This bundle turns the S5000 into a hardwired home backup system: a licensed electrician connects ten essential circuits through the included 10-circuit manual transfer switch (120V/240V, 50A), so when the grid fails you flip a switch, not drag extension cords through doorways. The battery side delivers 4,500W rated / 8,000W peak with motor-start surge for well pumps and furnace fans, up to 48 hours per charge at 8.8W idle, 30 dB quiet, and UL 9540 & 9540A certification. Professional installation required. | Anker | | SOLIX S5000 (5kWh) Backup Power for Home 4,500 -Watts Portable Power Station with 50A Transfer Switch (5024 Wh Capacity) | Best Buy