The top offer on the page is the $1000 off voucher for orders over $10,000, which is best if you are about to spend very large sums on EcoFlow power stations, solar panels or multiple items. That code is the page lead and it cannot be used with any other offer. For smaller orders other automatic sale discounts or the 5% promo code will often be better.
Very large orders, over $10,000: Use the $1000 off voucher above. On a $12,000 order, for example, the code takes $1000 off, leaving $11,000, so you save $1000. This is the only offer that reaches a fixed $1000 saving and it cannot be stacked with other discounts.
High value but under $10,000, around $3,200 to $10,000: Compare the 5% off code with the $160 automatic checkout discount. On a $3,500 order the 5% code saves $175 (final $3,325) while the $160 checkout discount saves $160 (final $3,340), so the 5% code leaves the lower total. Note the 5% code is a one use per customer promo and cannot be combined with other discounts, so it will replace the $160 automatic discount if both are codes or if the terms prohibit stacking.
Orders over $3,200 that would have used the $160 sale discount: If you prefer an automatic reduction at checkout, the Prime Day sale $160 off for orders over $3,200 is applied automatically and requires no code. That is useful if you cannot or do not want to use a promo code, or if the 5% code is restricted on specific items.
Orders over $1,500: The Prime Day deal that adds a free 160W solar panel on orders over $1,500 can be a better value than a small percentage saving if you planned to buy a panel anyway. The free panel is applied at checkout automatically during the sale.
Orders over $600: The sale that gives a free 45W solar panel on orders over $600 is applied automatically; choose it if the panel is something you want rather than taking a small percent off.
Single item deals and sale items: If you are buying a marked down product in the Prime Day or Spring Adventure sales (up to 57% or 50% off marked items, or 58% off selected power banks, or 30% off a DELTA Pro 3), use the prices as marked. For a purchase of an item that is already reduced by a sale price, that automatic markdown can beat a flat $50 or a 5% code depending on the original price of the item.
To choose between applicable offers, calculate your cart total with each option and take whichever leaves the lower final price. Remember the $1000 voucher cannot be used with other offers, and the 5% code also disallows combining with other discounts per its terms.