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diy solar

Limiting solar panels to avoid over load of Anker 767.

HandyRandysHH

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Feb 7, 2023
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NRH, TX
Please tell me if I'm ignorant but I am planning on mounting 2 renogy rsp550d-144 panels (bought new at auction Cheap) and I am thinking of buying an Anker 767 and 760 to avoid having to buy all the stuff to do on board batteries and have the system available when not traveling.
the main problem I see is that I exceed the max input to the Anker.

input 32-60V 20A

Panel Output
41.97V 13.11A each

is there a way to wire it that i can use both panels but govern it to not over load the Anker?
 

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You can only do 2p (two in parallel) due to the Voc of the panel and the max PV input Voltage of the Anker, so with 2p setup you will get 41.97V x 20A = 839W (in real world will be less) even though the 2p can deliver 13.11 x 2 = 26.22A but due to the 20A input current limit of the Anker, the Anker will only allow to draw up to 20A.
 
You can only do 2p (two in parallel) due to the Voc of the panel and the max PV input Voltage of the Anker, so with 2p setup you will get 41.97V x 20A = 839W (in real world will be less) even though the 2p can deliver 13.11 x 2 = 26.22A but due to the 20A input current limit of the Anker, the Anker will only allow to draw up to 20A.
On Edit- Never mind, I went and reread the specs and there is a 20 Amp limit on the solar input.

It's not clear to me that there is a 20 Amp limit on the input. I thought it was 1,000 Watts
max for the solar input, without regards to Amps, as long as you stayed within the voltage limits.
 
It's worth mentioning that Ankers 531 portable panel is rated at 57.6V at 25C. This leaves very little headroom for cold weather voltage spike. I'm gonna try a pair of Qcell 480 watt bifacial panels (525 with bifacial gain) to see how much power I can get into the Anker 767.
 
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