Anker 767 NON Portable panel suggestions

[watchdoc]

I'm gonna be testing an Anker 767 with NON portable fixed panels and I'm looking for panel suggestions to meet or overpanel the 1000 watt Solar input. The 60volt @ 20 amp box is difficult to find rigid panels to fit in.

Any suggestions would be appreciated.

 

[watchdoc]

One combo I've figured up so far is the NewPowa 250 watt 12v panel with a VOC of 27.28 and an IMP of 10.51. Four of these panels wired 2s2p would be 1000 watts BUT these are discontinued are pretty hard to find now.

 

[watchdoc]

Another alternative worth exploring is the JJN 200 Watt bifacial 12v 10BB panel. 6 of these panels could be wired 2S3P for 1200 watts and overpanel the Anker. I'm not sure how bifacial wattage gains affect voltage though. This setup would be cheaper than the NewPowa panels as well.
VOC 28.1V (2 in series = 56.2volts)
IMP 8.55 (3 in parallel = 25.65amps) *NOTE: the Anker can only draw 20 amps

The 56.2Volts is awefully close to the 60V max input rating but still less than Anker's own 531 200 watt panel at 57.6V.

https://www.amazon.com/JJN-Bifacial-Monocrystalline-Efficiency-Charging/dp/B09VS7PR2J/ref=sr_1_4?crid=13ZFOXUBOLBRK&keywords=jnn%2B200%2Bwatt%2Bsolar%2Bpanel&qid=1675277219&sprefix=jnn%2Bsolar%2B%2Caps%2C164&sr=8-4&th=1

12V 200 Watt Bifacial Solar Panel 10BB Mono High Efficiency Solar Pane

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[watchdoc]

I decided to go with just 2 large bifacial panels. They are Qcell 480 watt bifacial panels. These are listed with up to 525 watts with bifacial gain, a 53.38V VOC, 11.12ISC and are really cheap. There are numerous options for these giant bifacial panels which might have a better chance at maxing out the Anker 767.

 

[watchdoc]

I'm having two issues with my Anker I wanted to report. First is low solar input "clicking" first thing in the morning and again in the early evening. The unit appears to be sensing voltage but not enough to start charging so it it clicks off and on. I seem to remember a similar issue with the Delta Pro awhile back that is attributed to low panel voltage in the morning and evening.

Next, I'm testing with 2 URE 365 watt panels wired in parallel. 40.7VOC 11.43.ISC. I can only pull around 405 watts out of these panels. The unit seems to be stuck in "10amp mode" despite measuring 37V VOC and 33V at the parallel connector while connected to solar. These same two panels wired in series produce over 620 watts with the Bluetti AC200MAX and will produce 920 watts if 3 panels are wired in series. (coincidently, 6 of these panels wired 3S2P will easily overpanel the EcoFlow Delta Pro)

I've reported these issues to Anker and I"m waiting for a response. Their customer service is excellent.

 

[watchdoc]

So I hooked up the Qcell 480 watt bifacials yesterday and was underwhelmed. Averaged 750ish with a few spikes to 800 was all I could manage. Played with the angles and even tried reflective material here and there to get some additional bifacial gain but not much luck. It's gonna be really hard to overpanel this Anker and get the full 1000 watts of input.

 

[watchdoc]

More interesting behavior from the Anker today. Bright sunny day around 80 degrees. Anker is in my garage. It was fully charged from solar by 11am and I wanted to run it down quickly for some additional panel testing so I plugged my Leaf in to level 1 charge at 1440 watts. The Anker estimated about 2 hours of run time with roughly 600 watts of solar input. Well, it only ran about 90 minutes and dropped from 30% to 1% during the last 5 minutes and then the inverter shut off. I'm guessing the cells need to rebalance but there is no procedure listed in the manual so I emailed Anker. I also noticed the battery temp was 95 degrees. I've heard the GaN chips are supposed to run hotter so this may be normal. Despite the 95 degree battery temps and charging the Leaf, the fans never got loud or went into any sort of "overdrive". Once the inverter shut off, the solar input dropped to about 280 watts and stayed that way until the unit charged up to 3% and then resumed 500-700 watt solar charging. The battery temp stayed around 94-95 degrees for the next couple hours while it was charging. I'm wondering if the price you pay for the very quiet operation is throttled charging speeds?

 

[Bud Martin]

BTW, if the charger is charging at 1440W, what does the power meter of the Anker show?
I wonder what the 30% represent as Wh.
The 767 has 2048Wh battery, so 30% is about 600Wh (this may not be true depends on how the SOC is measured), so the your solar is providing 600W and you are drawing 1440W (or more due to 767 inverter efficiency), that means you will be pulling 1440W - 600W = 840W from battery so I cannot see how the 767 estimate the run time of 90 minutes.
Also what did they say about the PV input stuck at 10A limit?

 

[watchdoc]

BTW, if the charger is charging at 1440W, what does the power meter of the Anker show?
I wonder what the 30% represent as Wh.
The 767 has 2048Wh battery, so 30% is about 600Wh (this may not be true depend on how the SOC is measured), so the your solar is providing 600W and you are drawing 1440W (or more due to 767 inverter efficiency), that means you will be pulling 1440W - 600W = 840W from battery so I cannot see how the 767 estimate the run time of 90 minutes.

The Anker shows 1425-1440 on the display from the Leaf's EVSE load.

With no solar coming in and the battery at 100% the Anker estimates 1.2 hours with the 1440 watt load. With the 600-700 watts of solar coming in, that estimate went up to 2 hours briefly. In the end, it ran approx 90 minutes. I'm gonna repeat this test over and over for the next few days at various battery temps and solar input levels so see if I can detect any patterns.

