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Tenergy 14.4V 3800mAh NiMH Battery Pack for IRobot Vacuum Cleaner 400 series such as Roomba 4905 --New!! A Screwdriver included |
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| Worth the effort and $$$ |
| Thanks to those who have shared their know-how. I followed the posted instructions to replace the APS battery with the Tenergy 14.4V 3800mAh NiMH battery pack for my Roomba Scheduler during the holiday break (took me 3 hours from start to finish) and ever since it runs like a charm - I mean it cleans up 4 rooms and still has some juice left. |
| Jan 06, 2009 |
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| No legs on this battery |
| After only 4 months of steady use the cleaning cycle duration supported by the battery can be measured in seconds. In contrast, the original battery lasted about 1 year under a load of 4-5 cleaning cycles per week. Even at twice the price, the authentic Roomba battery is a better buy. |
| Jan 01, 2009 |
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| THey do not last like the ones from IRobot |
| I purchased this kit last August and it is now December. In a short 4 months my roomba is already showing signs of a dying battery so I will have to purchase another. I run my roomba about 4-5 times per week- there is no way the battery should be failing so soon. With batteries from IRobot they would last nearly a year before I had to replace them. The IRobot battery is about twice the cost of this kit, but if it only lasts 4 months then you will have to buy three kits per year. Even though the web site says this company is based in CA, my guess is that the batteries are manufactured in China. Like all the other batteries and electronic OEM stuff from China that I have purchased - it is not up to quality and does not last. |
| Dec 16, 2008 |
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| Works wonder, but like everyone said opening the APS case is difficult. |
It doesn't come with any instruction manual at all, but I for one propably think the same as the seller of this item. If you even had the thought to replace the battery inside the APS unit, you probably had all the knowledge to do so without any instruction manual.
Wires are clearly color coded, so its impossible to miss the positive/negative/ground.
They protect the end of each wire properly, its a good thing to know for some people out there that short circuiting 12 cells (14,4V) that can transmit around 40A WILL cause Sparks!
Regarding myself, I'm very experienced in handling various kind of battery, especially in RC vehicle Batteries, that is why I decided to replace my own Roomba APS battery.
YES, opening the APS is super difficult, took me good 2.5 hours to opened it with eXacto knife, hammer and flat screw driver.
The reason I give this 4 star is the difficulty on installing the battery inside the APS not OPENING the APS case.
The wired that comes with my battery is making the entire battery a bit taller that it should be, a bit modification with the wire arrangement works wonder and shortening the end wire significantly is also required.
Soldering and isolating each positive and negative contacts seperately is highly recommended, like I said above this batteries can deliver 40Amps at 14.4Volts, enough to cause fire if short circuited and most likely will burn your hand.
Overall the entire process worth the trouble, if you don't think you can get the APS opened, get the APS shell somewhere else, look on froogle. It probably only cost you around 15$.
My Roomba is now back to its tip top shape and performed like new :) |
| Dec 09, 2008 |
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| A waste of time and money |
| The product arrived as specified, but I should have read the other reviews first. I was expecting a quick and easy replacement procedure. The top of the original Roomba battery case is not just tacked on with glue, it is bonded. I've tried prying it up with various tools, but it appears at this point I'm going to have get out the old Dremel and saw through where the seam should be. Who knows if the battery will slide back into the Roomba insert after all this or that I don't rupture the old batteries in the process? I don't have time for this or to mess with a return. The seller should have given a warning about this issue in the product description. I wish I had just bitten the bullet and bought an entire replacement battery. |
| Dec 07, 2008 |
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