at the opening.