I'd get the Renology w/out controller @
https://www.amazon.com/RENOGY-Foldable-Suitcase-Without-Controller/dp/B00LXG4AXS/
You dont want the controller on the back of the panel anyhow, it needs to be as close to the battery as possible and let the high voltage run be the longer.. I'd suggest checking out the
Victron Smart Solar 75/15, it could run two of these if you need to upgrade later.. and gives you nice stats and program options, worth the money.
I personally just carry around a huge 325w house panel, but its 60v+ and I can stick it on the end of long runs w/out much loss.. Make sure you use good cable, I'd suggest something
like this in 10 awg.. take a 100ft and cut it into 3 or 4 equal lengths and use fittings that can mate to eachother.. use only what you need for maximum outputs.
I was looking at the reviews of the smart solar and one of the reviewiers suggests using the blue solar with BT dongle. I am going to paste his review.
@dreadlocks what are your thoughts on what this guy says?
"I really expected to like the Victron Smart Solar. I already own the 100/15 Blue Solar plus bluetooth dongle, and have good results with it. However, after struggling with the Smart Solar I was disappointed and returned it. In my view it's a step backward from Blue Solar. If you're thinking of buying the 75/15 Smart Solar, you may want to reconsider and get the 75/15 Blue Solar and buy the external bluetooth dongle. There is really no benefit to the Smart Solar over the Blue Solar + BT dongle. You might save $10-$20, but you end up with an inferior product in many other respects.
First, the integrated bluetooth range is much less than the BT dongle. We're talking 5 feet vs. 20 to 30. This also gets to the heart of my main gripe: Victron's choice of Bluetooth transceiver. They're using newer BLuetooth Low Energy technology (BLE) vs older but more widely supported BT 4.0, as used in the external dongle. In my view it wasn't a good move. BLE, is not supported by the majority of BT enabled devices. If you want to use iOS or Android, be aware that even if they have BT, they will likely NOT work with the Smart Solar bluetooth! Obviously this isn't a good selling point and Victron sales literature doesn't warn customers about this ahead of time. You'll end up downloading their app and get frustrated trying to connect to the controller, and eventually learn that your 1 year old device won't work with it. Nearly every device in the world with BT will work with BT 4.0, but Victron went with the BT low energy and gave up compatibility with the majority of the world's devices. Was that a smart decision? Well they saved a few cents per controller, and I suppose low energy in theory saves some power. But, the charge controller is NOT lacking for power. It's either getting power from a PV array or a presumably large battery, not a tiny batteries where BLE might be useful. I would much rather have 20-30 foot range and use a few more micro watts of power than need to stand 5 feet from the controller. Incidentally at 5 feet away. And you'll find with Android, that BLE
requires that you enable location/GPS for the Victron Connect app to work! No kidding. Victron says they don't care about your location, and probably don't. But you'll need to accept that and enable location services to use their app with Smart Solar. With Blue Solar and the external dongle it's not necessary. This is forced on everyone by Google/Android not Victron, but again, the choice of using BLE was Victron's.
Finally, IMO the 100/15 is better constructed than the 75/15, albeit at a higher price. The 100/75 has an external heat sink and the 75/15 does not. That could be a benefit in a hot environment like the desert. You may want to take a look at it. The next step up is 100/20 which also has an external heat sink like the 100/15. All of these have separate load terminals which is really useful because the controllers have a configurable low voltage disconnect (via the app) and can also track how much power the load is actually using. When you get over 20 amps, for example 100/30 amp controllers and up, they do not have separate 'load' terminals.
Update: I measured the current draw of a Blue Solar 100/15 and Smart Solar 100/20. Connected to battery at 12.8v. No PV or load connected, and not connected to app via BT.
Blue Solar 100/15: 24 mA. With BT dongle 25.5-26 mA
Smart Solar 100/20: 34 mA. With BT dongle 35-36.5 mA
I don't have numbers for the 75/15, though it's likely not more than above. The point is, the BT 4.x dongle takes only 1 to 1.5 mA. Unless you're using a 15 amp MPPT controller with a battery bank the size of a coin cell battery, the BT dongle is the way to go (IMO)."
