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coin3ip avatar image
coin3ip asked

Mini Direct Solar Charger - product proposition

victron-minisolar-charger.png

Hello, I'm searching for a poduct, that apparently doesn't exist (yet).
So I drew something quickly to show what it could be, and explain..
It would be easily carried around, and could be plugged to most random standard panels, cheap refurbished ones from industry, to weird and powerful portable solar array. with a high enough max input limit. the output goal is to have standard USBC Power Delivery up to 102W to power a laptop during the day, and charging a couple more things while doing so.

I've made a portable Direct Solar setup for my dirtbike, and I'd like to make use for the same panels and/or array, to use my other tools and equipment while not charging the bike.

Also, I'm sure it would be very useful to a lot of people, in a lot of different usecases. :-)

Victron is obviously the most reputable company in this space to make such a product, and I'm surprised it still doesn't exist. I hope the standardization of USBC-PD will make this happen faster. :-)

chargerEasySolar All-in-Onesolar
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Alexandra avatar image Alexandra ♦ commented ·
@Coin3ip

Stuff like that sort of exists. Goal zero jackary bluetti all have similar products.

Execution of those items with various shortcomings.

The main one being the daft solar panels they use.... So mods all round to get around that exist.

But yeah am with you on that idea.

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nhuillard avatar image
nhuillard answered ·

What I did last october was: an MPPT controller like yours in a waterproof case, with a lithium battery inside and various adapters for the output.

img-20221031-151113.jpg

I guess that outputting 100W using USB-PD will not work reliably direct from solar. Some sort of buffer battery is needed to provide continuous power even when clouds passes.

Your bike battery should do the trick. Just add the output adapters you need.

Mine are 12-24V car adapters from Aliexpress, and LED drivers, which output 750mA whatever the voltage, to speaker connectors (upper right), which direct desk-lamp from Ikéa (old model which doesn't exist anymore, but with failing power adapters, not needed here).

img-20221031-151131.jpg

The case is from Explorer Cases. The grey plate is custom-made from a distributor which could be not that far from your location, as I understand it (I'll get back the name if you're interested). There are many sizes. This one holds the MTTP above + the battery below the plate. And many wires too...

img-20221031-155628.jpg


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