Eco-Worthy-US via eBay has select Eco-Worthy LiFePO4 Lithium Iron Phosphate Multi-Purpose Batteries on sale for the prices listed below when you apply Extra 20% Off coupon code SPRINGSAVE20 at checkout. Shipping is free.

Examples (prices after code SPRINGSAVE20):

• 12V
  • 12V 10Ah LiFePO4 Battery $28.55
  • 12V 30Ah LiFePO4 Battery for RV / Boat $63.86
  • 12V 50Ah LiFePO4 Battery $95.99
  • 12V 100Ah LiFePO4 Battery $159.99
  • 2-Pack 12V 50Ah LiFePO4 Batteries $191.99
  • 12V 150Ah LiFePO4 Battery w/ Metal Case $239.99
• 24V
  • 24V 100Ah LiFePO4 Battery $359.99
• 48V
  • 4-Pack 12V 50Ah LiFePO4 Batteries $383.99
• & More