Cheaper battery for Yukon 500w ?


New Member
Hi guys,
I'm new to the forum. Nice to meet you all.
I was wondering if there are any cheaper alternatives for a spare 48v battery that comes with the Yukon voltbikes. 650 dollars is pretty expensive for a poor boy like me lol.
Preferably one that will fit right into the 'tray' that is already attached to the bike.

Many thanks if you can help!