Any of you have a Roomba and a voltmeter handy?

[rideit]

I could use a favor. Wifey said that the Roomba battery died, so before just busting out the Amex, I figured that I would do some diagnostics.

My first reaction was "yay! here is as good excuse to build a new Li Ion battery out of parts from Deal Extreme, and bump it up to 2800 (or more( Ma!"
But first, I want to figure out what is going on.

The charger that plugs into the wall is giving out (close enough) to the correct 22.5v


BUT the Homing/charging dock is giving out a severely low value, and I am not sure why. Curious if this is correct!


Additionally, the battery gave a read of a whole different value:


So, I am thinking something is hinky.

Would any of you be so kind as to check what you are getting?
I'll send you a pre-cbs blonde Tele with metal pickguard for your time.
Promise!

[guroo270]

My penis shriveled when I read voltmeter handy. Sounds terrifying.

[doughboyshredder]

Does the charging dock say what voltage on it's spec label?

Seems to me that the charging dock is jacked, which is why the batteries are low.

http://homesupport.irobot.com/app/an...a_id/999/c/252

I don't know which model you have, but supposedly it has a diagnostic led that flashes a certain number of times indicating what problem you have.

[rideit]

No, nothing listed.
But I plugged the charger straight into the roomba, and will take a reading later tonight (it won't show a voltage without disassembling the Roomba).

I think it might actually be a combination of a roached dock, and the stocker 1800ma's shitting the bed. Maybe as a joint problem.

[Ridgehippy]

rideit,

22.23 and 2.814 volts. No problems with this Roomba.

I had batteries go out on the older models, but this newer one has lasted for a while.

[iceman]

Well since that's answered, I've been wondering this morning what happens to zombies when it's really cold out. Like, what would a Boston-Area zombie be doing right now? Could you just go around and stack them in the back of your truck like cordwood?

[doughboyshredder]

I bet the dock puts out higher voltage when roomba is connected. Cause 2.8 volts wouldn't charge anything.

[bfree]

Cell phones charge in the neighborhood of 2-5 V, but agreed that it would be insufficient for something as big as a roomba.

[jfost]

I would have thought previously that ownership of a roomba AND a voltmeter were mutually exclusive, but it would seem that I stand corrected.

[rideit]

Just because wifey bought a Roomba doesn't mean we don't have three different wet/dry shop vacs!

[jfost]

Just because wifey bought a Roomba doesn't mean we don't have three different wet/dry shop vacs!

ahhh, by marriage! I KNEW it!!!

[bagtagley]

Well since that's answered, I've been wondering this morning what happens to zombies when it's really cold out. Like, what would a Boston-Area zombie be doing right now? Could you just go around and stack them in the back of your truck like cordwood?

"World War Z" covers this nicely...the book, not sure about the movie.

[TWINS]

rideit,

22.23 and 2.814 volts. No problems with this Roomba.

I had batteries go out on the older models, but this newer one has lasted for a while.

Same with me.
If anyone is looking for Roomba info go here..
http://www.robotreviews.com/chat/vie...39fb4c383404bd
Just like TGR without the Padded Room,heh...

[rideit]

Yeah, that's the first thing that came up on teh googles. A dude did a 5000ma 'upgrade', but apparently it was a fail over time.
I am planning on doing a 12 cell replacement with 2800 ma panda sonics if I can score real ones for a fair price on Deal Extreme. I think I will use it as an excuse to get a proper variable voltage smart charger as well for other projects.