Eco-Worthy 12V 100AH LiFePO4 Lithium Battery
This battery allows you to monitor voltage, current, and capacity via your phone. It offers over 10 years of use and 4000+ cycles. It charges to 80% in one hour, significantly faster than lead-acid batteries. The price drops from $189.99 to just $127.49 when you add the code "FRESHSTART" during checkout. Shipping is free.