Uneven battery drain on Orcatorch D620

[Gyula Fora]

On my last dive I have noticed that the runtime of my D620 light dropped significantly. It is now only about 1 hour and 10 minutes on full power (instead of the original 2 hours+). I have purchased this light a few months ago and have used it about 20-30 times.

What I noticed after doing a test run at home is that the batteries drain unevenly. When I take the batteries out of the lamp at the end (when the light turns off), 3 of them are almost completely discharged, and 1 is almost on full capacity.

Any idea what the problem is and what to do to resolve it?

 

[lucca brassi]

maybe is problem charger , second battery chemistry is in bad condition replace batteries

 

[Gyula Fora]

After experimenting with it at home, it seems like the canister itself is broken, not the batteries. Maybe there is some contact error with the batteries.

I wonder if it should be possible to replace the canister itself, to a different maybe larger one from another manufacturer. I dont know if the cord connection to the canister is standardized.

 

[lucca brassi]

Akkukotelo or Akkukotelo E/O-cordilla 75Wh