EEVblog Electronics Community Forum
General => Contests & Events => Topic started by: axolotyl on April 09, 2018, 06:17:19 pm
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We're live now on Kickstarter:
https://www.kickstarter.com/projects/pirl/the-ultimate-charger-for-power-users (https://www.kickstarter.com/projects/pirl/the-ultimate-charger-for-power-users)
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NOTE: This contest has ended.
Dear All,
I'm Kobby and as part of spreading the word before our Kickstarter launch, we're giving away some of our 50W USB chargers.
(https://www.pirlcharger.com/s/charger_bare7c.png)
Specs
- 4 independent ports, each fast charges at 2.7A
- No throttling
- First with integrated watt-meter
- Intelligently detects device speed
- Wide input range
- Multiple protections: over-current, dead short, ESD, reverse-polarity, and thermal overload
How to enter
- Go to pirlcharger.com (http://pirlcharger.com)
- Refer 2 friends
- We'll draw a few winners
What you get
1 x Pirl USB charger
1 x car adapter
1 x Meanwell AC/DC adapter
Third Party review
Check out a teardown here: https://lygte-info.dk/review/USBpower%20Pirl%20Charger%204x2.7A%20usb.html (https://lygte-info.dk/review/USBpower%20Pirl%20Charger%204x2.7A%20usb.html).
Feedback welcome.
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What kind of prices are you considering for the Kickstarter project?
It would also be nice if you could include decent quality USB cables with your product. More often than not, USB cables aren't capable of supplying anywhere near the maximum output of the charger.
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Next release please provide the CURRENT flowing out in each ports. WATT total is nice (to get a proper power supply) but not as useful.
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On pricing, we're still finalizing with our manufacturer and suppliers. Same with bundling cables. Stay tuned.
Good point on USB cables being an issue. We compensate for voltage drop across the cable, but obviously if you have a crappy cable we can only compensate so much.
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How can it compensate for cables? I assume it can only go up to the maximum USB voltage limit (5.25V). Even with that value, it would still be better than some chargers that swing around 5.0V.
I guess a small firmware update could make the display show amps on a long-press of the brightness button.
Shame that it doesn't support the typical 19V laptop supplies, but not a huge deal.
Any thoughts on mitigating audible noise? For me, capacitive piezo noise (or inductor whine) is a huge issue, ended up sending half of the high-power multiport chargers back.
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I did not win. :'(