Yes, I have robots ;) If your Roomba won’t hold a charge anymore, here’s some help:
First off, contact iRobot. They have excellent support staff and while they can’t bring a dead cell to life over the phone, they’ll certainly help.
They may recommend the 16-hour reset. I think this is essentially telling the electronics to not monitor the charging depth, and perform a deep charge … I’m guessing. To do this:
- Remove the battery
- Press and hold the power button for at least 5 seconds (some will say 15, but iRobot themselves told me 5 for my Scheduler 4260 model)
- Replace the battery, and then charge the robot for at least 16 hours. Some advise to plug the cord directly into the robot versus using the docking station, in case it gets knocked off the dock. Some advise to charge for 3 days, but iRobot told me 16 hours.
- After 16 hours if it’s green and happy, set it to max and let it run until it’s exhausted itself ( heh, like kids ;) and see if that improved the runtime.
If it didn’t improve the runtime (as is my case) , you can return to iRobot for help and they may well issue a new battery.
By the way, that expensive “Advanced” Power Supply in your roomba is basically a set of ni-cad rechargeable c-cells in series, so you can make or repair your own although I can’t be bothered with that and just ordered a brand-new one from All-Battery for a mere 48 bucks with shipping; about half of what iRobot, Amazon, and others charge.
In the meantime, I’ll plug mine back in and let it sit. If I manage to actually resuscitate it or iRobot proffers me a new one, worst case I’ll have spent 48 bucks for a spare battery; not bad at all.