I have a nice robot vacuum that was used very briefly (cat hated it!), then stored in the original packaging for a couple years. The battery now will not take a charge. New batteries cost $49.99 on-line.
The D8000 lists for $500 at Walmart, but they have not had any in stock. I'm now selling this one for $100.00 firm.
I have NO reason to think that it will not work fine if you buy a new battery, but if there is any problem, I will cheerfully take it back.
If this ad is still up, the item is available; please do not contact me just to ask that.
If you are interested, either call or email (no texts). I usually check my computer a few times each day, or you can often reach me quicker by calling the house phone between 7am and 8pm. (click ‘reply’, then ‘show phone number’)