I have a solar panel I took out of a solar charger for mobile devices that i bought online. I believe the packaging says it's output is 5V & 2.1A.
I have a setup with 1 of those panels which charges 2x18650 batteries (3.7V) in series, which powers an arduino. I have tested the setup to be autonomous and it works for about 1 week or so. Id like to increase the charging power to the batteries by connecting the 2nd solar panel in parallel in order to get 5V, 4A. But I noticed my battery charging module is this one:
https://www.aliexpress.com/item/327...earchweb0_0,searchweb201602_,searchweb201603_
Which states 5V/1A. So Im guessing this means no matter how powerful a panel, the charging module will only let 1A thru, correct?
I have a setup with 1 of those panels which charges 2x18650 batteries (3.7V) in series, which powers an arduino. I have tested the setup to be autonomous and it works for about 1 week or so. Id like to increase the charging power to the batteries by connecting the 2nd solar panel in parallel in order to get 5V, 4A. But I noticed my battery charging module is this one:
https://www.aliexpress.com/item/327...earchweb0_0,searchweb201602_,searchweb201603_
Which states 5V/1A. So Im guessing this means no matter how powerful a panel, the charging module will only let 1A thru, correct?