200mm is slightly too short, b- and b1 would need to be lengthened.
250mm would be perfect for a clean install.
But my approach with balancer does not really work, few components exploded on the balance pcb due to incomplete connection.
Should be easy to fix but Iâm not sure it is a good solution. Best would be to use the pogo as the first connection and a normal connector to plug the balance board.
But is it a good idea to use a magnetic connector for balancing? voltage drop is critical, are these chinese unknowns good enough to trust? A generic pin connector has so much more contact area and robustness IMO.
Here size is a consideration, this magnetic connector is small.
These connectors are rated at 2A, and my charger for example balances at max 1A.
You are assuming that these chargers work such as balance wires resistance matters. I donât know what is the actual implementation, but i assume it doesnât that depend. Why? Because a. the balance wires are usually pretty thin b. if I were the engineer to design a charger I would measure the cell voltage at minimum balance current, meaning - after doing the raw balancing the charger will lower the current to a minimum such as not to have drop on the wires and that voltage will determine the balance
Normal connectors get scraped clean of oxides when they are assembled, and they have a larger contact area. Donât know how the magnetic pins work and how the contact is assured from pin to socket but itâs not so easy to get even pressure on 13 points that are spread out, even on a smaller flat surface. What takes up the tolerances?
In this way i see a normal connector to be more robust.
@rttn yes, png1300 too. They stopped using axis logo at least. Fuse and mast hole is different from axis, there is no cross compatibility exepted on front/rear wings.
@lishine these balancers do not accept a missing cell as they work from one cell to another. I donât like rc chargers, I prefer BMS or balance boards and psu to charge.
@rttn
Yes, indeed these magnetic have small contact area, meaning much higher resistance, but you know, the question as always in engineering - what is enough, do the minimum requiredâŠ
Ok, I measured and the contact resistance is 0.3ohm! It is ridiculous!
For example db15 contact resistance is 15mohm.
@Bzhwindtalker We have to check if this connector suitable for balance at all!
I see that the brand of the wings is - Guang-Yong - it is the one that produces the copy of fd-gen2.
How much the foil set cost you?
I first bought 1300 set complete with carbon mast, 580 EUR shipped.
Then, 1201 front wing, that was supposed to be compatible with my fuse. They are not, and a Friend lent me a axis fuse, does not fit on my mast. So I ordered the 644 fuse and 360/45 stab. The fuse came without screws
How did you mesure? A normal multimeter even good ones Can not mesure such low resistances.
I used pogo extensively for USB applications on a outdoor product with live 5v. Oxydation Can be a problem but the gold plating usually provided good protection.
I connected two sides of one pin ( female side to male side) to a nickel piece by short wire (just to get an estimation).
First tried to measure with the YR1035+ (good instrument, I used it to measure successfully cells resistance and other mohms resistance), it showed 300mohm approximatelly, but not stable, apparently it is not good for such high resistance.
So the regular ohm-meter showed the 0.3ohm - shorted the leads - shows 0, then measure.
Iâve encountered a annoying issue to solder the connector pin (which might be the same problem youâve experienced). I had to apply significant pressure to keep the soldering iron on the pin due to the strong magnetic pull. The powerful magnet made it quite challenging to maintain contact
I bought these pogo connectors in April. I played with them and realized they didnât fit my âQuick and Dirtyâ style. Here are my picks: Quick, Dirty, Brutal.When I connect this connector to the battery, I feel like Iâm charging a Tesla.