Amazon.com: RBC7-UPC Replacement Battery for APC Smart-UPS SU1400, SUA1500, SUA750XL, SUA1000XL, SU1400NET, SU1000XLNET - Scroll Down for The Complete List of Compatible Models : Electronics
Amazon.com: APC Smart-UPS 1000VA UPS Battery Backup with Pure Sine Wave Output (SMC1000)(Not sold in Vermont) : Electronics
The 3 Best Uninterruptible Power Supplies (UPS) of 2023 | Reviews by Wirecutter
The 3 Best Uninterruptible Power Supplies (UPS) of 2023 | Reviews by Wirecutter