They seem really slim and high capacity with a good discharge rate too.
Any way you could solder more than one together and throw on a connector to make a cheap and ultra slim battery pack?
Yep. Been done before. If slim is what you need, thatās a pretty decent way to do it.
What would be the configuration for soldering these?
Iām a noob and have heard about series and other stuff, but what would be the best for these?
If you donāt know, you shouldnāt be messing with these for a first project. Thereās real potential for fire if you screw something up, and take it from a semi-veteran, itās really easy to screw stuff like that up.
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This type of cell makes much more sense for eboardsā¦ The cylindrical shape of 18650s wastes a lot of space in between the cellsā¦ We should get on this flat battery thing.
Not my first project, dabbled long ago but it never panned out. Just not the electronic type. I know some people who could help me though, mostly just wondering if theyāre worth the money.
Lol a lot of people already are āon the flat battery thingā. There are reasons cylindrical cells are still popular. See https://www.electric-skateboard.builders/t/should-i-switch-to-lipo-or-just-stick-with-li-ion/80268/13?u=mysticaldork and below.
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Yeah never understood that, and yet I see it everywhere. Flat just seems betterā¦
Will do, thanks! Iām new as well, so I didnāt know about flat batteries.
All things being equal, yes. But all things are not equal. Specifically, the chemistry in recent round batteries is WAY more energy dense (over 3x better) than current RC pouch cells. So even though the packing is worse, they still win by about 2-2.5x.
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@MysticalDork yes, I just read the other thread. I guess weāre just not there yet when it comes to battery technology
The soldering job on those just seems like a logistical nightmare thoughā¦ Or am I wrong?
The weight of the cells ends up being the bigger thing when it comes to esk8. Making them flat wonāt make them less heavy.
Ehh, theyāre not terrible. Soldering (as opposed to spot welding) any battery isnāt technically a good idea, thereās lots to go wrong. That said, Iāve made several soldered 18650 packs and theyāre holding up fine last I checked.
Hey @b264, howās that 25R pack doing?
The 25R pack is in one of my back-up skates that I use when I have breakdowns. Still going.
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Spot welding is the way to go from what Iāve seen, but most people still donāt make their own batteries. Iām learning so I can eventually do that. I even found the cheapest 30qs around just in case haha
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The cheapest 30Q are the fake ones.
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No, I just meant I did my own research and found nkonš
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Also true. Get them from a reputable source. I like ru.nkon.nl, they have good prices.