I just got myself a Rollei E 35 RE Potato Masher for free.

The battery no longer holds a charge and I am wondering if there are any replacement battery packs available.

Alternatively is it possible to modify it to run of a power supply safely.

I read somewhere that the flash is quite powerful and can illuminate a forest. So I am eager to try it out if it is not going to be too much effort.

If you are an expert and are knoweldgeable about this unit you can have it for price of shipping (from Germany). I just don't want it to go to waste.