I too have a SuperBrain 809. After I had it for a few weeks, it
overheated and actually melted the case (in fairness, it was about 94
degrees that day and I had it under the hood of my car which was very
hot). When the case melted, I could not push the Select button any
longer. I called MRC and they replaced it without question (it did
take a while and I did have to call and 'complain' about the time.. I
was told 3-5 day turnaround and it took a little over 2 weeks),
anyway, while it was being replaced, I ordered two 12VDC fans (1-5/8")
from Mouser Electronics. When the charger came back, I opened the
case and cut out two holes for the fans to sit into and four mounting
holes for each fan. Found the bridge rectifier circuit which puts out
about 17VDC, and wired the fans to that. When the charger is peak
charging (2Amp or 4Amp.. not trickle).. the voltage drops down to
right around 12VDC, otherwise, the fans are running faster than they
are rated, so I did spend a little extra and got Ball Bearing fans. I
added a switch that I can turn the fans on/off (I don't know why I
added it) and drilled a few more holes in the case opposite of the
transformer to draw more cool air around the transformer. With this
configuration, the charge works FLAWLESSLY, and I've charged 8 packs
in a row without any significant heat buildup. NOTE: The fans only
work when the charger is running off of A/C in this setup, but it
wouldn't be hard to wire it so that they would run AC/DC.
>I have one of the Super Brains and have had it since 9/98. I have
>repeatedly charged stick after stick without letting it cool down
>although I wouldn't recommend it. I have had no problems with it. I
>don't put it under the stress of racing but have charged with it many
>times and have forgotten and left sticks hooked to it for a week with
>no noticable harm to it or the battery. It does get extremely hot
>after about 3 sticks in a row and emits a plastic smell which R/C Car
>Action I believe reviewed and not the same smell. It just seems to be
>from the stress of multiple charges.
>It's great for the money and I have not had any problems. I like mine
>but you have to choose for yourself. If you plan to race there may be
>better ones out there plus I don't "think" it will charge the new
>3000mah sticks but someone may know for sure. (How bout it fellows?
>Anyone know for sure?)
>>Ok, I have one last part to choose before I order. The charger is the
>>piece that I find most confusing. There are so many features that I
>>do not understand... probably because I know very little about
>>electronic properties. Anyway...
>>Is the Super Brain a good charger for a beginner. I am getting the
>>following for bashing around.
>>Futaba Magnum JR w/ESC
>>Trinity AmpMax 1400 (couple of 'em)
>>1) What is a peak charger... is it the trickle thing that I see in the
>>2) Do I have to worry about "overcharging" with this charger
>>3) Does the charger do a "charge over a really long time" charge that
>>I have read is good for the battery every once in a while?
>>If anyone has a web site that goes over battery basics, I would