ORIGINAL: theradioflyer
Hey All! For those thinking Slo-max, I ran mine again today for aprox 5 min in short 1.5 to 2 min hopps. I found that the temp of the case was 160 degrees, not to bad I think
I looked very closely at my burnt Slo-max and found that the front bushing was wallard out. I suggest oiling both bushing as the RPM is really increased. The tail temp was 94 degrees. I noticed that my 910 was a little warm but not to bad. I have a current big problem with a 910 that has a cell that is .1 volts out of balance. I heard that this is really bad so it is out side in my charcoal grill. I'm not sure what happened to this batt, I've treated them all well and taken all precautions. I guess it is now it's time, I have at least 50 flights on it and it is a year and a half old. Really thinking about a better charging system, I just don't have a clue about what I should get.
God Bless You All!
Jay
Jay, What TX are you using with your cpp?
As far as you charger situation. I use a TP charger and balancer. Very simple and very effective.
.1v is not very far out of balance. My eflite packs often are much more out of balance from one discharge. My thunder power balancer manual states that it is OK to begin charging with the balancer attached if the imbalance is under .2v If it is over .2v then they say to balance completely before charging.
Also there is a very cheap universal balancer that most folks use called a "blinky".... google it and I'm sure you find a dozen place to buy one.
As far as safety goes you only run a risk of having problems if when fully charged the highest voltage cell is not too high (4v-4.2v) and when discharged the weakest cell is not too low (3.2v-3v)
If your cells become too far out of balance the charger can over charge that one cell. If the charger cuts of at 12v the cells s/b c1=4v c2=4v c3=4v ; a bad situation would be c1=3.7v c2=3.7v c3=4.6v
and in the alternate maner if when discharged one cell was very low then you could have c1=3.4v c2=3.4v c3=2.7. The pack would read 9.5v. A safe discharge if things were balanced but 2.7v=bad.