Gel battery for Kawasaki ER5 500 (ER500A) maintenance-free, ready to install, ready to install, ready to go, incl. €7.50 deposit : Amazon.de: Automotive
AGM Battery for Kawasaki ER5 ER-5 ER500 1999-2002 / 12V 10Ah CCA 175 / YTX12-BS | eBay
KAWASAKI ER5 (ER500A, B) 97- Gel Upgrade Battery (Replaces YTX12-BS, CTX12-BS) | eBay