Raion Power 6V 4.5Ah Battery For KSTAR 3-FM-4 - 12 Pack 858385006366 | eBay
3-FM-4.5 UPS Battery 4.5Ah - Western Electrical Co.,Limited
Mighty Max Battery 6V 4.5AH SLA Multipurpose Rechargeable Battery Rechargeable Sealed Lead Acid 645 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
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Amazon.com: BatteryGuy HK-3FM-4-5 Replacement 6V 4.5Ah SLA Battery Brand Equivalent (Rechargeable) - Qty of 1 : Health & Household