rolleigraphy.org

Link to Rolleigraphy Photo Gallery

Home > Addenda > Power Supply

© 1998-2021 Ferdi Stutterheim

Page Index

  1. Introduction
  2. Power supply systems
  3. System batteries
  4. Battery chargers
  5. Power interface
  6. Notes
  7. References

Introduction

While the SL 66 is a completely mechanical camera - except for the exposure meter - the SLX and system boardSystem 6000 cameras are completely battery dependent. It has an electronic syetem board that controls all functions. Film transport is motorised and even shutter and aperture are driven by linear motors. The battery is rechargeable and contains standard cells. Originally Sanyo Nickel-Cadmium (NiCad) cells. In later years Nickel Metal Hydride (NiMH) cells. Next to the battery other power supply systems were offered. The camera’s can be run from mains in the studio. On the road the system batteries can be charged from the car battery, etc. A power interface with exactly the same sizes replaces the battery in the camera and connects to external power supply components.

Power supply systems

System components

Component Identity
Number
Particulars
System battery 39 715 Rechargeable battery 1.25 A with active and spare fuses.
The NiCad cells are routinely replaced for NiMH cells nowadays.
External battery connector 98 200 Intended for using the system battery away from the camera,
near the human body in case of cold weather.
Battery chargers Several versions G, N, C, D. Charges the System battery (and some
can feed the Power interface).
Power Interface 30 017 Replaces the System battery in the camera and connects to a
number of external power supplies. Needs 12 - 18 V ⎓, at least
200 mA.
Power supply unit 30 019 Mains converter to 12 V ⎓. Intended to feed the Power interface.
Connector cable 91 187 Connects a car cigarette lighter socket with the Power interface
Battery box 30 036 Box for 5 × 3 V Lithium cells, type DL 123A. With cable.
Intended to feed the Power interface.
Einhell mobile energy station,
with connector cable
12 720
91 187
Specialist third party product.

System batteries

NiCad battery

The Rolleiflex SLX was supplied with a NiCad battery. In those days state of the art. A downside of NiCads is the so called ‘memory effect’. It means they should be recharged only when empty state is indicated by the camera. Recharging a partly discharged battery will eventually lead to a diminished capacity. Of course that is rather un practical. Most people prefer to start with a fully charged battery. That problem was enhanced by rather primitive chargers (G and N chargers) that lacked a discharge circuit to fully discharge before charging. Quite some users switched to third party chargers like the Maha, now discontinued.

I understand modern NiCad cells are of a higher capacity now and do not suffer from memory.

NiMH batteries

While the factory sticked to NiCad, supposedly better suited for strong currents drawn by the camera motors, users switched to NiMH when cells had to be replaced. NiMH cells have no memory effect and modern cells have a higher capacity than original NiCads. The Maha charger could fully charge NiMH batteries. The Rollei chargers G, N and later C are not designed to charge NiMH batteries. The Maha is designed charging for NiMH batteries.

Only in 2019 offered the factory a Charger D fit for NiMH batteries.

Fuses

The SLX and System 6000 camera’s are protected against overcurrent by glass fuses. The battery housing contains a spare fuse too. The fuse that is clearly visible is the active one. The spare fuse is hidden between the cells and can accessed by pulling a plastic tab. Camera models don’t use the same type of fuse. The type of fuse is printed on the original battery. When buying (used) batteries check active and spare fuse. Try using the proper fuse for your camera. When the rated current IN is too low, the fuse may blow with normal use. A too highly rated fuse may not blow at all or blow too late in case of a fault and cause damage to the electronics or components like the film transport motor and the linear motors for aperture and shutter.

Glass fuses

System 6000
models
IEC 60127
Symbol
IN
(Rated
current)
UN
(Rated
voltage)
Designation
German English
6006 M 0.8 A 250 V mittelträge normal
6006 model 2
6003 SRC 1000
6008 prof
6008 prof SRC 1000
1 A 250 V
6001 prof
6003 prof
6008 i
6008 E
6008 i2
6008 AF
T 1.25 A 250 V träge slow acting

Battery chargers

Charger G

This is the charger of the SLX era. It is the simplest charger of them all. I have never used it and I never see one offered. The Charger G is unfit for charging NiMH batteries According to Mr Dieter Paepke of Paepke Fototechnik. This one is completely obsolete.

