RE: Noob here. LiPo battery charger??
any lipo charger capable of charging 4s should work, you might need a new adapter either 4mm banana to your battery connector, or deans to your battery connector.
the banana output is on the charger and you just swap around to what works with your lipo.
The clamp leads are for connecting to an automotive battery or some power supplies to power the charger.
Do you have a link to one of the chargers you seen, It may help as i'm confused slightly.