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I just ordered a couple tenergy 2200mah 20c batterys, which I plan on running them parallel. plan on building a mod when I get everything together....... btw will be using the dna 30 board
Can u recommend a fuse for each of these batterys? having trouble figuring this part out...thanks for the help!!
and btw cool mod you built!!
jay
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assuming this could get me the full 30 watts if needed, altho I don't see myself going that high, I should be gtg.
u have a link to the correct ones? also will the dna board let me know when its time to charge the batterys before they go below the recommended discharge?
There are several ways to go about fusing. The DNA 30 should have a 12A hold current input fuse.
Using two parallel batteries: Each battery should be fused separately.
You can use two 6A hold current fuses, one for each battery. Or four fuses, two 3A fuses in parallel for each battery.
If the internal resistance of the fuse is low than go with the 6A in each battery. Paralleling will half the resistance and double the amperage.
If you are using only a single battery then the fuse hold amp rating should be 12A or two 6A in parallel
Using two parallel batteries: Each battery should be fused separately.
You can use two 6A hold current fuses, one for each battery. Or four fuses, two 3A fuses in parallel for each battery.
If the internal resistance of the fuse is low than go with the 6A in each battery. Paralleling will half the resistance and double the amperage.
If you are using only a single battery then the fuse hold amp rating should be 12A or two 6A in parallel
Hi If im using this "RGEF400"
how many fuse that i need to use if im using 2 x 18650 battery
of course for DNA30
The RGEF-400 is 60mOhm 4A. You can get away with two. One in each battery.
60mOhm is rather high in resistance. One in each batt should give you 30mOhms.
As per our friend CraigHB: "You don't want it to be more than 30m Ohms since it can impact booster performance".
The ones I use are 7mOhms
60mOhm is rather high in resistance. One in each batt should give you 30mOhms.
As per our friend CraigHB: "You don't want it to be more than 30m Ohms since it can impact booster performance".
The ones I use are 7mOhms
n/m - breaktru beat me to it 
mouser doesn't always list the resistance right - the datasheet says 0.021 ~ 0.039 Ohm.
I think I would use 2x in parallel on each batt though for 8A protection for each batt. That's not that much difference from 6A total per batt. With 4A per batt for 8A total there might be inadvertent tripping if running the DNA30 around max current since it allows up to 12A.
mouser doesn't always list the resistance right - the datasheet says 0.021 ~ 0.039 Ohm.
I think I would use 2x in parallel on each batt though for 8A protection for each batt. That's not that much difference from 6A total per batt. With 4A per batt for 8A total there might be inadvertent tripping if running the DNA30 around max current since it allows up to 12A.
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How in the World,,,,do I get my hands on a DNA30D chip! I've been on the Evolv web site every day, about at least 4 times a day, And there never available!!! I e-mailed them and they said to follow them on Twitter??? For the stock update. I don't have a Tweeter account but my son does so he's been tracking them for about a week!!!. No Luck yet, I almost someone would clone them so the availability will increase. Can anyone help?
I feel your pain. I missed the initial sale by like 20 minutes. Pretty heartbreaking. lol. I have sold off a lot of vape gear so that I have enough to buy a handful of DNA 30s at the next release. I cant wait. The 20s got me off mechs. The 30 is gonna be awesome.
n/m - breaktru beat me to it
mouser doesn't always list the resistance right - the datasheet says 0.021 ~ 0.039 Ohm.
I think I would use 2x in parallel on each batt though for 8A protection for each batt. That's not that much difference from 6A total per batt. With 4A per batt for 8A total there might be inadvertent tripping if running the DNA30 around max current since it allows up to 12A.
Im using 2 fuse for each batt.
Direct solder the wire to each battery and wrap with the rubber tape
Using 4 leaded fuses does take up quite a bit of space.
But with using a 4A fuse that has a trip current of only 6.8A, you didn't have too many options. For the DNA30 you want a hold current of 6A per batt when using dual parallel batts, not a trip current of 6A per batt.
The good thing though is that the resistance is now down to around ~5 to 10 mOhms instead of 21 - 39 mOhms.
But with using a 4A fuse that has a trip current of only 6.8A, you didn't have too many options. For the DNA30 you want a hold current of 6A per batt when using dual parallel batts, not a trip current of 6A per batt.
The good thing though is that the resistance is now down to around ~5 to 10 mOhms instead of 21 - 39 mOhms.
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Well I can finally post this now that evolv has the DNA 30D for sale on their web site.
Here is the datasheet --> http://breaktru.com/dna30/dna30.pdf
where can I find this 510 connector...
Well I can finally post this now that evolv has the DNA 30D for sale on their web site.
Here is the datasheet --> http://breaktru.com/dna30/dna30.pdf
Where did you get the enclosure materials ? and those flat batteries? That thing is fantastic!
Sent from my SM-G900R6 using Tapatalk
Thanks Brant.
The enclosure is a Hammond 1455D801
The Li-Po batteries can be found in a hobby shop such as hobbyking.com
I ordered my chip today from Hyperion Vape but had a quick question for those of you with chips already, are the PCB mounted tactile switches removeable with the standard solder wick technique?
I was also going to order some stuff from HobbyKing but read some horrible reviews of shipping and customer service (Fasttech of R/C world?) and went with Horizon Hobby instead. My eyes are still crossed from looking at Mouser and DigiKey for both switches and fuses!
ADDIT: I was going to add the USB charger in my build as well but that board looks almost as large as the DNA board, thanks breakthru for the pic to help me make that decision.
ADDIT EDIT:Found the answer to my question, search function on google worked better than the forum!
I was also going to order some stuff from HobbyKing but read some horrible reviews of shipping and customer service (Fasttech of R/C world?) and went with Horizon Hobby instead. My eyes are still crossed from looking at Mouser and DigiKey for both switches and fuses!
ADDIT: I was going to add the USB charger in my build as well but that board looks almost as large as the DNA board, thanks breakthru for the pic to help me make that decision.
ADDIT EDIT:Found the answer to my question, search function on google worked better than the forum!
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