 

[Bud Martin]

The Anker shows 1425-1440 on the display from the Leaf's EVSE load.

With no solar coming in and the battery at 100% the Anker estimates 1.2 hours with the 1440 watt load. With the 600-700 watts of solar coming in, that estimate went up to 2 hours briefly. In the end, it ran approx 90 minutes. I'm gonna repeat this test over and over for the next few days at various battery temps and solar input levels so see if I can detect any patterns.

1440W is what being dump into the Leaf, but due to the inverter efficiency (90%?, 95%? I cannot find that info on their website) in the Anker, to produce 1440W of AC power, the inverter will be pulling me be around 1515W @95% eff.
1515W load for 1.2 hours about 1819 Wh (calculator: https://footprinthero.com/watts-to-watt-hours-calculator), battery is rated at 2048Wh so they may set the cutoff at 90% = 1843Wh, so that is about right.

 

[watchdoc]

temps got to 105 on this charge and the fans kicked into a higher gear but they are still very quiet compared to Bluetti AC200MAX and EcoFlow Delta Pro. On this run, the Anker went from 15% to 1% in about 2 minutes and total runtime was 1:09. It was late in the afternoon and there only small amounts of solar. This time I used AC to recharge (after unplugging the grounding plug). Once again, the unit charges around 280 watts until it gets to 3% and then charges at full speed (1400ish watts).

 

[watchdoc]

Also what did they say about the PV input stuck at 10A limit?

They asked for the panel specs but never responded otherwise. I moved on to using the pair of 480watt Qcell bifacials which charge the Anker over 800 watts. I plan to do some additional testing on those URE panels once my new clamp meter arrives and follow up with their tech team. My guess is that the URE panels working voltage is too close to the 32 volt “10 amp mode” so the Anker defaults to the lower current.

 

[watchdoc]

Got 918 watts today after getting my angles right. Looks like the Qcell 480s are a good match.

 

[Trailpower]

Thoughts on over-paneling the 767 with a pair of these?
$320 each

BlueSun 550W (up to 663W Bifacial Gain)
ELECTRICAL PARAMETERS

Performance at STC (Power Tolerance 0 ~ +3%)

Maximum Power (Pmax/W) = 550W

Operating Voltage (Vmpp/V) = 41.96V

Operating Current (Impp/A) = 13.11A

Open-Circuit Voltage (Voc/V) = 49.92V

Short-Circuit Current (Isc/A) = 11.28A

Dimensions (32kg / 73lbs )

2285_1134_35mm

90 x 44.6 x 1.37 in

 

[Bud Martin]

You can only do 2p since 2s will exceed the max PV input Voltage, so the calculated power you will get is 41.96V x 20A = 839W.
At Voc of 50V, you will have about 10% margin before going over the Voltage limit of 60V max PV input Voltage. How cold does it get in your area?

 

[watchdoc]

Thoughts on over-paneling the 767 with a pair of these?
$320 each

BlueSun 550W (up to 663W Bifacial Gain)
ELECTRICAL PARAMETERS

Performance at STC (Power Tolerance 0 ~ +3%)

Maximum Power (Pmax/W) = 550W

Operating Voltage (Vmpp/V) = 41.96V

Operating Current (Impp/A) = 13.11A

Open-Circuit Voltage (Voc/V) = 49.92V

Short-Circuit Current (Isc/A) = 11.28A

Dimensions (32kg / 73lbs )

2285_1134_35mm

90 x 44.6 x 1.37 in

I looked at those from Signature Solar as well. Needs a lil more voltage and a lil less amperage to be a good match for 2 in parallel. The bifacial gain will help some but not enough to max out the Anker. Those panels are huge too. Are any of the big solar suppliers within driving distance of you? Santan, Signature, or CEDGreentech? So far, the only panels I've found that even have the potential to overpanel the Anker are the JJN 200watt 10bb panels.

 

[Trailpower]

You can only do 2p since 2s will exceed the max PV input Voltage, so the calculated power you will get is 41.96V x 20A = 839W.
At Voc of 50V, you will have about 10% margin before going over the Voltage limit of 60V max PV input Voltage. How cold does it get in your area?

-15F on a clear winter day. We're in the Utah mountains at about 6000ft.

 

[Trailpower]

I looked at those from Signature Solar as well. Needs a lil more voltage and a lil less amperage to be a good match for 2 in parallel. The bifacial gain will help some but not enough to max out the Anker. Those panels are huge too. Are any of the big solar suppliers within driving distance of you? Santan, Signature, or CEDGreentech? So far, the only panels I've found that even have the potential to overpanel the Anker are the JJN 200watt 10bb panels.

They are huge... I tried CEDGreentech, but they only had 400W Qcell panels in at the Utah location. Shipping in two panels from another location was going to be $700. Santan was about the same- $700 to ship two panels.

 

[watchdoc]

-15F on a clear winter day. We're in the Utah mountains at about 6000ft.

CEDGreentech has several locations in Utah. If you could find the Qcell 480 or 490's, they are cheap and you would be safe in very cold weather with their VOC and temperature compensation beta.

 

[watchdoc]

CEDGreentech has several locations in Utah. If you could find the Qcell 480 or 490's, they are cheap and you would be safe in very cold weather with their voltages.

I would just wait until they get something in stock that works better for a fixed install. $700 for shipping is crazy. Look at those JJN panels though. $180 each shipped if you buy six. I was really close to pulling the trigger on those but these 2 bifacial Qcell panels were half the price and I could pick them up locally.