Alternatives for DFRobot Solar Power Manager?

I have ordered a couple of these boards but after a month of waiting for delivery I thought I’d investigate some alternatives.
https://www.dfrobot.com/product-1712.html

Does anyone know of a similar board? Ideally one that also makes it easy to report on remaining battery level?
To do this DFRobot suggest purchasing an additional board…
https://www.dfrobot.com/product-1734.html

Some possible options so far…

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