ECO-WORTHY Solar Power System for RV Off Grid Solar Panel Kit with Battery and Inverter: 2pcs 100W 12V Solar Panel + 20A Charge Controller + 2pcs…

This kit has worked out really well for my shed and the various projects I do out there. It provides enough power for me to charge tools, have lighting, run a raspberry pi and computer monitor. I was a little skeptical of the kit at first but after some testing everything seems to work fine.
I used four 6 watt led lights to test battery capacity. I charged the battery to a voltage of 14.1 volts (less than the 14.5 max but should be >95%) and discharged down to 11.2 volts (again, above minimum voltage but should get pretty close to full discharge). There is no state of charge documentation for the batteries (I even asked customer service) but I assume I was able to drain >90% of total battery capacity. With the four 6 watt leds, I was able to run continuously for nearly 18 hours. I probably could have squeezed more power out if I went to the extremes of capacity. Overall I think the batteries are good. Maybe someone will test with a shunt at some point.
The only down side for me are that the z-brackets are super sharp – I cut myself on them, so wear gloves.
If you buy this, consider upgrading the PWM to an MPPT.

I ordered 2 sets of these and both inverters on these were either damaged or defective. I tried multiple times to get replacement inverters for the last month and a half and can’t get them to understand “2”. They eventually sent a replacement inverter that was only 1200w peak and 600w rated and it originally comes with 2000w peak with 1000w rated. I am unsure if these people are doing this on purpose so I have to go through my warranty I purchased or they are just incompetent, either way DON’T BUY! More trouble than it is worth! Be warned!

Pictures that may help someone with their set. Ignore blue ring terminals on the controller. Had added them but will be removing.

Wired solar panels in parallel (12v). I don’t need the 12v so could have wired in series (24v) as the controller accepts it according sticker on the back. However, the information for the inverter implies it allows for 24v, but didn’t say so explicitly.

Wired batteries in parallel to make 1 12v 40Ah battery. Then wired to inverter.

Blue and brown from battery connect on controller to battery.

Done.

Was getting power at 7pm or so before undervoltage shut it down.

Good system so far, just fumbled through setup.

Arrived in 3 packages on 3 separate days over course of 2 weeks (panels and controller ship together, but batteries and inverter separate). Must connect everything in parallel to get the inverter to work properly, so you are limited to 100W, 12V even though controller is 12/24V. Neither manuals nor vendor tutorials give little details on terminating cabling between controller, batteries, and inverter. If you don’t feel comfortable stripping cables, this may not be be right for you. Stripping the cable that came with the inverter was particularly troublesome. Also, only one end of the wires for the inverter were terminated so prep for a little bit of sparks/melting of the strands when you connect to the battery, unless you add your own ring terminators. No wiring came with batteries so I had to borrow/cut a couple pieces from end of the wiring that came with the solar panels, which is thick and difficult to lock in under the relatively tiny screws on the batteries. Emails to vendor for troubleshooting questions were answered within 24 hours. I wish I had done more homework so I wouldn’t have been surprised that a solar “kit” isn’t exactly plug & play. Once set up runs just fine and am happy with it so far. Disclaimer: I have never set up nor used one of these things before, which may have contributed to the difficulty during setup.