Instead of wiring into a home’s breaker box, the Backup by BioLite home backup power solution relies on thin battery panels that can fit behind appliances to keep them running for days at a time. It’s built around two 1.5kWh lithium iron phosphate (LiFePO4, or LFP) batteries, the Backup Core and Backup Extend. Like any uninterruptible power supply, the Backup Core keeps itself perpetually charged from a wall outlet while power is available, then switches to keep whatever’s plugged into…