Off-Grid Cabin - Sanpete County
The lead acid battery bank at this cabin had reached the end of its life, and was in dire need of replacement. All sixteen 6V lead acid batteries were removed and replaced with eight Renogy 48V 50Ah lithium iron phosphate batteries. Thanks to the internal BMS and self-heating capabilities in the new LiFePO4 batteries, they are maintenance-free and ready to provide power all year long. The old lead acid batteries needed nearly 20 gallons of distilled water every few months!
To facilitate the battery swap, the Victron Lynx bus bar system was used to easily allow for parallel battery connections, main and branch fuse wiring, and battery monitoring. This bus bar integrates perfectly with the existing Victron inverter/charger, solar charge controller, and remote system monitor.
At a later date, we returned to add some more system upgrades. A second inverter/charger was added to increase the maximum power output to 10,000VA at 120/240V. This also allows the onsite generator to charge that batteries faster and more efficiently. The existing wiring only allowed for one line of the 120/240V generator to be used, resulting in an unbalanced load on the generator while only utilizing half of its maximum output. We ran additional wiring to allow for the generator to operate at 240V, resulting in a more efficient configuration and overall better system.
System Specs
Solar Array: ~1,760W (existing)
Solar Charge Controller: 100A - Victron 150/100 MPPT (existing)
Battery Bank: 19,200Wh - (8) Renogy 48V 50Ah LiFePO4
Bus Bar: 1,000A - (2) Victron Lynx Power In, Lynx Shunt, and Lynx Distributor
Inverter: 10,000VA 120/240V - Victron Quattro 48/5000/70-100/100
System Monitor: Cerbo GX, GX Touch 50







