Here's the truth about the 977. It charges lipos with a CC routine unlike most cc/cv routines. That's it, the volt reading is something else.

The graphs are a bit shakey , but the first is the CC and the second is a normal cc/cv.

I just got it today and couldnt be happier, runs alot cooler than my 960's did.
Thanks to the cooling fans.
I fully charged all 11 of my batteries one right after the other and it was barley warm.

I don't get it... I look at your signature and you have high dollar stuff but buy one of the cheapest chargers out there????
I have a 989 and it's a POS compared to my Hyperion.

No offense, like I said I just don't get it..... a 501x is like >$500

I plugged in the DC Power-Supply in the wall power outlet without plugging it in the charger. Then I smelled something burning coming from the power supply.
Was that a wrong move?

I replaced the MRC 977 charger and power supply with the Graupner Polaron charging system(EX-1400 Charger and 2012 Power Supply).
It cost a few dollars; but it's a better charger.

The Power Supply that came with the 977 Charger totally smoked-out yesterday.
First the charger and power supply started making clicking noises. So I unplugged then replugged the main power cord from the outlet. Then a fizzing noise and smoke started coming from the power supply.

Is there a better power supply can I use with the MRC 977 Charger? (it's for my kids batteries)