Want to get the most out of your Ultrafire WT-139 charger and be able to charge shorter 3.7v batteries such as the 18350 and the 16340/ICR 123 ?
Rather than using dummy spacers such as a dowel with a bolt thru the center. You can wire the side terminals with simple internal jumpers...
I had the two 04050c's piggybacked and all wired up but getting these results with a single, is it worth it? I personally don't think so.
Thanks for the testing offer. I think I'll test it myself :laugh:
Thanks Robert, No not the MCU it's just there to calculate values.
The battery helps and the 18 gauge wiring and short runs. Didn't help the DNA though.
Hey As, thanks buddy.
I originally had piggybacks but what you see here is a SINGLE ptn04050c.
This is the piggyback I was playing with: Piggybacking 2 PTN04050c boost modules
This mod has a AtMega328p micro-controller with a Nokia cell phone display. It is powered by a 20C Lithium-Polymer battery. The boost circuit is the good ole PTN04050C.
Voltage Range: 3.78v to 6.38v
PARTS:
ATMega328p AVR
Nokia Graphic Display
PTN04050C
20C lithium polymer 3.7 battery
1 amp USB...
It can be done but not going that route.
I'll create a new Thread once I finish squeezing the top cover on. Hope I don't break or short things out doing it. :laugh:
If you want to see it in the making, look here: Boost MCU Nokia Mod
I assume you are talking about the DNA datasheet. It doesn't specifically mention step-up or boost but if you look at page two and look at the input voltage vs the output voltage you can determine that it is.
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