This approach is advantegous in terms of saving rack space where a PDU does not have to be mounted as well as potential power efficiency gains of having fewer AC DC power conversion steps. The basic premise is to provide a short depth (~250 mm) rack mountable UPS which instead of 230V AC can provide typical low voltages suitable for powering of CCTV cameras, sensors, routers, 802.11 access points, modems, switches, embedded systems (like a Raspberry Pi) and other small devices.
IntroductionThe Secondlife UPS Mark II was envisioned as a successor to the Secondlife UPS Mark I model with the following improvements: It's version 2.0 of a setup that currently powers my home infrastructure rack.ġ.
Tldr A second iteration on the modular DC output UPS using refurbished ('second-life') lithium-ion 18650 cells project.
