jkinosh

I have the dynamite Speedpack 1800Mah Ni-MH that came with my sons Torment on the charger right now. I had it set to limit capacity ot 2100 maH and it finished with the message of Capa on the charger, Thunder AC6. Are these packs really that under rated? I just restarted the charge with the capacity cut-off turned off and it put an additional 212 maH into to, for a totla of 2312 maH . Should I just call it charged when it hits the cut-off at 2100? or should I set it higher? Or Lower Don't want to damage the pack. I am charging at 1.8A

What about his lipo, it is a 5000 maH sky lipo 20c 7.2 hardcase, what should I set the cut off at?

Thanks

Jacob

allelectric

I fly all electric.... and I would NEVER overcharge my batteries. And my lipo's always go through a break in period. I am not an expert But I believe you probably damaged that pack....

jkinosh

Not sure if it would have damaged the pack or not, the Charger is a Delta Peak charger, so it should shutoff when it is complete, atleast for NiMh packs

Goldenduff

Agreed charger should shut off. 3.8v per cell for a lipo would be the norm. Again it should stop automatically

guver

My Feedback: (325)

Your pack is probably not over-rated at all. I'd sooner question the accuracy of the charger's current based on the capacity error (or the additional 212 happened during the peak delay at start and as a result is overcharge) In either case the pack is probably very close to the labeled 1800 mah. The charger should do a nearly perfect job of detecting the full mark especially at the 1.8 rate you chose. Keep doing what you're doing with a max capacity of 2400+ set in the NIMH mode. After a few more charges you may see a new better figure to use.

The lipo should be set the same way (start at 5000 mah) and if it reaches cut-off then increase it to result in a fully charged pack. OR you can just turn it off the first time and then you have your magic number, right? If all of your batts rersult in a capacity that is higher than the label then the current is suspect and can be checked with a DVM or clamp meter.

Goldenduff

Just to amend my earlier post a full lipo is 4.8v per cell!

trax de max

4.2 per cell goldenduff

Goldenduff

God dam it! That's what I meant to amend it to! Maybe I shouldn't go to work today!...

trax de max

yea take the rest of the week off, or judging by the weather buy a boat.

Goldenduff

Cheers! I'm in Aberdeenshire so pretty used to it! Where are you?? I'm still looking in to Rex box power supply...

trax de max

Northumberland, never heard of rex power supply, any good

Goldenduff

X box - I really shouldn't be at work! (that was actually a predictive text error)

trax de max

cool, I only seen one modded, theres probably more about now. I'll try and find it for some tips for you. I'm sure i bookmarked it on the PC at home.

Goldenduff

Cheers

Andy qin