ECO-WORTHY US via Amazon has ECO-WORTHY 3584Wh 12V/280Ah Smart LiFePO4 Battery w/ Bluetooth Monitoring (L13080202071-1) on sale for $399.98 - $32 (8%) off when you apply promo code 4K5POVDR on the checkout page = $367.98. Shipping is free.

Thanks to Staff Member Skillful_Pickle for sharing this deal.

About this product:

• Bluetooth and remote app monitoring to read the battery voltage, current, battery capacity and other important information
• 200A BMS with multiple protections, including low-temperature protection (charging cut-off 19.4 F)
• Supports up to 4 batteries in parallel, providing 1120Ah at 12V ideal for RVs, or 4 in series ideal for 48V solar power systems
• High-strength metal frame, Grade A cells
• 6000-15000 long life cycles & 10-Year life
• 17.8 x 9.37 x 8.7" (63.93 lbs)