AI-Vacuum Lithium-ion 4400 mAH Battery for Roomba 500, 600,700, 800 Series

Fully compatible with the original charger 4400 mAh capacity compared to the original battery with 3000 mAh (46% longer operating time, varies between models) Patent battery balancing technology for expanded battery life; remains at 80% capacity after 800 charge cycles (vs. 200 cycles of the original battery) Safety and Reliability: Built-in over-charge, over-discharge, over-voltage, over-current, and over-temperature protection circuit No memory effect + Low rate of self-discharge (1% per month)