The battery builders club

you should open a roadside assistance service for esk8s

'BBB’luepenguin

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Connect the busbar with tabs if you don’t wanna solder on top of the cells.


Those are all on tabs that are folded back over the cell.

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Perfect fit for the next Starbucks visit :ok_hand::+1:

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Is it ok to connect a 5V charger to a cell and then control it to not let if overcharge?

I guess it would somewhat work, but it isn’t a good idea probably because you won’t have real CC/CV charging which would have a constant current until max voltage is hit and then vary current to keep that voltage until the cell is fully charged. If the charger is 5v you won’t ever enter CV mode.

Edit: what type of charger are you referring to? Those USB phone type chargers aren’t really chargers, they are just 5v DC power supplies. The charging circuit is inside the phone.

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Ah that lovely switched colored wires picture again.

Battery building gold that is.

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Hahahaha yeah ignore my dirtbag wiring

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MONDAY20
20% off on fogstar

We now offer FREE DELIVERY on ALL Batteries, Chargers and Accessories. You can also use the code below for 20% OFF. No minimum order required.

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Nevermind actually. I managed to jerry rig a broken 4.2V charger for an old flashlight.

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Is this only for the non-wholesale site? Because it doesn’t seem to work.

got the email from regular site, not the wholesale one.
Doesnt work for wholesale for me as well

Thanks. Bummer

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I would have been surprised if it was the wholesale site. Their prices are outstanding as is

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They do a discount like that once week, doesnt apply to wholesale site

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This 10s BMW has a b- and a b1 does that basicly mean there are 2 wires on the same point of the battery? Both at main negative?


Also for charge only I just solder my negative charge lead to c- is this correct?

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Yes. :+1:

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No. B- is on main negative, b1 is on group 1 positive or preferably group 2 negative.

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Depends if you start counting from 0 or 1 lol. Isn’t it B1-B11?

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