Kenwood THF-6A Drop-in Rapid charger available exclusively at W&WManufacturing.
 

*** Their is only one company that I know of* (because I
bought 2 Drop-in Kenwood TH-F6A charges from them
at the 2003 Dayton Hamvention) that makes a totally
DROP IN RAPID charger for the Kenwood TH-F6A HT.
This unit uses their special batteries, which have been modified
with charging contacts on the batteries back/bottom side; enabling
the unit to be charged with the batteries attached to the back of the
TH-F6A radio, by just dropping the HT in.

*** The drop-in charger is called a MASTERCHARGER M/N IL,
the batteries are 1800mAh Li-ion 7.4V M/N PB-42L.* This unit
is manufactured by a company called:
W&W Manufacturing.
800 South Broadway,
Hicksville, NY. 11801-5017
(800) 221-0732.
http://www.ww-manufacturing.com

*** They sell a combo Drop-in Charger unit, which includes
a 1800mAh battery for $99.** Extra 1800mAh batteries
are ~$50 each.

*** As for the batteries that are, NOT TRULY DROP-IN, at
WWW.BATTERIESAMERICA.COM - AKA Mr. Nicad.
If this is that snub, arrogant, A'Hole; that sells at our local
hamfests, from a setup of wheeled table carts, covered with
pumpkin orange table cloths.* I personally wouldn't buy SH'T
from him, after the assitude he was dishing out, at our last
hamfest.* A word of advice Mr. Old Battery Man.* When your
in the business of selling, it only makes sense to be nice to the
people, potential customers, that you are trying to sell to.* If
your not selling many batteries at the hamfests, maybe you should
look at your current pricing, and adjust it down to meet the current
market; instead of getting all ****y because the other battery sales
vendors are beating you down with a stick.* Or here's a better idea,
just don't bother showing up at any of our Chicago area hamfests
anymore.* I for one won't miss you.

Gregory (K9OY)