I charge constant voltage as the batteries will determine current at a specific voltage. If I need to leave I simply program my timer to shut off the PS. For example if charging some L-16's at 14.8V I will calculate the absorption time I need and set the timer. Sometimes I just adjust the voltage down to float and finish it the next day.
Occasionally when doing a reforming charge on a Lifeline or Odyssey AGM I will use CC with no voltage limit. Lifeline & Odyssey provided me with specific instructions on how to perform a reforming charge.
For LifePO4 I use it for top or bottom balancing, charging and discharge/capacity testing. Nice thing about the PS is I can parallel a LiFePO4 bank to get them in balance then push the parallel pack votlage to 3.8V and then stop. It makes doing a top balance very, very easy.
I also use them to balance 2V and 6V LA cells for series parallel operation . All batteries not just Li can benefit from being balanced prior to putting them in series.. LA will eventually balance if equalized but I still prefer to balance before putting them into operation.
I also use them for equalizing and can adjust both current and voltage. Once at 15.5V or 16V depending upon brand I then dial the current back to the point where the current is just barely enough to maintian 15.5V or 16.0V. This helps prevent a runaway if something internal were to fail as I only have the current to maintain the voltage at that point in time and current should be falling not going up. I set it so current can't go up but so that it can maintain the chosen voltage limit...
There are sooooo many uses for a benchtop power supply.
Parallel top balancing a 400Ah LiFePO4 pack with Mastech 3050EX...
http://www.pbase.com/mainecruising/image/148361405.jpg
-RC
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