MIGHTY MAX BATTERY 12-Volt 21 Ah 350 CCA Rechargeable Sealed Lead Acid (SLA) Powersport Battery YTX24HL-BS - The Home Depot
Amazon.com: Chrome Battery 12V 21AH SLA Rechargeable Replacement Battery for UPS Back Up and More: 7.15 x 6.59 x 3.03, Nut and Bolt Terminal : Health & Household
Amazon.com: Mighty Max Battery YTX24HL-BSGEL - 12V 21AH 350CCA - Gel Battery + 12V 4Amp Charger : Automotive