Charger N

I purchased my 6008i when it was a currant model. It came with a NiCad battery and a Charger N. Charger N is more sophisticated with “trickle charge”. There is no risk of over-charging. When the battery is fully charged the charger reverts to pulses rather than a continuous current. The charger works well with NiCads but the memory effect is clearly present and quite annoying especially when the camera is not in heavy use. I replaced it for the Charger C a soon as it was offered.

The Charger N knows three cases for shutting down. Case 1 is the normal situation: battery fully charged. Case 2 is after 1 hour of charging. Normally charging is completed within 1 hour. Case 3 is battery over-heated. This can happen with faulty cells.

Both my batteries are fitted with NiMH cells for years now. The Charger N is still my favourite Rollei charger for charging NiMH batteries. It is rather straight forward with no frills and charges the battery it was not designed for up to 95% according to Mr Paepke to whom I turn to to replace cells. The 95% charge is reached when the charger shuts off after 1 hour. It is possible to re-start charging by removing the battery and replacing after a minute or so and charge for another 15 minutes. The problem is with NiMH cells the charger does not shut down when the state of fully charged is reached. I also use the Maha charger occasionally. Charging NiMH batteries is in one session and it stops when fully charged.

Charger C

The Charger C performs a status check on the battery cells before charging and also has the discharge option. The C model from 2005 is still the preferred choice for NiCad cells when it comes to “memory’ behaviour. Never the less I do not like it very much. The status check triggers control lights. I have to check the manual for their meaning all the time (red blinking = discharge, red = charging, green = fully charged, yellow = error). Quite often the thing finds a fault and refuses to charge a NiCad. I suppose there really is some fault but the Charger N happily charges the disqualified batteries anyway.

When charging a battery with NiMH cells the discharge circuit should not be used. The wole point is NiMH cells can be charged when only partly discharged. On the contrary they should not be deeply discharged. I feel that is not a real problem with System 6000 camera»s because the system will show “charge” and shuts down before that happens. The fancy control lights are useless with NiMH cells.

I feel this charger causes more (small) problems than it solves.

Charger D

This is the most recent Rollei charger. On the market from 2019. I do not own one but it looks very promissing. A specifications sheet is not available from the factory website. Find more details at Rolleiflex.us.

Battery chargers

Particulars Charger G Charger N Charger C Charger D
Identity Number 64 899 98 451
Input Mains Voltage 100-240 V 100-250 V
Cycles 50-60 Hz 50-60 Hz
Mains to unit connection Cable2 Cable Converter3 Converter
Auxillary4 Voltage No 12 V ⎓ No
Output (to Power interface) No 12 V ⎓
0.5 A
No
Rapid charging No Yes Yes Yes
Trickle charge after Rapid charging No Yes Yes Yes
Optional discharge before charging No No Yes No
Designed for charging battery with NiCad cells NiCad cells NiCad cells NiMH cells
Capable of charging battery with NiMH cells No With
limitations
With
limitations
Yes
Powered by car battery No Yes Yes5

Power interface

The Power Interface offers power supply options for camera’s of the Rolleiflex 6000 System, allowing a wide variety of power sources to be used instead of the battery. This greatly facilitates use of the camera’s both in the studio and on location.

The Power Interface is the same size as the system battery and takes the latter’s place in the battery compartment of Rolleiflex cameras. It connects to a variety of power sources, such as the Rollei charger from the 6000 System, the Rollei 12V power-supply unit, the Rollei battery box for lithium batteries, the Mobile Power Station by Einhell or a car battery connector, to mention just a few.

The Power Interface is designed for 12 – 18 V ⎓ with a minimum of 200 mA.

Notes

[1]
Back
[2]
The unit itself is laid out for mains electricity. A converter is part of the unit and the cable is a standard mains one. Back
[3]
The unit itself is laid out for low tension (15 - 18 V ⎓ min. 10 W) and is fed by an external converter. Back
[4]
Only the Charger N has a 12 V ⎓ auxiliary input next to mains. Back
[5]
The Charger C may also be run from a 12 V car battery, using the cigarette lighter socket. In this case, charging time will be noticeably longer due to the lower charging voltage. I guess no user ever bothered with charging from the car battery. I own two original Rollei cables of different chargers and neither makes contact with the chargers. The central pin in the socket of the charger is far too thin for making contact with the connector of the cable. It is not the right connector. Back

References