I'm sending regular updates to all waiting customers via email. If you have an order, did you get these emails?Trewella said:
It's all in stock since last Friday. We are busy packing orders, as these are many we need a few days for this.
kWeld - "Next level" DIY battery spot welder
- Thread starter tatus1969
- Start date
It's all in stock since last Friday. We are busy packing orders, as these are many we need a few days for this.
According to their datasheet, their internal resistance is only 0.36mOhms, which is more than appropriate. You should get more than 1000A with two cells, but voltage is a bit at the low side so maybe three of them in series would work even better.kocetoMR said:
garolittle
10 kW
tomjasz said:
Agreed. This looks like a really great product. I will be making room on my work bench soon.
Received my kWeld and kCap kits, finished assembly. Everything went OK, with the exception of a defective M2.5 x 12mm bolt for the LCD standoff. I didn't find a replacement at a local utility store, but managed to find a couple of short 2.5mm bolts laying around in the drawer, so I secured the LCD from both sides. Also one M4 x 12mm bolt for the bus bar was actually M4 x 10 mm. Luckily this didn't affect assembly and hopefully the current rating of the bus bar.
I have a question about kCap balance circuitry LEDs. When should they light? When using kCap I noticed only the power LED is lit constantly. Three balance circuitry LEDs don't light at all. Is this normal?
I have a question about kCap balance circuitry LEDs. When should they light? When using kCap I noticed only the power LED is lit constantly. Three balance circuitry LEDs don't light at all. Is this normal?
It's not the first time that my supplier here has messed up, I'll speak with him.thodtmd said:
When the balancer has nothing to do, they all stay off. This means that the capacitors are closely matched in capacitance. You'll see them flashing when welding, as the high current pulses briefly distort the monitoring circuit.thodtmd said:
And I thought I messed up with using an old ATX PSU as an input for my 12V -> 8.1V DC-DC converter. The current rating was 13A @ 12V, but it gave up magic smoke at ~ 9A. 
When I switched to a 7Ah lead-acid battery the LEDs didn't light up. Today when I charged the caps the middle balancing LED lit up, so I guess everything is normal.
So far very glad with the purchase. But I am waiting for your custom capacitor charger PSU, Frank!
When I switched to a 7Ah lead-acid battery the LEDs didn't light up. Today when I charged the caps the middle balancing LED lit up, so I guess everything is normal.So far very glad with the purchase. But I am waiting for your custom capacitor charger PSU, Frank!
Thanks for that feedback!thodtmd said:
It's a shame, even more when I tell you that it just needs a layout update. The problem is that to run my business I need to give contract development opportunities priority, and ... ... in simple words, that part is working out too well.thodtmd said:But I am waiting for your custom capacitor charger PSU, Frank!
garolittle
10 kW
Very impressive. It is amazing how easily the Kweld works with .3 mm nickel strips. Nice product!
garolittle
10 kW
Carman said:
https://www.keenlab.de/index.php/product/kweld-complete-kit/
tomjasz
1 GW
Carman said:
HA HA! On step closer to a poor quality copies...
garolittle
10 kW
“I recommend to use a Turnigy nanotech 3S / 5AH / 130C, or a 65AH car starter battery.”
So the Turnigy 3S/5AH. 130C batteries appear to be sold out on HobbyKing and other sites. What is the best 65AH car starter battery for the Kweld? Thanks.
So the Turnigy 3S/5AH. 130C batteries appear to be sold out on HobbyKing and other sites. What is the best 65AH car starter battery for the Kweld? Thanks.
Turnigy must have seen a recent order peak of this particular typegarolittle said:
There is an alternative Lipo model that I have also tested: https://hobbyking.com/en_us/graphene-6000mah-3s-65c-w-xt90.html
I haven't used starter batteries, but a customer has reported that these are working well and deliver 1000A+: http://ultracell.co.uk/products/uxl-batteries/12v (model Ultracell UXL65-12).
garolittle
10 kW
tatus1969 said:
garolittle
10 kW
tatus1969 said:
Thank you Sir and thanks for making this great product.
