I just bought one of those really small radio-controlled toy cars (sooo cool ) and i can't figure the power source out... As it has a loading time of 80s and a run-time of 3min i thought it was a capacitor-thingy. But as i have used it a few times i found the run-time getting shorter. So my curiosity got the better of me - i opened it... To my surprise i couldn't find either a battery or a cap. (there is a 16v 100uf one) Just a really small pcb and tiny motors. The motors are fitted inside welded plastic so something could be hiding in there but i don't think so... Any thoughts?
I have the cheap rip-offs of the zip zaps and they use a super capacitor. They have a high internal resistance, but they store a lot of power, and can charge quickly, perfect for these.
Pics would help, wouldn't they. Unfortunatley i get a "illegal port command" from my webspace... Any ideas where i could host some images? Yeah, i thought there would be some bigass caps in there but i don't see any cylindrical or the almost flat type. I have cheched the current it uses while loading. At 4V it is 1.2A witch only drops about .3A (or was it .03...?) after about 80s, when it stops loading. There is no voltage checking going on, just a timer.
In series. I broke open the belly of the beast, and got dissapointed. I found a 100mah 1.2v NiMH battery. 1A isn't all that good for the battery, right? How about the 4v, thats no good either. I might mention that the charger is powered with batteries, new ones, didn't know if that is a given for these things...
In series is what you want, no needed. Not sure what to say might be the cause of the shorter run time, could be battery voltage changing in the charger, deterioration of the battery, temperature affecting the chargers timer...
