Pro Tech AC/DC Super Charger #702 info??? - RC Groups
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Feb 16, 2005, 12:53 PM
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Bookstar75's Avatar

Pro Tech AC/DC Super Charger #702 info???

HI Guys!!!

I own a Pro Tech Super Charger #702 by Model Craft MFG. (it was my dad's) but I do not know anything about it such as what batteries it will charge, whether it turns off by itself once the battery is charges etc.....

I have posted a couple pictures of it for you to see so you know what I am talking about.

It has a 15 minute timer, a 1 amp fuse, a trickle light indicator, a discharge and charge switch, a 6 cell and 7 cell switch, a D.C. amperes meter, a DC 12v input holes (both positive and negative), a cigarette lighter plug-in, a tamiya plug-in, and negative and positive knobs on the side. Anyone familiar with this charger?

I have no idea how to use it. I know how to plug in my 7.2v 3000Mah batteries to the Tamiya connector but I am unsure how long to charge them, and whether this charger will stop charging once it detects the batteries are fully charged etc....
Here is what I want to know:

What range of Mah batteries can I charge with this charger? i.e., up to 3500mah? How low?

What volts will it charge? I know it charges 7.2 volt batteries, but will it charger smaller or larger like 9.6 or 8.4?

What does the trickle light indicator do? Whats it for?

What is the 15 minute timer used for?

What is the discharge switch used for?

Will the charger detect when the battery is fully charged and stop charging? Is that what the trickle light indicator is for? Will the light turn on or flash or what?

Is there an 800 number I can call to ask more detailed questions about it? Or maybe a website I can go to to learn more about it?
I tried doin g some searches but I cannot find any info on it.

Thank you for your help!!!
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Feb 16, 2005, 01:08 PM
I have no friends
I used to own one of those, in 1988...

First, it's a simple 4 amp charge rate with no peak detection. You simply hook up your battery and turn the timer on.

Based on that, I wouldn't use it. 15 minutes used to be fast enough to fill a 1500mah at 4amps but now the cells are much higher capacity and will take a lot longer. Starting the timer again and again will also not be good as it will lead to overcharging.

As for the trickle, the light comes on when the timer shuts off, there is no real science behind it.
Nov 20, 2010, 06:36 PM
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Slow & Low's Avatar
Bump, I've got one of these too. Can I use it as a 12 V power supply to test circuits in a pinch? I know, I'm not very bright! lol

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