Gossen luna pro battery replacement??

[MartinP]

I have been using the Gossen adapter, with the appropriate silver cells, for years. Cheap and simple and guaranteed. Last time, the meter came back from calibration at Gossen with a certificate showing no variation greater than 1/8 stop anywhere in both ranges, which is better than I will ever need, so I think the official adapter works. Unfortunately, Gossen have since stopped servicing the Luna Pro 3, but never mind - calibration is still easy to arrange, so long as nothing breaks.

[blueribbontea]

Zinc/Air cells don't last long, once they are activated. Mercury cells lasted for years in most cameras or light meters, Z/A cells dry up quickly.

Yeah; I had to replace mine after a year!