Review on Upgraded Exmate Essential Signature Replacement Battery for Improved Performance by Aaron Villanueva

I am very disappointed in these Exmate Neato 7.2V 4500mAh replacement batteries. I bought it on 01/28/20, expecting a long term. Today is 4/18/20 and they only last 10-15 minutes on a single charge. They never lasted more than 30 minutes on a single charge when new. Old batteries that were 2 years old lasted just as long as ones that were only 3 months old. There is no guarantee in the ad.