I have an old Roomba that needs new tires...Is there any out there?

expensive part!

new battery for Roomba 780 Google Search

How old s it? Probily needs a new battery or needs cleaning

Advanced Power System (APS) 3000 mAh NiMH Battery. You can buy directly from iRobot (Item Number: 17373) or on Amazon ($20 buck cheaper). Be sure and get the NMh battery and not NiCad . The old one is probably blue and the new one will be yellow. The new model will last almost twice as long. Please rate this answer by checking on the hands below.

Poor or faulty battery. Also, make sure that the gear box is free from debris. If the gear box is clogged, your Roomba will drain its battery.

I had the identical problem. I cleaned the brush but the problem persisted. I then put in a new brush that was provided in the box and the problem vanished. I have since used the cleaning tool on the old brush and will try and reinstall it to see if my cleaning worked. In any case a new brush will do the job.

Tim B

You need to adjust the "Brush Height String" The new battery is a bit heavier than the old ( by 10 ounces if you got the new battery) dis assemble the roomba and you will see a string attached to a screw which allows the brushes to rise and fall with different surfaces. Move the string 1/4 " and re tighten the screw. Good to go!

Battery time! Get a nice new longer life battery on Ebay, or go for the Nicad replacement if you have no carpet and want to save some cash.

Try cleaning the battery contacts with a little rubbing alcohol or contact cleaner on a foam swab, or a bit of paper towel. Take a litle time, it doesn't always dissolve instantly. (Don't use a pink pencil eraser, it would scrub off the plating that prevents corrosion) Clean both contacts on the battery pack and both of the contacts in the Roomba. Make sure the battery is oriented correctly when you put it back in. Also clean the charging base contacts and the corresponding contacts on the Roomba itself.
I'm not sure entirely sure what you're trying to recover - the new battery pack, the old battery pack, or the Roomba itself - but since you can swap parts back and forth, you can clearly isolate the problem. The old battery pack might be rehabilitatted if you have the equipment to recondition it, but if it may not work. The new battery shouldn't have been harmed that easily.

your roomba is thinking that you need to clean the brushes. if too much load it put on your brush motor--the unit will think that something is wrapped around the brush and slowing down the motor. if you have cleaned your brush and are sure that is not the problem; you need to look for anything else that could be slowing down the brush/motor. If this is inconclusive you need to put your roomba into diagnostic mode by following the procedures in the link below http://swiftracer.com/index.php?myPage=RoombaDiagnosticMode.php

If the charger doesn't light up, it's broken.

Call customer support at 1-877-855-8593. Be sure to have the Roomba and charger with you when you call-- you'll need them.