There are a lot of options and it can get complex.

I would look first at the amount of data the PUC generates and how that translates to a monthly data plan.

In general, our preference would be something like the Teltonika RUT241 in a waterproof enclosure. We have seen people using USB sticks, but I can’t vouch for them in terms of long-term reliability.

Power consumption of these devices tends to be in the 1 watt plus range so it likely pushes you up to the 25 Watt or 50 Watt CORE system in terms of sizing. I would measure the power consumption of the USB device prior to making a solar purchase.

Do you have any recommendations for cellular wifi devices? I have this exact set up but it’s hard to manage the upload time it takes to bring it in and upload it. Would be nice to have a complete set up for remote that can remain live

Hi Jesse,
The technical team at 3M is very helpful. Before going into production, I would ask them for their guidance on which VHB, which thickness, etc.

We haven’t seen any issues of degradation with the seam exposed, but it wouldbe good to get their feedback.

No, all parts are included with the 5 Watt System.

We have a few hundred V25s in reserve with this feature while we sell through the previous version, but the same caveats apply. The USBC PD port can’t currently be used as an input for Always On. For Always On mode, you need to charge from the side port. You can output from either the USBA ports or (pending) the UsBC port with a special cable – however, that output won’t be PD.

V75s are available with some caveats. The USBC PD port can’t be used as an input for Always On. If you’re charging the battery from PD and using the USBA for output, you will see some power cutoffs. For Always On mode, you need to charge from the side port. You can output from either the USBA ports or (pending) the UsBC port with a special cable – however, that output won’t be PD.

Hi Robert – it will take a bit of testing, but the site is saying the 2150mAh battery lasts 6 hours. That is equivalent to 32 Watt hours a day (2.15A*3.7V*4). It really pushes you up to one of our bigger systems, probably:
https://voltaicsystems.com/25-watt-12-volt-solar-power-system/
https://voltaicsystems.com/50-watt-12-volt-solar-power-system/

That would give you closer to 7 days battery life, vs <2 with a V75.

There are other options for cellular wifi and it would be good to find a way to power optimize it as it feels pretty ungainly for such an otherwise small and energy efficient device. Maybe there is a way to have a have a router sleep and update once an hour and then go back to sleep.