EcoFlow DELTA Series Battery Packs Investigation

Migliaccio & Rathod LLP is investigating EcoFlow’s marketing of “Smart Extra Batteries” for the DELTA product line, where consumers report that advertised cross-model compatibility does not function as claimed.

Reported Issues

Consumers purchasing EcoFlow DELTA 2, DELTA 2 Max, DELTA 3, and DELTA 3-series extra battery packs report:

  • Promotional claims suggesting broad compatibility across DELTA models (“seamless ecosystem,” “expand your power with any DELTA battery”)
  • Actual hardware limitations that allow only certain batteries to connect, or only allow one battery at a time
  • Situations where an expensive extra battery cannot be used with a customer’s existing DELTA base unit without adapters or additional equipment
  • Retailers (including Amazon) listing incorrect compatibility charts, leading to stranded or return-denied purchases

Because these battery packs typically cost $400-$1500, mismatched compatibility results in significant consumer losses.

Why Consumers Should Be Concerned

If EcoFlow misrepresented or overstated the compatibility of its battery ecosystem, this may violate:

  • State Unfair & Deceptive Acts and Practices (UDAP) statutes
  • False-advertising laws
  • Implied warranty of fitness for a particular purpose
  • Magnuson-Moss Warranty Act (for product warranty disputes)

Consumers may be entitled to compensation for overpayment, stranded equipment, return costs, and other out-of-pocket losses.

Signs You May Be Affected

  • Purchased an EcoFlow Extra Battery for DELTA 2 / DELTA 2 Max / DELTA 3 / DELTA Pro 3 expecting cross-model compatibility
  • Discovered that the battery does not connect or cannot charge/discharge as advertised
  • Needed additional hardware (hubs, cables, adapters) that were not disclosed
  • Were denied a refund for an incompatible battery
  • Relied on EcoFlow’s or a retailer’s compatibility chart or FAQ that later proved inaccurate

If you experienced these issues, fill out the form below or contact [email protected] or (202) 470-3520.

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