Recently had an addition put onto my house, new part has a basement which has a sump pump. But doesn’t have a battery backup.
Is it possible to add a backup pump system like this 
? In the same well thing or do I have to replace the whole pump for one like this 
which looks like a 2 in one?
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Should be able to add a battery backup.
And if you can swing it, I’d honestly throw another small pump in there for redundancy.
