iRobot 4905 Battery | 
| Brand: iRobot
List Price: $69.99
Buy New: $39.99
You Save: $30.00 (43%)
New (7) Refurbished (1) from $39.99
Rating:  32 reviews
Sales Rank: 250
Batteries Included: No
Shipping Weight (lbs): 1.8
Dimensions (in): 7 x 2.3 x 2.3
MPN: 4905
Model: 17373
UPC: 853816173730
EAN: 0844949007061
ASIN: B0015SBAGE
Availability: Usually ships in 1-2 business days
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| Features:
| • | APS battery compatible with all Roomba FloorVac models | | • | Charges in 3 hours with ABS Fast Charger | | • | Provides approximately 120 minutes of run-time | | • | 50 percent greater useful life than original Roomba batteries | | • | Easy to charge and connect |
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| Editorial Reviews:
Product Description
Charges faster and runs 25% longer than standard battery, with a 50% longer life / Compatible with all Roomba models, including the original series roombas.
ROOMBA 4905 Battery Features:
Easy to charge and connect APS battery compatible with all Roomba FloorVac models Charges in 3 hours with ABS Fast Charger Provides approximately 120 minutes of run-time 50 percent greater useful life than original Roomba batteries Nickel metal hybrid battery. Plastic. Imported. 2Wx7Lx2H"
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| Customer Reviews: Read 27 more reviews...
 This Makes Three Batteries July 22, 2008
dalefl (Here)
12 out of 13 found this review helpful
I have now had to order my third battery for this Roomba. Like another poster the first one died within a year. This time it lasted about 1 1/2 years. At $50 a pop that is ridiculous and, after reading complaints here and on other sites, makes me wonder if it is planned that way, a vacuum conspiracy. As funny as that sounds, it is also based on experience. I have given two Roombas for Christmas presents and the same thing happened to them. They both went down before 6 months was up. I have yet to read a review in which the battery lasted more than a year. If this was a car company they would be under Federal investigation. They know they've got you over a barrel and I'd be willing to be that they earn the vast majority of their money through replacement batteries, etc.
Well, since the thing is worthless without it I am forced to buy yet another battery. That's three in less than three years. There's definitely something fishy going on here. How else can you explain the fact that they keep producing defective batteries? As I said, in any other industry this would be enough cause for a recall.
On another note, the vacuum works great when it works. But we are now approaching the point in which we've paid more for the replacement batteries than we did for the entire vacuum package. Not good business and if this battery fails I will not buy another.
needed a battery too soon!! May 18, 2008
Linda
7 out of 8 found this review helpful
I had to buy it - my roomba less than 1 year old battery died suddenly. I was disappoined. Hope this one lasts a little longer. If not, I might as well just buy a new roomba every time, instead of a bunch of batteries. :P
I love my roomba though
Not all ROOMBA problems are (dead) battery related October 27, 2008
Thomas E. Hudson (West Linn, OR USA)
6 out of 6 found this review helpful
I have owned a ROOMBA Discovery for about 3 years and am just now finding it necessary to replace the battery. Sure, I had major problems like many others with short battery life beginning when the unit was about 14 months old.
I did a bit of research and found a discussion group that listed a good "try this before you panic" solution. Reset the ROOMBA and refresh the battery. And it worked! How?
Run the ROOMBA until the unit stops. Let it sit for about 15 minutes and try running it again. Do this until it no longer will start up. Then, remove the battery. Flip it over and hold down the POWER button for 20-25 seconds. Release. Flip back over and insert the battery. (I also took this opportunity to thoroughly clean all of the contacts with a Q-Tip and a little rubbing alcohol - letting it dry completely before putting the battery back in). Finally, I plugged the power supply directly into the ROOMBA (not the docking station) and let it charge for 3 days.
NOTE: It may be necessary to do this 2 or 3 times (for a total of 9 days with no ROOMBA), but that time is cheaper than a replacement battery.
Magic. The battery went back to its 50+ minute running time for another 9-10 months or so. At that time I did the refresh thing again and got back to more that 40 minutes running time.
Finally, after a total of 3 refresh/reset cycles, the battery is just tuckered out and won't go longer than 8 minutes no matter what I do. And that's fine... I've had hundreds of good carpet-cleaning runs with the unit. Now, for about half the iRobot cost, I am ordering a new battery from Amazon and expect years of additional use from my ROOMBA.
So, for those who haven't tried this and find that even a new battery doesn't seem to make their ROOMBA run right, give the above a try. It not only does a refresh on the battery, it also resets the ROOMBA so it can take advantage of the power. Can't guarantee it for everyone, but it sure worked for me.
 Bad battery July 26, 2008
Oleg
5 out of 5 found this review helpful
We got Roomba as a gift 1 1/2 year ago. We used it occasionally, and it worked fine, so we were very surprised when the battery died, shortly after 1 year. Unfortunately, the warranty had expired by then. The company customer service representative told us that we were not using battery properly. WOW! I assume that our relatives - 2 families - also didn't know how to use the battery, since they had exactly the same problem, even before 1 year. It looks like the company found an easy way of making an additional profit. I don't believe they cannot fix the problem - but obviously, it would take more efforts then just to trick customers into paying steep price for the batteries ($60-$70 apiece) all the time.
Good performer, but what happened to the price? August 28, 2008
timepilot (Lawrenceville, NJ United States)
4 out of 5 found this review helpful
These batteries at $49 were a pretty good value. They last for about a year and help your roomba save you time and effort. Considering how much work a roomba actually does on a single charge, it's amazing they last as long as they do.
BUT, $69? Sorry, that's $20 too much. When this battery dies, I'm going to go back to my upright. I hate it when I feel like I'm getting ripped off.
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