Hyperion 0610i Charger power supply

question about charging with the hyperion 0610i
1st do most people use the auto charge i charged my 7s gp3300s on automatic and when it was done they would burn the skin.
2nd is there a way to tell how much MAH is in a batt without going through the charge. just to check?

other than that this charger is sick compared to my old gws mc2002
thanks for the ps confirmation it seems pretty good so far
just waiting on my 5s1p zippy H before i test it on lipos hurray i made the leap
peace

[BrianG]

If the NiMH cells are too hot after charge, reduce the delta peak value. It is most likely too high in auto mode. Change over to manual mode and set the peak value to something like 5mv/cell as a start. The cells should be warm, but not hot at the end. Excessive heat is not good for NiMHs.

BTW: whatever mAh you put in once the cells start getting hot is going to heat, not the charge. So, if your GP3300 cells take 3100mAh, and get really hot at the end of say 3500mAh, you aren't actually putting in the full 3500, more like 3200-3300.

Since batteries do not have a linear discharge curve where the voltage linearly follows the charge level, you cannot tell from voltage alone. You could get a very rough idea by just the voltage, but that's it.

thanks for the fast response seriously less than five minutes ok i can change the delta peak value

so when i get lipos should i stay away from the automatic charge to avoid the heat?

[BrianG]

Lipos are different and should never get hot during charge. They use a whole different charging profile.

[Sammus]

BrianG - Off topic but I just noticed your new avatar. Where has it been this whole time! maybe now people will stop suggesting fans to you :P

Originally Posted by e-rev project

question about charging with the hyperion 0610i
1st do most people use the auto charge i charged my 7s gp3300s on automatic and when it was done they would burn the skin.
2nd is there a way to tell how much MAH is in a batt without going through the charge. just to check?

other than that this charger is sick compared to my old gws mc2002
thanks for the ps confirmation it seems pretty good so far
just waiting on my 5s1p zippy H before i test it on lipos hurray i made the leap
peace

I run 7cell pacs too with same charger - set of 4000 and a newer set of 4400 Maxamps pacs. I do not use auto - I charge mine at 5amps using 3 -5mv/c peak. Mine are getting to 125-135F when they peak - they are warm, but I can still handle them.

If you get NiMhs hot enough that you can't hold them, they are too hot like BrianG said. You are damaging them with that kind of temp - basically reducing life expectancy. I monitor mine with temp gun, especially toward the end, don't hesitate to pull them off if they are getting too hot. Better a little short on capacity than sacrifice 100's of cycles batt life wise.

[Sammus]

Instead of monitoring them with a temp gun you could get the probe that plugs into the hyperion.. that way you dont have to stand there to monitor them, it will cutoff itself if it gets too hot.

[BrianG]

Originally Posted by Sammus

BrianG - Off topic but I just noticed your new avatar. Where has it been this whole time! maybe now people will stop suggesting fans to you :P

I just snapped the pic when I took my MMM apart. I know, it was a long time coming!

Originally Posted by Sammus

Instead of monitoring them with a temp gun you could get the probe that plugs into the hyperion.. that way you dont have to stand there to monitor them, it will cutoff itself if it gets too hot.

I just got mine and I'm hoping it does not have the horrible lag that the temp probe for the Ice charger has. The hyperion probe should have a better thermal "connection" to a batt and that should help minimize the time lag between real temp and tem the probe indicates. That time lag with the Ice charger would let you overheatl a batt unless you adjusted the limiting probe based temp down by 20 or more degrees. Hope this one is better.