Amazon.com: Synergy Digital Vacuum Cleaner Battery, Compatible with Electrolux Ergorapido Plus Vacuum Cleaner, (Li-ion, 18V, 2500mAh) Ultra High Capacity, Replacement for Electrolux VBHC7787E Battery : Home & Kitchen
Amazon.com: Replacement Battery for Electrolux AG3005 AG3006 ERGO05 ErgoRapido ZB05ER ZB3004 ZB3004IW ZB3005 ZB3006 14.4V/600mAh : Health & Household
Soldering required For Electrolux Ergorapido 14.4 Volt Battery EL2081 Type A | eBay