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Click on image for the lowdown. 
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| | | Forums66 Topics128,180 Posts1,057,149 Members48,464 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2019 Posts: 2,243 Herder of Cats, Goats, and Sheep (moderator) | | Herder of Cats, Goats, and Sheep (moderator) Joined: Jan 2019 Posts: 2,243 | The simplest way to rough out the current draw is to look at the wattage output. 15W-30W is pretty normal these days, which works out to 3A-6A at 5V. Once you take switching losses into account, it would be about the same current on the 6V input or roughly half that current on a 12V input. @Jon: USB Fast Charge has evolved into USB Power Delivery. This is a decent summary: https://www.makeuseof.com/tag/usb-pd-power-delivery-charger/ | | |
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