Pallet Jack Hydraulic Pump ? Volts works

Description

Got this off a junk pallet jack for a ATV lift project.  Ended up using a hand pump.  Hooked this up to a 12V battery and it pumped all the fluid out of the resvoir.  Think it is 24V but can find no marking on it to check.  Unable to find any of other numbers as well.  Being sold as is....  Ask all questions before bidding. Happy to check anythign you like.  Looking for a quick sale.