1. What is the power source for the charger? What is it rated to deliver in both volts and amps (or watts)? DC either 36 or 48v power supply. It's definitely overpowered. I think its on the peak end of high output supply's for these chargers. Ill post a pic soon.
2. What are the two batteries you are trying to charge? Chemistry and cell count? super hot shot 2 5000mah ignitor, receiver lipo pack 7.2v 2600mah, 4s lihv 5200. it doesn't matter any of these charged in combination at the same time, either both channels or one of the channels doesn't charge at the amp rate I set for it whether its 1c, 2c or 3c..5c. Its like its compensating having both channels charging.
3. What is the charge rate you are requesting of the charger for each battery? like I said, 1c, 2c, 3c mostly. can be 2.6a and 5.2a, or 5a and 12a simultaneous. In this case it wouldnt charge 12a. maybe it would hit 8a or 7a, then maybe hit 10.5a for a few seconds then drop down to 7 or 8a. Then it would slowly decline from there until it hit .7a balancing at the end. Also another thing bugging me is it never hits the 1.2 balance current at the end. Its always slow around .7a. Thats the main reason I got this charger! for fast balance current, and it acts like a $100 ac/dc charger with slow balance rate. how come i never see the 1.2a balance current? Even with my new reedy zappers they are always under 1a balance current. That is not the advantage this charger boasts... its really annoying

Keep in mind as the batteries near full charge, the charger changes from CC to CV and the output current begins to drop. This mode is displayed on the main charging screen. Is this maybe what you are witnessing? Yes I think you got it, one of my channels though is always lower through the whole charge from the getco. not just near the end. beyond that, it drops so much under 1a at the end which this charger is rated at 1.2a balance current. why arent i ever getting full balance current?