Those Makita chargers are a little fancier than the Freud one.
That's one of the historical details I was going to mention. If you look at the charger on my 8402 (last photo) - Makita part number DC9711 - you'll see it is similar to the Freud one.
When Makita first introduced these drills they came with a fairly basic slow charger, probably the DC9000. I've attached a pic of one I found on the net. You can see this is very much like yours, but not identical, which is curious. Note that they are 9.6v only.
If you want to look at other similar chargers, do a google image search for Makita and part numbers like DC7000, DC7010, DC7100, DC9100, DC9700, DC9710, DC1201, DC1290, DC1470, DC1822. I think they are multi-voltage from the DC9700 onwards.
The DC1414F charger is a much newer design that handles 7.2v, 9.6v, 12v and 14.4v, and is a pulse-based fast charger. There's a total of 5 contacts, and some batteries have a larger keyway to indicate a different voltage which activates a switch in the charger.
In that style, I'm also aware of a DC1804.
The older chargers used a linear circuit with transformer (remember they date from the 1980s), but the newer ones use switched-mode supplies.
The interesting thing is that Makita changed to a "lump" style battery at the bottom of the handle (like most other cordless tools these days), but the bit on those that fits into the drill is the same shape and has the same contact arrangement as the older stick style batteries. So, despite the fact that the stick and lump batteries look totally different, they use the same chargers (providing that the charger can produce the right voltage).
The carry case on the 8402 is a much older style to the others. I used to own a 6095 that also had this style of case. I guess the bigger charger forced them to change the case design. There's at least one more style of plastic case. But as someone mentioned before, when the 6095 or its predecessor first came out, the case was metal.
Hope this is of some interest.
