Smart-UPS SMT2200I cooling hack: 1500W continuous power!
FFcossag FFcossag
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 Published On Apr 2, 2016

Turning an APC Smart-UPS SMT2200I into a 1500 W continuous sine wave inverter or extended runtime UPS by replacing the original fan with two 120 mm computer fans, and installing a DIY automatic fan controller for dead quiet operation while on-grid.

Fan controller schematic: https://ffseb.wordpress.com/2016/04/0...
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