Question edited for 'make model (what it is)'.
Question moved from Optics.
This is your Date Code in the serial number.
06-24-04
June 24, 2004
1,747th unit made.
7 amps 120 volts - that is 840 watts or a bit over 1 horsepower and from that is claimed the (optimistic) performance of 450 cubic feet per minute and an air speed of 260 mph.
I advise a large pinch of salt with those specs as a 12 amp (nearly 2 horsepower) model claims a more reasonable 200 mph and 410 cfm.
I doubt you will find a cordless model to match the performance of a corded type though if one is available it would probably have a short runtime from a fairly large battery.
Replace battery. It has a life. If you failed to remove charger when fully charged, you have shortened the battery life. Battery is available on line from several vendors that will much cheaper than a sears battery.
ignition switch may be bad or a broken or loose wire at the switch. test and replace if needed. be sure when in the start pos. you have 12 volts at the solenoid.
