eCigarette Forum > Modding
DNA 12 Evolv w/ an MCU
Breaktru:
Soon Evolv will start selling a USB charging module for their DNA.
I received two Micro USB charger boards a couple of days ago from Brandon for testing.
Nice and tiny. I don't have the spec's on it but I am thinking it maybe 500mah.
Here is a size comparison with the two others I have used.
Breaktru:
In the photos above, the red USB charger (500mah) takes 2 hours to charge a single 20C, 1000mah Li-Po.
Using the Evolv DNA charger I pulled the battery off after 5 hours. Red charging light remained lit. The battery started out at 3.4v and after 5 hrs measured 3.8v. Fully charged, this battery usually measures 4.17v
During charging I measured the amperage rate at 0.8uA (micro amps). This is suppose to be a 500mah charger according to the DNA datasheet.
CraigHB:
Sounds like you got a dud.
Breaktru:
Same result with the second charger on Li-Po that Brandon sent.
I thought that maybe these chargers couldn't handle a Li-Po so I discharged an 18350, 1200mah, Ultrafire (blue) to 3.38v and put it on charge monitoring Voltage and amperage.
Charging rate is the same 0.8uA. Voltage slowly increased from 3.43 and slowly climbing. It's on charge now for 1/2hr and has reached 3.65v and still charging at 0.8uA. After 3 1/2 hrs it's at 3.86v.
Breaktru:
Okay, I sent Brandon a PM yesterday and he just replied.
He sent me the wrong chargers.
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