KT Cables 200w vs 2 x Renogy 100w?

Thanks for this, so to be clear - given that most panels are about the same efficiency at ~18-19% efficiency, then isn't this is as good as it gets?

If so, isn't *any* panel going to be pretty much the same? I.e. any 200w rated is going to actually give ~175w?

You're saying the Renogy is much the same surface area as the KT Cables?

Surface area wise yes, quality is hit and miss on all brands.

As I replied. I have 3 x 200watt Renogy panels and quite often get 11+ amps output with a Victron MPPT. Mates have them as well and we all swear by them for price and performance. Anaconda, supercheep, bcf, etc.etc. are normally overpriced cheap shite.

11 amps each or 11 amps combined? I'd be expecting 11 amps each.

11+ amps EACH.

Can you clarify (if this is what you meant) why running 2 x 100w panels in series might be better than a 200w panel?

Starts to charge in lower light conditions and also less voltage drop in the cabling between the panels and reg, but you must have a MPPT reg that is rated for the higher input voltage such as a Victron 75/15.

Yeah, noone said they were missing.

For good measure, from (and on back of panels): https://ktcables.com.au/2021/03/18/200w-monocrystalline-12v-solar-panel/

Technical Specifications:
Maximum Power (Pmax): 200Wp
Power Tolerance: +3%
Maximum Power Voltage (Vmp): 19.6V
Maximum Power Current (Imp): 10.20A
Rated Voltage: 12V
Open Circuit Voltage (Voc): 23.2V
Short Circuit Current (Isc): 11.27A
Operating Temperature: -40 °C to +85 ° C
Product Application: Class A
Maximum System Voltage: 1000V DC
Product Weight: 11.50Kg
Dimensions (mm): (L) x 670(W) x 35(D)

Right, that's good info, thanks.

Does it really matter considering for under $200 you will have a genuine 10+ per panel?. Heaps of so called 200 watt panels out there that struggle to give 7 amps output.

Yes I would say it really matters.
It is false advertising and they seem to be getting away with it.

How do you engineer a system if you cant rely on the figures supplied by the supplier before purchase.

Would you be happy if you just forked out for a 6Kw system on your home and it couldnt produce 80% of the goods, or found you only 10 eggs in the dozen package.

Very little advertising on any product is 100% accurate. Fuel usage, vehicle tow weights, electrical consumption on appliances, quality of a new home, contents of food packaging, many warranties etc.etc. Renogy advertised a 200 watt panel as putting out...Short Circuit Current (Isc): 9.66A
Optimum Operating Current (Imp): 8.85A

Isn't this the info the vast majority of us want? As I said, mine put out around 11 a/h in ideal conditions. Around 9-10a/h usually. I cannot see any false advertising and consider these panels good bang for your buck. Few of my mates have them and are also very happy. I,ve had cheaper and dearer panels but these are excellent value.

Sad world when everyone just accepts their bulshit.
Panels dont produce what they should, fridges draw a bit more than stated, batteries that dont quiet store their rated capacity.
To meet customers expectstions you have to double advertised capacities then it is too expensive.
People argue the price down then when it doesnt do what they want they take you to consumer courts.
These days I only install what the customer buys elswhere, cant be bothered dealing with people who gather their facts from misinformed forum experts.
Did one yesterday that that the junction box fell apart as soon as the box was opened and the owner chose to proceed with the installation even after I told him the supplier would not honour warranty if we patched it up. But the product was recomended by someone on a 4wd forum.

The thing is that you don't have to accept their bullshite. I never buy anything without a lot of research. I mean a lot too. If people only researched a lot more their would be less seemingly ridiculous questions and replies on forums, farcebook and other social media. Misinformed forum experts...that would be everyone who posts on a forum...someone will always find a fault with a statement or fact you have written.

As I said...the best way to ensure you get good advice is to do heaps of research...not just farcebook, google, forums but to actually talk to people who have purchased the product...not always possible but great if you can.

Bigfish - QLD.
The renogy panels while quite good and stated at 8.55 amps is conservative if you get 11 amp flow sometimes. In theory @ 14v the panel should be delivering 14 amps if really 200w. Most people don't/can't run their system at the peak power voltage, but achieve close to it with an MPPT reg .
I have one quality panel of 80w and it delivers 6 amps cc but less in reality, 5 + when in system operation, therefore, a similar 200 watt panel should deliver 13 + amps in theory. Most times the output is not near the stated with any panel. I have two used, 36v oc panels, total 500w claimed, in series on a system and the MPPT reg has registered 470watts just once. Not sure why it got that high. Mostly/daily it nears 320w Max from a 12.3v level in good conditions, so a lot less than all the figures.
Not sure that QLD needs to double everything though, but as long as people work out the stated figures and claims and then expect it to be at least 30% less in reality and work on that level most are happy with their gear. "Nothing is ever as it seems".