go to your local motor factors (or worst case motorists shop) and ask them for a good old-fashioned type connector - it depends what style of battery post you've got, but if its the round type, you can get a chunky one that drops over the post and has a hole through it with two fat screws so you can pop the stripped cable end through it and clamp it in place. Much more substantial than the original weedy ones on the T2, not sure how good the Mistral ones were but I assume being Jap original they were better hopefully!
But just be sure to tell them clearly what your battery terminals are like and what diameter they are if round. Shouldn't be very painful honestly!