Hi Paul,
Sorry mate, didn't see your post until now.
To answer your question the FMS Cessna 182 v2 comes stock with a 2200mah 3s battery and charger. You can but a slightly larger battery in, but it is designed to balance perfectly with a 2200mah 3s.
As for chargers we highly recommend always charging a LiPo battery with suitable balance charger. The included charger is very basic - upgrading to something like a B6 once you get a few different battery packs is the best way to go.
A multi-charger usually means that you can charge many different types or chemistry of batteries e.g. LiPo, NiMh, NiCd, LiFe etc. You can usually only charge one battery at a time (you can charge more with parallel or series charging but only 1 at a time is advised to begin with).
The Cessna182 from FMS we sell is RTF - it comes with everything included.
We also have a Freewing Piper Cub trainer package in stock now if you are interested in a different looking trainer aircraft.
Shoot us an email via the contact us page if you have more questions (include your mobile number and we'll give you a call back

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