I have been doing some capacity checks using hobby chargers. Please note that these are user experience as I don't have the equipment or training to do technical evaluation.
For Hyperion EOS 0720i NET3-AD
It worked ok with LIxx chemistry, can even cycle once (charge/discharge or discharge/charge). Very convenient for capacity check. You can do capacity check on general limits. You can not do capacity check batteries based on some manufacturer specification. I've seen minimum 2.5V or maximum 4.35V.
This charger needs a lot of improvement for NIxx chemistry. I consider forming charge (.1C for 16 hours) as one basic requirement and this charger can not do it. You can not set it to cycle for IEC capacity check because maximum pause time is only 30 minutes and charge time only 5 hours. Maximum mAh is 9900.
Their software (not firmware) is very good. You can actually connect and control the multiple chargers from a single computer. It saves data by default as it runs for review later. Also data stream appears to have timestamp so if you start software later, graph will show from that point on.
For Bantam BC6DX-II and BC8DP
It worked ok with LIxx chemistry, can not cycle also I was unable check some battery capacity based on its manufacturer specification. I've seen minimum 2.5V or maximum 4.35V.
Works very well with NIxx chemistry. I can set and let it run and it does the rest although I wish the pause time can be longer than 60 minutes. I think I read somewhere that IEC check pause can be from 1 hour to 4 hours.
Bantam software (not firmware) provides the basic information but needs a lot of improvement. It can only run one instance and connect to a single charger. So if you have multiple chargers running, you will need that many computers to log data. Software can not control charger and data is not save automatically. So if your computer crash, all your data for that run is gone. Also data stream appears not to include timestamp so if you start software later, it will log it as if from the start (00:00:01) which is not correct. So I make sure it's running first before starting the charger.
I have some QA concerns about the BC8DP which is currently running capacity check on Tenergy that will be done in about a day. I will know more by then.
For all of the above:
You can set charge/discharge parameters on the charger itself mentioned above. The BC6DX-II and BC8DP have big screens so it's easier for an old guy like me. I use the Hyperion software to manage the 0720i instead of its smaller screen for the same reason (old).
You also have to make the charging cradle/holder for your batteries.
If you can, get the one that supports thermal cut-off. When used, this will turn off charger if certain temperature is reached.
Pay close attention to specification. These chargers can connect AC or DC and usually AC connection have less power.
Good luck on your selection.
