Metz 45 chargers

[AgX]

I got two of them:

Typ 709
6.8V 400mA

Typ 729
7V 600mA


The only explanation I got is that Metz over time installed cells of higher capacity, which of course needed higher charging current.

 

[wiltw]

I got two of them:

Typ 709
6.8V 400mA

Typ 729
7V 600mA


The only explanation I got is that Metz over time installed cells of higher capacity, which of course needed higher charging current.

I can't help here...the adapter for the US market that I have from my 45 (purchased new) was the type 708.

Maybe the type 729 was for use with the P76 high performance battery?!

 

[AgX]

Good point, with the P76 being for the new LiMH-packs, but my chargers are much older.
Their transformer still designed for the old mains voltages from over 30years ago (110V/220V).

 

[wiltw]

I could only find photos of both on the web, with zero explanation of difference of function

• 709: 6.8V 400mA
• 729: 7.0V 600mA

I can only surmise that the 729 is able to bring a set of batteries to full charge 50% faster.
So either larger capacity cells, fully charged in same amount of time, or same capacity cells charged in 50% less time;
but charging voltage is not indicative of charging cells of a different chemistry (like NiMH)

 

[AgX]

Well, I looked up charging times. They differ indeed, but only a bit and other than one might think...

CT-1 4h
CT-5 5h

CL.-1 (Nicad.version) 5h

And the capacity of packs by number of flashes is the same.



One of those enigmas that appear looking through ones stuff.

 

[foc]

I have the Metz 45 CL4 and the charger is 970.
Output 4.8 - 9.6v 0.8A
The battery pack is NiMH.

 

[AgX]

You are too modern for me, I am still living in Nicad days.
Those Nicad chargers basically are just a transformer, at the cages there is a diode network, That's it. Your NiMH charger must got some microprocessor or such.

 

[wiltw]

Metz Flash Charger Metz 970 for NiMH Battery 76-56 & 45-56.
NiMH battery 45-56 For 45 CL 4 digital, 45 CL/CT 1, 3, 4, 5 (NiMH charger required!). The NiMH 45-56 battery allows photographers to shoot a minimum of 220 flashes at full power; a 175% increase from the previous NiCad 45-40 battery.

Metz 729 Charger for the NiCad Batteries of the 45 & 60 CT Series & the G15 & G16 Power Grips
NiCAD battery 45-40 for 45CT/CT 1, 3, 4, 5, 7.2V, 700mA