Lantern battery type

[AndyPRK]

what was the number of them large batteries that were used in roadwork yellow beacons

They had 2 spring contacts

 

[DetlefSchmitz]

6-volt Lantern (Spring)
Lantern
6 V
Spring top
MN908
996 or PJ996
Energizer 529

 

[AndyPRK]

Do they make cases so you can fit AA ?

I guess not !

 

[DetlefSchmitz]

Probably not!

 

[scbk]

You used to be able to get a rechargeable version of the 6v lantern batteries, it was about £20 though


Infact this was the one I remember, with the plug on the side
https://www.tlc-direct.co.uk/Products/UK300.html

 

[JohnD]

With LED "bulbs" and lithium batteries, you can get equal or better light output and battery life from a smaller, lighter, cheaper unit now.

 

[scbk]

With LED "bulbs" and lithium batteries, you can get equal or better light output and battery life from a smaller, lighter, cheaper unit now.

Yes, for a torch, but they still seem to be used in most roadworks lights, I assume as they're cheap and cheerful.
I've always wondered, do they go round replacing the batteries in them once they're completely flat, or routinely change them whether they need it or not

 

[SUNRAY]

Do they make cases so you can fit AA ?

I guess not !

I had one which took 'D' cells.

 

[mattylad]

if you open those batteries up you will find that there is several D cells (I think) inside.
screwfix do them still.
https://www.screwfix.com/p/diall-4r...-_-electrical-_-6vbatteries&_requestid=108388

 

[AndyPRK]

My father has a torch that will take either 8 D cells or a 996 I think.

6v bulb.

8x1.5=12v

 

[JBR]

My father has a torch that will take either 8 D cells or a 996 I think.

6v bulb.

8x1.5=12v

Or two lots of 4, wired in parallel, of course.

 

[AndyPRK]

Don’t they discharge themselves like that?

 

[JohnW2]

Don’t they discharge themselves like that?

Only if there are appreciable differences between the 'conditions' of batteries in the various series sets. Series/Parallel combinations of batteries are not uncommon.

One way of avoiding the potential problem (at the cost of the voltage drop in the diode) is to have the 'series sets' paralleled via diodes (one diode per series set) - so that no series set can discharge through any other.

Kind Regards, John

 

[JohnD]

Yes, for a torch, but they still seem to be used in most roadworks lights, I assume as they're cheap and cheerful.

I think more likely because the battery won't fit much else, so not worth stealing.

 

[AndyPRK]

I doubt said torch has diodes, but thanks for the tip