My charger came with a stack of leads. One is the charger to a strange T connector and then many leads to connect to that including a 5.5mm bullet lead. I was reluctant to remove the bullet connectors from the battery as someone had just bought the same cell that failed quickly. I wanted to be sure my cell was OK before I removed the bullets in case there was an issue claiming on the warranty with the bullets removed. The next cell I bought had bare leads.
I standardised on Tyton T connectors a long time back when everyone was getting the hots for Power Poles. Power Poles were very expensive and I’d used Tyton T’s in my job so I knew how they performed etc. and had a bag of them for free! There were enough leads provided with the charger that I could cut off connectors I’d never use and fit Tyton T’s and also I made a 5.5mm bullet to Tyton T. It took an hour or so to make the adapters I needed out of what came with the charger. It was a bit annoying that I couldn’t immediately play with my new toys.
You can probably buy the right lead from HobbyKing. Or eBay. Or buy the bits and make your own. Just remember the amount of current you can draw in a fault condition so if you make your own, make sure it cannot short out in normal use, or more importantly abnormal use when you are not thinking!