There should be a drop-down box to choose which connector, unless deans was all they had in stock?Bummer they're not in stock now. They were when I bought them. Hopefully it's not too long a wait.
There wasn't an option when I purchased mine, just the deans. Didn't matter I just soldered on the xt90's that came with the truck. It's nice that it's offered now with so many arrma ' s running around. It's becoming a popular brand.
Some of them don't have the connector change drop down though and he said if it doesn't just to add it to the comments and they will change it.Under the price it says "available options" and under that it says "connector change" please select.
You have to click on the battery pic and it will take you to the description page.