[PSES] Retrofit kits

Hello Experts, I am trying to understand the requirements around UL Listed retrofit kits intended for installation in the field. The only ones I am aware of are for upgrading light fixtures from older technologies to LED's. There are several flavors such as Self-ballasted LED Type Lamp

[PSES] HV battery

Hi Guys, 1. Per UN 38.3 single cell required to have protective means to be declared as single cell battery…. And protective means such as fixed terminals, solid enclosure, safety vent can be considered as a protective means to declare it as a single cell battery? 2. IEC 62619 tests under sec