What is 12V pump performance when the voltage...

Question

I have a battery backed up sump pump system that is a few years old now. As nearly as I can tell, it is a 12Volt pump with a model numbe of FP1800DCC. It may be 1300DCC.

Recently the cord on the float switch wore through to the point that the pump ran continuously and drained the battery. Now that the battery has been recharged the pump does not seem to have the power to lift the water the 10 feet that it needs to in order to do any good.

Is there a recommended way of resetting and/or checking the health of the pump. Do you have any good suggestions for me before I try to replace the pump/switch. Where can I purchase relevant replacement parts?