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Mod a charger? Lower Amp output?

Posted: Thu Jun 14, 2007 9:12 pm
by Maxximum Attack
I guess this one is for ph2t and those others who are electronically inclined.

I read a while back that the micro-T can be charged using a hobby charger. One that charges at a fraction of an amp. My hobby charger only goes down to 1A. I know resistors are used to dumb down voltage, but is there anything I can install similar to an inline resistor to lower my output amperage?

My charger has a tamiya connection, it also has an extra wire with a corresponding connection so that I can use another connection type without harming the charger. I'd like something to install onto that "bridge" to lower my amps to a propper level to charge my incoming micro-T.

Posted: Thu Jun 14, 2007 9:16 pm
by BilboBaggins
I cheated and bought the Dynamite Prophet Plus LCD. It can charge at .10 amp.

Posted: Thu Jun 14, 2007 9:22 pm
by Maxximum Attack
No cash, got the truck in a trade. :-?

Posted: Fri Jun 15, 2007 4:29 am
by betty.k
a resistor is your best bet.

you'll want a big 5w one too, looks like a white eraser with 2 wires sticking out. it will get hot too, make allowances.

measure the current inline, eg: so that the multimeter is part of the curcuit.

Posted: Fri Jun 15, 2007 9:15 am
by crazydave
betty.k wrote:a resistor is your best bet.

you'll want a big 5w one too, looks like a white eraser with 2 wires sticking out. it will get hot too, make allowances.

measure the current inline, eg: so that the multimeter is part of the curcuit.
Hey Maxx, you still got that MSC that came with your Tamiya car? That should have a couple resistor bars like Betty is talking about.

I remember when I got my first RC way back when, and I didn't have my charger yet. I went over to a buddy's house, that used to race RCs when we were kids and he broke out with this resistor wire to charge it with. It was a really super thin piece of wire, like the kind used to wind a motor's arm, so it created enough resistance to hook my battery directly up to a car battery. Same concept, so I know its feasable.

Posted: Fri Jun 15, 2007 2:54 pm
by Maxximum Attack
I'd have to look for that MSC, I'm pretty sure I trashed that :(. But I do have a small box with stuff in it.

Posted: Sat Jun 16, 2007 3:00 am
by betty.k
good call dave, that resistor would be perfect as it's like 2 or 3 resistors in one.
one wire will be ground and the other 2 or 3 will offer different levels of resistance. so you will have a few current options when charging. :-o