Looking at the picture, I think what you need is one of these:
https://www.ebay.co.uk/itm/JST-XH-Ma...r=540416152308
As the description states, its commonly used for charging 4S lipos so you should be able to source it locally?

I'm guessing that the Mako was intentionally designed to dispense with the Tamiya connector so that you can share the apple with other tanks and not have to buy an additional base. The Tamiya micro connector is not easy to find preassembled in my experience, and crimping those tiny pins yourself is an exercise in frustration to say the least - it makes much more sense to use a common off the shelf lead, jam one end into a blob of miliput under the turret hatch, and plug the other end into the Mako...

Hope this helps.