Need Help With my Charger mrc977
Ok i got all these new packs from promatch today,New charger from mrc 977 superbrain.I wanted to put a charge on the new packs so they will be ready for xmas for my son.The 977 will only charge them for about 30min and will then stop.The packs are not even getting warm.They say 9.88v is what they read when they stop.
I had my settings set at 4.0amp 30mv
Now well still had a 959 super brain so i tried it and it charged the packs to 10.88 v
So am im dumb and dont know how to operate this 977 or is the charger junk?
I placed a order for a DuraTrax Onyx 240 today should be here next week.I hate to not use the 977 but if im not setting it up right i would like to know.I just bought 2 sets of promatch 5000 and a set of 4600 hump packs for his stampede vxl.I need the dual charger for the summit what should i do?
Back in the day the 977 was known to false peak, especially on new batteries. Its behavior might improve with a few cycles of the batteries. But you should also change the delta peak (and happily it looks like the 30mv is for the whole pack and not for each cell) to 4mv per cell per promatch's instructions. You might try lowering the charge rate too and see if that assists the 977 to detect the peak better.
Am i misunderstanding the mv i should be set at?I thought it was 4mv per cell which was 28mv since it was a 7 cell pack.So should i be set at 30 mv or 4mv .I thought since im charging the whole pack it should be 30mv or does the charger see it per cell and not as a pack?The 959 charged the pack to 10.88v and seems fine.I guess it really does not matter since i already bought a onyx 240 that comes in next week.let me know what you think
Thanks for the help ksb
Ah, I assumed 6-cells because I wasn't paying close enough attention to the voltages. My apologies. 4.286 mv per cell should be okay. It won't go to 28mv for the pack? Did you program it for 7-cells or let it "figure it out" for itself?
Again, once the batteries have a couple cycles on them, try the ole 977 again.
i only get the option og 25mv or 30 mv it goes in 5mv increments
well sad to say but i opened the new duratrax 240 and it does not power up at all.So now i have 2 chargers that dont work.So im sending both in for warrenty since they are new.I did get to run the summit some this weekend for the first time its great!