I mean hey, if it’s possible, absolutely! It would be awesome to have a like 1lb charger that’s the size of a PD brick! It’ll be a while before that happens though
I apologize for losing my temper @DerelictRobot . I only wish if you had read through the new messages, you’ll spot @Battery_Mooch making the same questions as you did but more peaceful and respectful manner, and that I have already addressed his concerns and made promises to conduct no sales before said concerns are considered sorted. Regardless of the way you have expressed your opinion and suggestion though, I have come to realise that deep down I do appreciate your feedback, because of the value it brings in terms of telling me what people value most when they are looking for in an item like a charger. So please accept my apologies and I thank you for the feedback. I hope you could do me a courtesy in the future and keep the aggression a bit lower when trying to bring feedback, hot-tempered kids like me might take it the wrong way at first glance, but if you don’t want to change and stay the way you are, that’s fine too.
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Jeez the overwhelming one-sidedness of this poll…
I must warn you, with less room for heat dissipation and less volume for heat storage, at a lower AC input environment such as US or Japan, the charger might begin to throttle after roughly between 45 to 90 minutes, depending on the environmental temperature, and reduce its output down to 5A by force until the temps drop to an accepted level, then it will run at the full 10A output again. This shouldn’t be a huge issue for anyone running a relatively low-capacity battery pack. However, it might render some people with ridiculously big battery packs a bit of a different reality than their expected performance from this charger.
To be fair, though, the MFG was made for portable on-the-go charging, and I think those are usually between 1 - 2 hours. If such tradeoffs are acceptable, I’ll see what I can do in terms of de-potting maybe half the chamber and only keeping the GaN-FETs potted, as well as the PFC and a few other components that emit the most heat.
Yeah that’s not what pending means genius. Pending means you’re currently going through the process and awaiting your certification. You haven’t started that process at all.
that’s what trying to solve a problem that doesn’t exist tends do 
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why not use a heat sink solution? the entire casing issss metal,
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Im gonna second the notion of just making the casing be a passive heatsink. Some well placed thermal pads should solve this and work way better than half-potting.
This is already the case, only that previously, there were way more areas on the inside of the casing physically contacting the silicone to conduct the heat off of the IC. I don’t remember the specific numbers here, but I’m like 1000% certain silicone’s specific heat capacity is higher than that of air.
Isn’t it a really bad heat conductor though? Maybe a itty bitty 20mm internal fan would be good
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Yup, it’s a truly lousy heat conductor. But it’s better than air. 
There are some with additives to increase their thermal conductivity but they are crazy expensive.
I think lowering the IP rating and using a good fan might be a worthwhile thing to explore. It would certainly match some of what the folks here would prefer. It lightens the unit and could lower parts and assembly costs too.
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A fan will introduce noise, albeit there isn’t much heat, to begin with, so it might work out. What I am concerned about more than noise is the increase in footprint by introducing a fan into the already slightly bricky casing…
The drop or cancellation of the IP rating is acceptable. It is definitely nice to have, but it’s not like we need to charge during our group ride in the Atlantis…
I think the middle ground might be looking for an alternative compound to inject the casing with or ditching the compound altogether and just leaving this charger for whoever is looking for a quick top-up during a group ride. In that case, 45 - 90 minutes of max sustain capacity is more than enough. Did I mention that the throttle comes after the test was done on a 90V AC supply while sustaining max load the whole time? In reality, the charger will probably stay within 60% max load on startup of charging a 0% battery and ramp up slowly over the course of the charge… The thermal throttling might come even later than anticipated.
Another way to do this is to let people decide for themselves, introduce both the potted and non-potted versions, and pick your poison accordingly. I guess two SKUs aren’t that horrible to manage.
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This is not a valid complaint. As shown by the many higher wattage non-gan chargers that have been posted in this very thread
…that are the same size or smaller
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Go fetch me a smaller one or one that’s same in size, I’ll wait
$60 on AliExpress
I still just don’t see why one would pay $300 for this charger. There aren’t enough benefits provided. The size difference compared to chargers with fans is negligible, and I can barely even hear the fan in my AliExpress charger.
but not quieter?
i think the target use case, charge noisely in a coffee shop or lecture hall. is a reasonable one. everyone who wants a charger may not want that. but pretty sure, from my skimming above, it’s a main goal of this project using gan to decrease heat to not require fan to reduce noise
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dude, the size differences are negligible lmao. you won’t notice the difference in your backpack between the radium charger, AliExpress, or your 
gan charger…
volumetrically, the GaN charger is marginally smaller yes, but it’s also lengthier which imo defeats the purpose
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Literally in the thread. This is effectively smaller.
So are the ones I posted earlier. the 200mm length is a bigger drawback than the like half inch saved in thickness.
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