This is part 2 in my ongoing DIY sports lighting project and details assembling a 24V DC power supply for the battery charger. Part 1 of the project can be found here.
Most of the higher power balance chargers for Lithium Polymer (Lipo) batteries require a separate DC power supply. For our project, we will be using the Revolectrix Power Powerlab 8x2 which can charge at 40 amps per channel. Feeding this beast requires either an expensive (~$300+) 2000 watt power supply, or a bit of DIY modification to some widely available computer server power supplies to adapt them to the task. Being as the overall lighting system cost was already running out of control, I decided to adapt powerful and reliable Hewlett Packard DPS-1200FB server power supplies which are readily available used from $20-$30 each.