Hitec X4 AC Pro AC/DC Four Port Multicharger problem

You might try changing setting on delta peak, but in general these chargers aren't designed for these big modules and each charger I have seems to have a different overcharge capacity limit shut down problem. Some are better than others, but in general we're using a row boat for a job that would be way easier if we had a tug boat.

And while some rebuilders are here trust the capacity measurements of these inexpensive chargers, I haven't trusted them ever, they don't seem reliable at all. In my opinion accurately measuring capacity of modules with these cheap devices is a waste of time. My rebuilder buddy who has $30K in lab grade testing gear can do it prcisely, but I don't think these chargers can because they were designed for much smaller modules than we're using them for.

What's more, I'm told NiMH charge at only ~70% efficiency so 30% of the 7200 that you sent to the module was lost as heat. What's more charging a module all the way up from a low voltage in one setting heats them up too much even with a cooling fan, so I do it in stages.

Also discharging with the little 10w resistors inside the chargers is painfully slow so I use 12v 20w and 12v 50w halogen bulbs to speed things up a bit.

 

it doesn't take long to get below 6v with a 50w bulb... Of course if you want to do it correctly the science says discharging at a 1/4 amp is best... I discharge first round to 5v, second round to 3v and third round to 1v... But if I had $30K in lab grade testing gear I could have the same results by only going down to 6v.

As for the Hitec RCD 44254, seems like a lot of power in a small package that will get too hot and not last very long, but maybe the fan works well?

Also there's always a bit of deception with dual and quad chargers. It says in specs: "Ac power distribution, channels A & C: 100 watts total, channels B & C: 100 watts total" but it doesn't anywhere say that it can do 50w on all four channels at the same time. I've seen this deception many times, but have not studied these devices well enough to know if I'm being overly skeptical or not.

 

I charge at 4.3amps for the old SkyRC chargers and 3.9amps for the new ones with more wattage and faster processor. There's also been plenty of people on here who haven't had any issues with 5amp charges, but that seems excessive to me. Here's what my rig currently looks like:

 

Yes... Current rig can discharge 7 modules while also charging 7 modules at the same time... So just 4 rounds of each of that and the pack has one round of reconditioning done. It's way faster, but not compared to my buddy with $30K in equipment. He can process more than 80 modules at the same time and actually get reliable data from each module on his computer while doing it.

 

Yep, the premature over-capacity shut down is so consistent I use it to keep track of how much more charging to go. Also a good opportunity to let everything cool down before charging more.