Tenergy 4905 Replacement Batteries for iRobot Roomba 400 Series Vacuums, Grey

alaTest has collected and analyzed 18 user reviews of Tenergy 4905 Replacement Batteries for iRobot Roomba 400 Series Vacuums, Grey from Amazon.com. The average user rating for this product is 4.4/5, compared to an average user rating of 4.0/5 for other products in the same category on Amazon.com. People really like the usability, whereas there are some mixed opinions about the price.