iRobot Scooba experience

[XxDrAg0nxX]

xxdragonxx

Irobot need 22V DC supply but u give 12V DC only?
Yes difference in 1Amp do not make any difference. But is a big difference if you compare 12V 1000mA with 22V 1250mA. If you tell me you are going to use 21V 1500mA adapter maybe it will work. Now you are using your robot to charge the 12v adapter. Very soon your battery will spoilt and your adapter catch fire. I believe you have little or no knowledge with electric. I suggest you better use the 220-110 AC transformer and not to try anything else you gona waste your money buying this robot.

I dunno thats why ask mah....

 

[blurrblurr]

The frequency is for AC input. It will not affect the robot since output is DC and if requirement is the same but may spoilt the adapter depending on the way the circuit is design.

 

[blurrblurr]

Ya but you did not ask before you do it...

 

[XxDrAg0nxX]

getting more chim.

IF i am not wrong that frequency is how fast the alternating current switches or something...

 

[XxDrAg0nxX]

Ya but you did not ask before you do it...

I did ask first... then backside itchy go and try

 

[blurrblurr]

Please lo this thread is soooooo long and there is no such thread suggest to use a 12V adapter right? Why you go and be the first one? though tell you to get yourself a 240 - 110 transformer to test before doing anything?
And I think the wiseone had warn you not to do it.

 

[XxDrAg0nxX]

Roomba Battery replacement - update

Sep 3rd, 2007 by Dave |

These batteries freakin rock! You can get them at Batteryspace
and even though they are about the same price, they last WAY longer than the standard battery pack. The only tough part was the fact that the stupid battery casing is glued shut. If you do this however, I would actually purchase the triangle screwdriver that batteryspace sells. Making one yourself would require a dremmel and a spare metal rod thing, such as a crappy screwdriver, alan wrench, etc. I used an IKEA alan wrench that I cut down to the correct shape, but i happen to have a dremmel. If you don’t have a dremmel, buy the triangle driver.
So the results are that my roomba now kicks ass. With the original battery pack it ran for maybe 2 hours if lucky. Now, this thing runs for 4+. The replacement was pretty easy, just a little bit of “forcing”, but nothing major. Cracked the case, but glued that back together. It does take a lot longer to charge up, but it also runs a lot longer, so its all good.
If you have a roomba and it is starting to not quite have the spunk you remember from when you bought it, I suggest doing this “upgrade” of the battery pack.

http://www.braindonkey.com/2007/09/03/roomba-battery-replacement-update/

 

[molecule]

Li-Ion battery is a good choice but for the price quoted, believe u r only getting the 2550mAh version. One word of caution, the 2550mAh is very marginal, meaning it can cover 2 full RUNS but barely so. What happens when the battery is worn down is that u'll be getting less than 2 full runs from it.

it's a risk I am taking. I'm not sure how it will perform in the long run.

 

[molecule]

no wonder you are selling away all your batteries lol!

no lah, still using original irobot batteries. Backside itchy want to try out these li-ion batteries see if they are better. In the long run also need to replace batteries anyway.

 

[sAxman_Returns]

http://www.braindonkey.com/2007/09/03/roomba-battery-replacement-update/

aiya, haosiao one. if you have a charging base and it knows how to go back itself and charge, why bother about additional battery?

 

[XxDrAg0nxX]

aiya, haosiao one. if you have a charging base and it knows how to go back itself and charge, why bother about additional battery?

No no, not say additional, for those who say their battery spoil one can easily go sim lim tower there go replace...

 

[XxDrAg0nxX]

haha with this battery can confirm the polarity....

Go and charge with my charger first while waiting for the transformer

HEhehehehehe

 

[XxDrAg0nxX]

The voltage output keep going up wor...

From start 14.4v... then 16v, now 16.9v.....

I wonder if the iRobot charger itself does that voltage increase thing... hmm....

 

[thewiseone]

I can tell u how its performing in the long run as i'm speaking from experience. Hence, if u r using it for 2 runs, get the 3xxx mAh Li-Ion. The 2550mAh will not give u 2 full runs past 5 months into usage.

it's a risk I am taking. I'm not sure how it will perform in the long run.

 

[hansolo76sg]

saxman mind sharing how much u got your 5th gen roomba for? from ebay right?

USD26 is cheap indeed. never kena tax or duty?

5th generation got much better indicator, haven't tried mine, just received it from CGW, took 1 whole week to delivery....but cheap cheap nia...expecting to see only USD26 freight.

Anyway, Voltage is important, you need to have sufficient voltage but not higher voltage to make your applicant works properly. Voltage too low a bit boh luk like that....later your battery also boh luk then you know......

Current supply can be bigger, the device will only draw whatever is enough for it.

anyway, first charge 16hr right?

 

[XxDrAg0nxX]

Does anyone know the capacity of the default standard irobot battery?

My charger is indicating 2570mah ?

Cannot be so low right?

 

[jc777]

Hi,

I actually bought a variable AC-DC adaptor with the right connector. Brand is NewStar. It supplies 6V,9V,12V,18V,19.5V,22V up to 3.5A and can adjust the polarity. It cost about 50 bucks.

I set the setting to 22VDAC and with the correct polarity and plugged it into my brand new Roomba 560. It blinked for 3 seconds and give "Charging Error 2".

Did some search on the web and found that this Roomba has program its charging circuit such that we can't just use an ordinary AC-DC adaptor. What happened is, as my new Roomba was not fully charged (brand new mar), the voltage of the battery is quite low (about 14.5V according to what I read on the web), putting in a 22V charging current will cause "Charging Error 2". So I have to switch my output to 18V and it will charge alright. After about 30 minutes, when the battery is sufficiently charged (I guess it's about ~17V), I can slowly switch to 20V, and no charging error, and another hour later I can switch to 22V without anycharging error.

The next day, I let the roomba sweep my house for 1 round, for about 40 minutes. Then i press dock for it to go back, it now shows "Charging Error 2" again. I think this is again due to the supplied current is 22VAC and the battery has dropped beyond 18V. So I switched the supplied voltage back to 18VAC again and there the cycle repeats.

From what I observed, it seems that roomba actually monitor the differences between the supplied and the battery voltage and will give error if the gap is too big.

So now the newstart AC-DC adaptor is being used for my notebook and I bought another 135W Newstar convertor to use with it.

are you the one with a friend that send back roomba from USA using USPS? how much is USPS charging?

 

[mingkiat]

The voltage output keep going up wor...

From start 14.4v... then 16v, now 16.9v.....

I wonder if the iRobot charger itself does that voltage increase thing... hmm....

yes, I think at least the new one does. That's why if we get a 22V adaptor it won't work cos it'll consistantly output 22V right from the beginning: Even when the battery is low at 14V.

For computation of power, you can use this formulat

Power (W) = Current (A) x Voltage (V)

 

[mingkiat]

are you the one with a friend that send back roomba from USA using USPS? how much is USPS charging?

yah, my cousine shipped to me using USPS express. $84 from California.

Quite expensive but sent on Friday afternoon I received Monday afternoon. damn fast.

 

[mingkiat]

Wah heng u tell me...

but hor where u see the charging error?

My experience is similar to this guy ..
http://forums.irobot.com/irobothome/board/message?board.id=80&message.id=4780#M4780