Noob question thread! 2020_Summer

Not mine sadly
To be fair I got it for really cheap on Ali
With delivery in 5 days for £40

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Ordered this delivery today

https://www.amazon.co.uk/gp/product/B07GFBYKGD?ref=ppx_pt2_dt_b_prod_image

Well i paid £43 for ts100, solder, stand, 2.1mm jack to xt60 cable, 1 tip and a power supply.

delivered in…6 days or so

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Wow ok you got a good deal

All the ones with quick delivery for me where way more expensive

Mine was just a tip and the iron

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Wow that’s a really good price
For me it’s like £50 from U.K.

Can’t be bothered returning mine though

Only thing I want there is the power cable

If you have a 6s lipo you could use that. (Remember to not use it fully charged!!)

Obviously lower S counts work too

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Don’t have a limo and don’t really need a soldering iron on the go
So ok with a laptop charger

Got one thing I can use atm but it’s the plug for my bike turbo trainer

Yeah, pretty much, within reason.

Just use a fuse rated for 1.25x to 2.5x the amount of current you’ll charge at. 7.5A is a great fuse to use for 4A charging

I personally use these

7.5A 58V
or
10A 58V

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You should never have to replace it.

But if you do, you’ll be happy seeking one out — because you’ll have a not-junked battery and a not-burnt house.

If you’re in the US, I will send you one for cheap

Basically as a favor :slight_smile:

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Someone posted an email response from Timo saying that DHL screwed him and most of his stuff is still in transit. That was like a week ago.

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That’s very strange. My version of the app doesnt do that. Try increasing the Overvoltage cutoff and see if that allows you to raise the overvoltage release. For example, set overvoltage cutoff to 4.22 and see if that allows you to set the release to 4.17, etc.

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Here’s a list, its a wiki so anyone can add whatever they want. Plus, since this is DIY getting verifiable and accurate data about a lot of this is difficult. So color me skeptical about some of these numbers haha. But here it is.

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Yah you have to set the overvoltage too. It’s weird and feels wrong because sometimes a cell will actually peak at 4.22

Pretty sure I do; I tapped on the ‘polymer normal’ then the check buttons

It does :slightly_smiling_face: (4.169999…) and doesn’t crash the app lol

Would that be too risky to leave the cutoff that high though?

Cutoff should be at 4.25v and release at 4.15v

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I’ll change those settings, thanks!

No, its not really going to hurt anything for your cells to be a few mV above 4.2V for a half second, since as soon as the BMS cuts charging, your cells will equalize below 4.2V.

Really though, pushing to get to 4.2V per cell is not really worth it. Its slightly worse for cell life and is not going to get you any measureable increase in range or top speed, since as soon as you draw current from those cells the voltage will drop. Look at a discharge graph for your cells and you will see how little capacity there actually is in the first .1 or .2 volts.

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