🖼 Reply to “Pictures and nothing else” thread_2020_summer

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14694

This is what ginger children do

7 Likes
14695

He still asks about Papa Bret

14696

12S is not 43.2V, that’s ebike jive.

12S is 50.4V.

1 Like
14697

That’s nominal voltage. 3,6V per cell.
Every commercial pack is labeled this way :wink:

2 Likes
14698

If you were selling this to an ebike company then maybe, but cmon, that’s stupid.

5 Likes
14699

Very nice build, the braid looks well done.

What did you use to join the positive cables here?

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3 Likes
14700

No it’s not. It’s literally the standard for every commercial battery available. Look on any lipo you can buy. Look at powertools. The nominal voltage is nice to calculate capacity too. Why go with full voltage. It’s just stupid that eskate goes against the norm.

2 Likes
14701

Those are dual 100A fuses :slight_smile:

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6 Likes
14702

Because nominal voltage isn’t enough information for us to safely pair the right parts and configure them appropriately. A controller that can handle 45V but not 50V shouldn’t be used on a 12s battery even though the 12s pack is 44.4v nominal voltage.

Just because “everyone else does it” doesn’t mean it’s correct or intelligent.

2 Likes
14703

Also nominal voltage varies between 3.6V and 3.7V, which only adds to the confusion. My 6S Tattus for example are labeled as 22.2V, or 3.7V nominal. Similarly my Turnigy 3S is labeled 11.1V. Both are fully charged at 4.2V however.

6 Likes
14704

Nominal makes the most sense and you getting roasted for it haha. Maybe make a disclaimer stating it’s nominal voltage and add another line stating the full voltage for the people that don’t do their research.

7 Likes
14705

Nominal voltage for Li-Ion is 3.6V

Nominal voltage for Li-Po is 3.7V

2 Likes
14706

Plus they’re both the same chemistry, just different form factors/internal layout. It doesn’t make sense that they’re different in nominal voltage when they should behave the same.

14707

Every battery I ever bought uses nominal voltage. E bikes, E scooter, Drones. If you now its li ion and know the nominal voltage you also know the maximum voltage.

The Maximum charge value is somewhat arbitrary anyway. Many devices never charge to the full 4.20V per cell anyway because its not good for cell health. Depending on you Applikation you could also use 4,25V or 4,1V as you maximum voltage.

Labeling you pack 50,4V is dangerous because that’s the nominal voltage of a 14s Battery everywhere else.

1 Like
14708

using the lower nominal voltage instead of the real voltage is as dumb as relying on only C ratings.

14709

Well then tell that to the whole battery Industry. There is so additional information you get from labeling your battery maximum voltage instead of nominal voltage. it only makes calculating Wh harder.

4 Likes
14710

There are entire industries existing for over a hundred years that use non renewable energy sources that pollute the planet in vast amounts. That is the “norm” for mode of transportation. Doesn’t make it right.

Whether you are right or wrong about nominal vs maximum battery voltages, using the “norm” as an argument makes you look like a lemming (aka idiot).

3 Likes
14711

Well he at least has an argument. What’s your argument why full Voltage would be better?
If there is a good reason to go against a norm fine do it. But if it doesn’t change anything except add confusion then you wanting to change it is stupid.

2 Likes
14712

only sheeple use nominal voltage. big brains use the true voltage.

14713

We are talking about renewable energy industries standards though aka the norm. You’re argument doesn’t make sense.

2 Likes