I’ve been charging 2x18650 (2P) cell with this cheap module
but I need 7.2v for another project, I wonder if there is a similar module to charge 2S.
I see this on ebay, 2S1P-7-4V-18650-Holder-with-Battery-Build-in-PCM-Protection-Circuit-Module what do you think? can I give it just a 8.4v input?
Thanks in advance,