The charge state of the battery pack is monitored and stored within registers internal to the battery pack electronics. This may be referred to as a fuel gauge. The charge status LEDs on the battery pack indicate the remaining charge in the following manner:
^DELL PREFERRED ACCOUNT (DPA): Offered to U.S. residents by WebBank, who determines qualifications for and terms of credit. Promotion eligibility varies and is determined by WebBank. Taxes, shipping, and other charges are extra and vary.