https://www.ebay.com/itm/1267155197...customid=a6b9252ad32711efb9e50284e058b3200INT 4-Pack Eco-Worthy 48V 100Ah Bluetooth LiFePO4 Lithium Battery w/ Rack on sale for $3399.99 - $350 off when you apply coupon code FRESHSTART on the checkout page = $3049.99. Shipping is free.