When its 3am, and you have to take more pain medication because the surgeons wont operate on your crushed S1 nerves because they want you off blood thinners first.  You want to go check the mail with the golfcart, but the batteries are to weak, and the 36volt charger has failed.  Hopefully the UPS will leave the new charger by the front door. To make it easier.  Down to the last bit of novalog insulin, and waiting to see if BCBS approves another vial and the VGO pumps for another month of being alive, but not actually living it.