I'm sorry, I don't know that there is one. The link I provided is sent from China and the companies or at least their names change constantly. I'm not sure why they ship to the U.S. for $5 and Chile is 20 times more expensive other than it may have something to do with container space minimums. Shipping charges can go up and down. It may just be a matter of keeping an eye on aliexpress. Apparently, the battery for the Boyue Mars is pretty standard or was for 7-8 inch tablets. You might try a search matching voltage and dimensions and some other choices with better shipping will turn up. Either that or if you know someone coming to Chile who's willing to bring it with them.
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