eco-worthy-us via eBay [ebay.com] has *2-Pack Eco-Worthy 12V 8Ah Lithium LiFePO4 Battery Deep Cycle for UPS*on sale for $49.99 - (20%) off when you apply coupon code LONGWEEKEND on the checkout page... Why This Deal Is Good This offer features free shipping available. We found this through eBay where it has gained traction among deal hunters. Key Highlights • Latest tech at reduced pricing • Compatible with most setups • Warranty likely included Should You Buy? This is a modest discount. Cons