Sorry to keep all of you waiting this long. We are very close, and expect to be ready to debut the V2 in a matter of weeks.
We have been working tirelessly on the V2. There have been a lot of changes that we have brought about.
The caps have been re-designed, and the physical shape is similar to the new SS V1.5 that was just announced.
We have changed the polymer making it more durable and smoother. They slide in a lot smoother and establishing contact is way easier.
We have changed the design of the internal contact too for the V2. It doubles up as a stopper now. So your cell doesn't get pushed in all the way. It will go in till a limit. There's a few more small changes and upgrades that are in the works as well.
Initial tests have shown the V2 prototypes to be capable of at least a 20A discharge. We are working on one final tweak .The IR too is similar to that of a spot welded pack. We have been testing it extensively. In fact the V1 served as a perfect study guide helping us and directing us over these 9 months.
If you think about it, the V1 itself has seen 3 changes till now.
First came the white transparent caps, with the dog tail bolts. Then came the coloured caps with the full thread bolts. And now the new V1.5 caps with a better design and different polymer with longer bolts. You can place about 5 if not 6 bus bars on each bolt!
Along the way we did face a lot of challenges.
We have been working hard as a company to be not just professionally progressive, but socially progressive as well. Did you know your Vruzend kits get made by women and the entire plant is run and operated by women?. Its a social initiative. Our way of giving back to the society. These woman are sole bread winners for their family. And uptil about 9 months back they could neither read nor write English. Today they know English numbers, basic sentences and most of all they know some stuff about lithium ion cells too!!. We also sponsor the education of their kids in the area.
Not just the Indian manufacturing unit but even our USA ware house is run by women. We have also tied up with high schools and universities in the USA and do whatever we can to provide them with some technical help and material for educational use for students.
So yes back to the topic,we did have some trouble with our quality check, that was mostly because difference in perception. Took a while to teach them. We have been quietly selectively selling the V1.5 caps since November. And the feed back has been nothing but great. Thats why we announced them this week instead of a couple of months back. We needed them to be tested at the user end.
Not just that, we had some trouble at the manufacturing end. The guy who makes the bolts for us messed up the dimensions and on a few kits you couldn't place more than 2 bus bars. Some bolts had their dog points (The non threaded part of the bolt so threading the nut is easier) perfect, some were below par. A big big thanks to CRAIGGOR. You have no idea how much that mail helped!. Will be contacting you soon.
A while back our molding machine died and we had to out source the molding of caps. Initial lots were up to specs. One lot wasn't. Due to improper flow temp and cooling time combo the caps had a tendency to crack some times. Whoever, ever emailed us with a complain, we have sent full replacement/ full refund. We always have and always will stand by our product.
There have been times we have given away kits for FREE to vets, school professors, ex-cops and fire fighters.
We appreciate all feedback, praises and constructive criticism. Every feedback helped us to improve and better the product. So a big big big thank you to all you guys out there. We took every word of your feedback very very seriously. We have really really tried to incorporate as much of your feedback into the V1.5s and the V2s as possible.
@ Parabellum and Matador, your mails with design suggestions have been invaluable. Will be contacting a lot of you guys really soon.
Matador, we actually tried out the spring loaded contacts you mentioned https://endless-sphere.com/forums/downl ... ?id=212933 https://endless-sphere.com/forums/downl ... ?id=213050
. Unfortunately the copper spring would loose its tension pretty soon, even the 1 mm and 1.5mm thick ones. Also, on a few occasions the the copper wire running between the springs, the strands would break over a period of time. Will email you the pic. We haven't given up on this. We are still working on it to better it.
This made us make changes to our present internal contact. Some subtle modifications actually ramped up the current from a modest 10A in the initial test to 20A at the moment.
@Tom, thanks for your continuous support and guidance. Thanks for being there.
@Spnningmagnets thank you so much for the review and the pleasant words. That was very kind of you and we highly appreciate it.
A BIG thank you to Mr John Clulow, who has extended a lot of professional help and guidance to us. His knowledge about materials and design is in valuable. His constant guidance and suggestions has helped us immensely. Him and Micah have been testing the V2 prototypes for a while now.
Lastly @MLT34 (Micah), Couldn't begin to thank you enough. On multiple occasions you have gone above and beyond of what was required. I think they will take the post down if I begin to write the kind of things we had to go through..hahaha