BATTERY EXCHANGE EUROP- USA

Me and my wife are actually cycling Singapore - China - Singapore on 2 normal travelling bikes on which we added a BAFANG BBS 02 500W 36V mid engine. Each bike has 2x17Ah batteries mounted in pararellel, which means about 1KW each. We carry them in our ortlieb panniers. We are now in Myanmar on our way back to Singapore, after cycling 7000km through SEA. End april we'll ship bikes and batteries back to Europe by boat.
In order to avoid shipping the batteries again to the American continent, where I would like to cycle 2 months in Mexico, I'm looking for somebody who can rent or lent similar battery setup. It can be 48V. In exchange I can lent my batteries for somebody who wants to travel in Europe.
Blog in FB "2 e-bos in Asia" and '2 hobos in Asia"