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    • The Yeti 150 is first gen 12 lb Sealed Lead Acid for $200.
      The Yeti 400 comes in first gen ( 29 lb ) SLA flavor for $450 or 2nd gen (16 lb) Li-Ion for $600. You were comparing the 150 SLA to the 400 Li-Ion. There's a big uptick in the cost of Li-Ion versus SLA energy storage. But the upsides are huge too. Half the weight, for one. Handles full drawdown without killing the battery. No top end limitations, so it handles surge power draws (like refrigerators...power tools...jump starters) way better.