Amazon.com: Synergy Digital Vacuum Cleaner Battery, Compatible with Electrolux Pure PI91 Vacuum Cleaner, (Li-ion, 7.2V, 3400mAh) Ultra High Capacity, Replacement for AEG OSBP72LI Battery : Home & Kitchen
Amazon.com: 3000mAh for Electrolux 10.8V Li-ion battery pack ZB3103 EL2050 vacuum cleaner : Home & Kitchen