Battery pack is a good idea. I have a UPS that is just about dead (~1 minute of backup, but I keep it for spikes and drops). I thought it would be great if the

Battery pack is a good idea. I have a UPS that is just about dead (~1 minute of backup, but I keep it for spikes and drops). I thought it would be great if the PSU had a built-in UPS. The space between the PSU and drive bay would be a perfect spot, no need for the heavy switching hardware since the PSU can deliver the 12 or 13.6 volts needed for the battery to charge.