DNA 200 Watt
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Not the same chemistry, but do a quick search, and you should understand that answer.
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While they could be done in the same form factor as any lipo-which means the opposite as well, they seem like a backwards approach when looking at the current and Watt hour demands we're talking about.
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While they could be done in the same form factor as any lipo-which means the opposite as well, they seem like a backwards approach when looking at the current and Watt hour demands we're talking about.
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From everything I've read lifepo4s seem like a great option. They are a more rugged battery physically and electrically, have greater cycle life (couple hundred or so more cycles or 3 years longer), can be sored at full charge where as lipos need to be stored at 50%. Plus over all they are a safer, more durable battery. It also has a flatter discharge curve and they dont blow up if overcharge like lipos can.
Lipos have .5 voltage per cell more than lifepo4s sure and are a little lighter but I think there are a lot of benefits.
Lipos have .5 voltage per cell more than lifepo4s sure and are a little lighter but I think there are a lot of benefits.
LiFeP04 cells have a nominal voltage of 3.3v compared to LiPo at 3.7v, and full charge of LifeP04 3.6v and Lipo 4.2v. LiFe batteries have a very flat discharge curve and will hold their voltage very well during discharge and will level off at 3.2v and will hold the 3.2v for the majority of their discharge cycle and then drop off quickly. That's why for a long time they were very popular in cordless power tools. They are commonly referred to as A123 batteries (the company that brought them to market originally). They are quite inexpensive ex., a 1800Mah 3s1P pack for 13.00, but they don't have very many choices in form factor like LiPos and typically are found in a long fairly thin packs. They are hard to find in the sizes that would work well in mods. They can discharge at a typical 30C rate, so are more than enough for vaping purposes and are much more tolerant of over discharging that LiPos (although with a decent regulated mod over discharging is not really a concern). Even when discharged to 2v/cell it will generally not damage the battery. They can typically be charged at a 2C rate while lipos are very commonly rated to a 5C charge rate, although this doesn't matter much either for vaping products since we tend to charge at around 1Amp levels which is well below 1C charge rate. They are also less volatile that LiPos and there are very few cases of thermal runaway with them. They would have to be really abused to enter an unsafe condition. LiFe batteries are most commonly used for durable, long lasting batteries for uses that require moderate power levels and long battery life at a lower voltage level than LiPos since they have a nominal pack voltage of 9.9v in a 3 cell series configuration when compared to an 11.1v nominal pack voltage with a similar configured LiPo and they don't have as great a power density as LiPos. In the RC world, they are commonly used for a long term transmitter or receiver pack, but rarely used for the power source e.g., the electric motor.
So all in all, they are very good technology in batteries, but because of the lack of a wide variety of form factors and a lower voltage level meaning less total run time in an application like ours where the mod will cut off at typically 3.1 to 3.2v/cell they aren't as attractive for our use. But they are certainly a reasonable alternative for someone who just doesn't like LiPos for whatever reason.
So all in all, they are very good technology in batteries, but because of the lack of a wide variety of form factors and a lower voltage level meaning less total run time in an application like ours where the mod will cut off at typically 3.1 to 3.2v/cell they aren't as attractive for our use. But they are certainly a reasonable alternative for someone who just doesn't like LiPos for whatever reason.
Sorry, but even in context the three vtc 4's comment still didn't make sense
the question was between lipos and lifepo4's..... The imr comment threw me for a loopSent with one hand, the other is busy vaping.
12.8V (12V) LiFePO4 Battery Packs
Don't know about reasonable...
Edit-oops, didn't notice the peak voltage...downgrade.
9.6V LiFePO4 Battery Packs
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Yeah, reasonable in that they will work, but LiPos will give much better power delivery overall and in a smaller package, so LiPos are what I intend to use.
And the 12.8v wouldn't work because that would be a 4 cell pack and the DNA200 only has balance charge connector for 3 cell.
in the recent manual they saying they'll release some kind of sled with circuit
for triple li-ions in order to work with that balance charger
for triple li-ions in order to work with that balance charger
Considering temperature is the universal measurement of heat (absolute zero....absence of heat.... Goes up from there....) I'm not sure what you are trying to say. Temperature is directly equal to heat. If you were trying to say temp (as in temp control mods) doesn't ceate heat, well yeah, it's just a measurement, but your post was not clear.
Sent with one hand, the other is busy vaping.
Sent with one hand, the other is busy vaping.
Awesome resource Retird... thanks so much for the link! Even the reference board design files are available there. I am stunned that Evolv is offering the design in several very useable formats, including the full SolidWorks files. Makes me think Evolv is really serious about kickstarting modder development to make this board mainstream as soon as possible. This makes it almost trivial to create a mod using parts of the reference design like the faceplate that is already correctly dimensioned. In fact, I don't even have to wait for the boards I ordered to arrive to design the mod and have it ready for final fitment when the boards get here. Really generous (and smart) of Evolv to offer this.
Energy doesn't equal heat, bud. While heat often creates, or is a byproduct, it is unnecessary in electrical fields. Only parts of high resistance materials, and where current ratings are exceeded, are where you'll find heat.
Heat does equal a temperature...and it also equals issues in many, many cases.
"Maybe you've had too much too fast.."
There's a fully interactive simulation-based tutorial coming for the EScribe software.
Evolv planning to put the download of the EScribe software up some time tomorrow or early Monday.
They should have a manual and the tutorial up in the next day or so.
Evolv planning to put the download of the EScribe software up some time tomorrow or early Monday.
They should have a manual and the tutorial up in the next day or so.
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I think what he's getting at in practical term is you can't set a big log on fire with a match, even though the match temperature is high enough to ignite wood. A match doesn't have enough heat to ignite a log even though it has sufficient temperature. Heat is a measure of work. Temperature is a measure of energy. Sort of different, etc, and why this all started in this thread escapes me lol.
The difference here is that Evolv created an entire mod and is offering the entire mod design to the public. This isn't just the board design. So if you wanted you could make your own complete mod with their reference design.
I've used VirtualBox to flash some phones on my Mac, don't see why this piece of software shouldn't work as well
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