The Layman's Dual Cell Mod (tm) - Page 14

actofgod · #**196** 05-17-2003, 09:15 PM

Good luck MadScott, keep posting your progress.

Lol @ S. King book chelboed

What's next.. spinning in circles ala The Exorcist?

MadScott · #**197** 06-04-2003, 02:39 PM

Just to check back in, I took some time this past weekend and finally got stuff figured out with the peak charger. I ended up putting the tricell in my 27mhz 350z with a 2.8 motor and that thing hauled! Even with my peak charger, I was only able to get about 5 minutes of runtime and about half way through the run, I did notice the diminished turning responsiveness that I've heard reported. I still love it though!

charliebrown · #**198** 06-29-2003, 08:09 PM

Act Of God, What is the formula for finding out the amount of time you need to charge a battery???

actofgod · #**199** 06-30-2003, 10:59 AM

charge time (hours) = batt capacity (mAh) / charge current (mA)

- multiply results by 1.2 to account for charging inefficiencies
- multiply by 60 to convert to minutes
- multiply anything after the decimal point by 60 for seconds

Check pg.2 of this post and look for "Charging FAQ" for more info. Good luck!

charliebrown · #**200** 07-23-2003, 03:04 PM

I just got them. I took the shrink wrap off three cells and installed them, and when I charged....I smelled fried chips for dinner. So now I need a new car. Anyway, nextime, I'll leave the shrink wrap ON! And when I seperated them (superglued) some of the shrink wrap comes off and sticks to another cell. DAMN!!!

actofgod · #**201** 07-23-2003, 05:11 PM

What kind of charging setup do you have? Check some of the troubleshooting posts about battery orientation and insulation. Perhaps it is just a small detail that is being overlooked. It is okay if some of the shrink wrap comes off; you can even remove all of it if you want to. You just have to make sure that the metal on the battery is not touching the bottom of the PCB when it is put back together. Use some clear tape on the underside of the PCB to insulate it.

Good luck!

charliebrown · #**202** 07-23-2003, 05:13 PM

I think that was my problem.....the metal on the cells was touching the pcb....next time I won't remove the heat shrink.

micromatch · #**203** 09-19-2003, 09:55 PM

i did this tri cell one on my peugot 206 bensu clone i just bought today and slapped in a zz purple motor gold spring suspension rare earth magnet and this thing speeds and handles good

P.S. i charge it about 10 mins with a4cell charger

#**204** 09-20-2003, 11:21 AM

so im not getting how this wuite works ..... the 2 battery one will it be faster then then the stock battery and anyways wat does tha battery have to do wif speed.....and if i do the 3 battery one will ma rc not work?????????????and how to do the 3 battery one cuz i dun think its posted on how to do it!!!!!

micromatch · #**205** 10-07-2003, 01:14 AM

cut out thre batterys (make sre you get all the metal connector off that you can and then put 3 together andwrao the wholething in electrical tape except he 2 connectons at each endand theninstall the battery but remember that the small side off the batt is the + side and also remember that the posotie side goesn the passenger side of the car (U.S. passenger side)

charliebrown · #**206** 01-27-2004, 04:10 PM

actofgod, I just did a Layman's Tricell on my ZipZap, and I must say there is a noticeable increase in performance. I'm using this adapter to charge the ZipZap. I cut off the plug that the end of the wires went into, and I spliced the wires, stripped them, and soldered them to the correct positions, as flatlander_14's tutorial said to. Earlier, when I had the first ZipZap that the Tricell worked in, I charged it for 9 minutes or so, because I thought that the adapter would PUMP OUT 300 ma. I did this with my new ZipZap, but the runtime is incredibly small. I decided to leave it on the charger more, and I noticed the runtime get a little longer...but only by 1% or something.

Then I remembered that it was regulated, and it said "up to 300ma" meaning that if necessary, it would pump out 300 ma, not constantly feed 300 ma no matter what. So, I decided that perhaps it wasn't the adapter that was pushing out 300ma, it was the batteries that were sucking 40 ma from it. I decided to leave it on the charger for 40 minutes....and it worked...well a little. After taking it off the charger for 40 minutes, I felt the bottom, and it was nice and warm (like a baby's butt

), so I figured it must be peak charged.

I then tested it with the NX motor and red gears. It was fine, but the runtime was short and it had almost no torque. So I switched to the green gears....more torque and even some higher speed.....but I only had around 3 minutes of runtime before it crapped out.

I'm thinking that it's not the batteries that pull the current, but remember how in ph2t's DIP switch mod, don't turn it off and the battery power leaks....or should I say.....gets sucked into the car? Maybe when the car isn't being used, it's the receivers or crystals (whatever) that are looking for a signal, waiting to receive them, and that takes some power.

Look at it like this: a guard officer will wait out there to stop something from going on, he won't be inside and SPRING into action as soon as someone comes.

Same with the car: It won't magically turn on as soon as the signal is being sent, rather the pcb is using up a little power and looking for a signal.

So, I'm guessing that since the adapter is regulated, the PCB is pulling the power from the adapter, and some of it is trickling into the battery, and that's how it's not acheiving it's full potential.

Correct me if I'm wrong, but I don't think the battery is even reaching a QUARTER of it's full capability when charging, due to the PCB taking power and not the battery.

That's why, as mentioned earlier, try charging the battery direct and not in the car.

Chuckster...

martdaman · #**207** 02-01-2004, 09:47 AM

that is great but this has got so big i just want to know how long do these last ???

Norm · #**208** 02-16-2004, 04:30 AM

Am I doing something wrong.

I'm trying out both the dual and the tri cell, and I'm having problems getting much of a run time. I'm only running 2-3 minutes run time out of it with a 2.2 motor. It seemed like It was lasting longer at first, but I wasn't timing the run-time.

I'm running a 4.5 volt DC adaptor, 600mAh, and running through the calculations, this should take about 4 minutes to charge fully. Am I over or undercharging?

How can I extend the runtime?