Lead Acid Battery Backup vs LiFePO4 Portable Power Station
Buy a 500Wh LiFePO4 power station. Its $400 for the lead acid setup or $500 for the LiFePO4. The power station will last you more years and will probably be more useful so the extra $100 will be well spent. One other point is that lead acid batteries lose life when sitting discharged, but lithium ion batteries lose life when sitting fully