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Water head/ pressure wise 15m (~45 feet) isn't that much and more or less any submersible well-pump can do that. The question is rather how much water you want to pump (and your well can supply) and according to that you can select a pump with the appropriate pump curve (which shows head vs. quantity pumped). According to the specifications of the choosen pump you need to select an appropriate energy supply/battery.

On a side note: if you have sufficient water storage it might be worth looking into a pump with an inverter that runs directly of the variable solar power, something like this: https://www.mro-tek.com/energy_products/pump.html (random internet link, no endorsement of the specific product). These are a bit more expensive, but you can save on the longer term battery maintenance costs.