BOSCH Ni-Cd 12V How should the battery terminals be connected?

[Gianluca]

Thanks for this explanation, so I deduce that the size of the resistance also counts .... That is, if the manufacturer provides a 1/4 watt resistor this cannot be replaced by a similar 1/8 watt right?

[Kiriakos GR]

Thanks for this explanation, so I deduce that the size of the resistance also counts .... That is, if the manufacturer provides a 1/4 watt resistor this cannot be replaced by a similar 1/8 watt right?

In theory ... there is one identical resistance at the charger PCB.
In theory ... detection is made by the two resistors acting as resistance divider (both they are set in parallel mode)  and as such their total value will become half.
In theory ...  the smart IC will get this compliance information and start charging.

In your case, you have the smallest available charger, and there is no clear answers of what it does apply for it or not.
If the charger it does recognize the battery pack and charging it, then do not buy any resistors.   
 

[Gianluca]

Thanks a lot for the explanation, I learned a lot, I will do as you suggest.

[Gianluca]

Good morning, I'm reopening this discussion because I would like to know if these complete pieces are available on the market. Thanks

[Kiriakos GR]

Such battery pack connectors, they are not a regular spare part.

Your best bet, is to buy a used genuine battery pack from eBay, and to extract any parts that you need.
Your other option is to buy a Chinese clone (assembled working) battery pack.

This design of battery pack and charger they are both discontinued since 2013. 

 

[Gianluca]

Thanks Kiriakos,

Too bad I would have liked to recover a casing to have an extra battery pack.

25 years the drill still works.

[Kiriakos GR]

Thanks Kiriakos,

Too bad I would have liked to recover a casing to have an extra battery pack.

25 years the drill still works.

Most models of BOSCH tools, European production of 1995 - 2000, they are almost immortal.
At 1996 I got my own tool as new, this packaged with a slow charger / 9 Volts model.
Later own I got from Germany as used, the better BOSCH charger.
At 2017 I got as used a similar BOSCH drill tool from Germany, this had two dead battery packs.
Then I got NICD battery pack for MAKITA (cells inside in compatible shape), and use the cells at my own battery pack.

And I did all these moves, because I am in denial to throw away one well build tool.     
This is of how I earned all this knowledge, by buying and studying the technology in use.

My BOSCH SR 9.6E cordless drill got a second life end of 2013
https://www.ittsb.eu/forum/index.php?topic=708.0

New Ni-CD drill battery Vinteky / tiggopower : Capacity tests - Mini Review
https://www.ittsb.eu/forum/index.php?topic=1384.0

History review of Bosch Nickel-Cadmium (Ni-CD) AL60 & AL60 DV chargers
https://www.ittsb.eu/forum/index.php?topic=1385.0

[Gianluca]

I think exactly the same way about the fact that if a tool is good it should not be thrown away.
I mounted a Milwaukee chuck on mine and I can use it as a drill, PSR12-VE.