Need battery with Rosenberg magnetic connector

[max_volt]

Here is the Rosenberger but you might be better off converting it to a more standardized connector

[Ivan]

Hello i becoming crazy looking where to buy an ebike battery with Rosenberg magnetic connector male. I see a lot of places to buy an external cheap battery but no one comes with a hub for the connector and even if they woul have it(which is impossible to know reading the specs on webs) i can't find a male male Rosenberg connector. It is for my focus jam2 ebike . The portable extranattery they sell have all that i want but with only 386 w and expensive and i would like more. Thank you for your help.