A quick community service announcement: Earlier this year I got contacted by a Chinese company called Ovartech, whose website lists a range of chargers and DC/DC converters for electric vehicles. I couldn't find any independent reviews of the company or their products on Google, but thought I'd risk it and ordered a sample of their 1kW DC/DC for evaluation.
I placed the order on 31st January, paid for it on 2nd February, and as of 31st March am yet to receive it. So I would advise against ordering from this company until we have more evidence of their legitimacy. Hopefully this forum page will show up if anyone else out there finds themselves looking for information on this company before committing to an order.
If I do eventually receive the order, I will be sure to update this thread and provide an honest product review.
Hi Brock, no news other than a further couple of emails exchanged with Frank. On 4th April I sent an email requesting an estimate on when the order would ship, and received a reply on 13th April, suggesting that it should ship around 20th April (i.e yesterday, but I haven't received any further updates).
Hi Brock, nope nothing to report unfortunately - no shipment or updated ETA from them. I've basically given up asking about it now. It'll either turn up eventually or it won't.
I'd be interested to hear from anyone else who's had dealings with Ovartech actually, whether anyone has actually received products or it's all just a vaporware scam.
We haven't gotten ours yet, but Frank is staying engaged with us and asking technical questions like what we need for CAN specs...will update as things unfold.
Hi Ian,
Sorry to hijack your thread on this public forum but I have tried to contact you regarding your products a few times through your website and through AEVA forums and have never received a reply, if you are still supplying your EV products could you please send me a PM detailing how to contact you privately
Regards
Hi baxy, sorry to hear you were having trouble getting in touch. We have had some issues with the website email system over the last month and I fear some messages may have been lost. (But AEVA notifications should have come through to me - I'll double check my settings there.) Anyway I'll send you a private message to continue the conversation.
@ZEVA: tnx for your review, gives me a lot of info.
So you think OVARTECH has done a great job with this equipment, besides the leadtime.
Are you using an aircooled version or a watercooled?
If leadtimes are getting within expectations I will order also.
I have the aircooled version, the 1kW one without a cooling fan on the heatsink, i.e passive air cooling only. Luckily it seems like it won't get particularly warm in my EV.
I've been in the EV conversion game for about 10 years now and it has always been hard to find good DC/DC converters. Lots of them proved to be unreliable, or weren't really designed for the job. Most EV I've built personally have used IOTA DLS55s, which are technically an AC/DC power supply and are not weatherproof (open housing), but they worked fine with DC input and were quite reliable. But AFAIK they're no longer available, and the open housings make me nervous (just waiting for the day that dirt or water ingress kills it). So finding a better option was my original motivation for trying out one of the Ovartechs. The lead time was worrying, but I think if the company can address this and improve availability, they could do well.
It would also be good to see 100-200V versions of their DC/DC converters, since probably the majority of EV conversions are in that range.
Hello all, I am Frank from Ovartech, we admit that we had some problems before on lead time, finally all our buyers received what they paid for.
Thing are getting better now, basically we have inventory for our hot sellers, for example:
3.3KW charger in 108V, 144V, 360V
6.6KW charger in 360V
1KW DC-DC converter in 360VDC.
Anybody who are going to order from us, please check with us the inventory before you issue a purchase.
If you are interested in expanding your product line, you may wish to consider a 700VDC nominal (800VDC peak) charger. Quite a few people are moving in that direction to get more performance (and the new SAE DC fast charging standard now supports it). But currently there is only one 800VDC charger on the market and it is extremely bulky and extremely expensive. So if you were to develop an 800VDC charger similar in size and price to your current offerings, I think you would find little competition.
My name is Brent Miller and I am the Inventory Coordinator for New Eagle. New Eagle specializes in mechanization controls, which are the electronic brains that drive mechanical systems.
New Eagle currently has 11 OVAR DC-DC (EV 1kW DC/DC CONVERTER, AIR COOLED, 200-420VDC, 14VDC) converters available.
Please reach out to me if interested or if you have any questions regarding New Eagle or any of the products we carry. Thank you Brent
Best to email them directly.
it only took about a week to get mine from Ovartech (In China) But Australia is pretty close by.
StealthEV have the exact same charger, just rebranded. It'll probably be easier for you to get it from them once you factor currency conversion and freight charges considering your in the states
Where are you guys on this - I'm looking at the 6.6KW OBC 1.4KW DC-DC Converter Bi-directional charger from them. Their site is a bit sketchy but it looks like this is the latest and greatest in this direction.
Any thoughts or comments on this?
I think the price is around $3k which isn't bad considering the size, weight and duel use.
Exactly how does the bi directional charger work? What sets the schedule?? …. I have the stealth EV 6.6kW one and just recently got it up and running. There is a vacuum of information on this thing… literally nothing but one wiring diagram… by some miracle it seems to work tho…. Would love to use the p85 pack as a pseudo powerwall…. That would equal what? 7-8 powerwalls?
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