The Ansmann 4 way charger has + and - 4mm power connections and JST balance sockets.
You will probably need something like this
http://www.futureworldmodels.com/aca...fo_VR1006.html
or
http://demonpowerproducts.co.uk/prod...wer-etc-p-3620
If you are using saddles, I believe you could charge 2 sets of saddles on a 4 way charger without using a balancer anyway. Charge each cell (half of the saddle pack) separately on each port. Just make sure you have the charger set to 3.7v/1s lipo not 7.4v/2s!!