Min recommended alkaline battery voltage on Petrel 2 EXT

[flymolo]

Hi Shearwater,

Apologies if this has been answered elsewhere, but is there a minimum recommended voltage for alkaline batteries when used in the Petrel 2 EXT? I understand that below a certain voltage they are more likely to leak and cause damage to the internals of the computer. I check my battery voltage prior to each diving day and notice a slight decline (usually about .01 or so) after several hours of diving, so I'm wondering when is the best time to swap it out.

Thanks!

 

[Bert van den Berg]

Under no load an alkaline battery voltage is going to be about 1.26V when discharged to 30% of capacity. Under a light load like your typical dive computer 1.20V would likely be a good time to replace the battery.

 

[davehicks]

It's better to use Photo Lithium cells if you are not using a rechargable battery. They last far longer and won't ever leak. I use these in my Petrel 2 EXT's and they last about 40 hours of diving.

 

[Macan]

Good success also with Eneloop batteries (NiMh). Cheap, easy to charge with a compact charger. I get around 35 hours with them.