Question on battery life of Sand Shark...

[fwcrawford]

I'm still on the batteries that came with my detector and have way more than the estimated battery life time on my machine and was wondering how long these things last?
I think the manual states between 10 to 20 hours of life.
When I do a battery check while searching, I am still getting about 7 beeps.. ( I can't remember how many beeps I got with fresh batteries).
I have been running mine at the preset location on the pulse width, and have not adjusted it any higher...how much depth do you gain by setting it up higher and how much does if effect battery life?
I have only been searching fresh water lakes that do not have much sand and going deeper would end up in the clay bottom,
so I don't see the need to set the pulse width higher for this.
I'm sure when I get to the saltwater beaches I will experiment with higher settings to see how it effects depth and battery life, but right now I am just curious.
Thanks in advance for any responses,
Felix

 

[tvr]

Felix,
I get a good 20 hours out of a set. I normally run the pulse width about half way between the preset and full. Have run at preset and at full and have not observed a large increase in depth or a large decrease in battery life.

I run volume full and adjust threshold to just audible.

Depending on the beach I can be as much as an hour's walk to get back to where I can change batteries. With the Sand Shark I change batteries at 5 beeps. That gives me plenty of margin so that any time I am changing the batteries I am inside in a clean environment and am not risking getting any sand under the O ring, nor do I risk running the batteries dead when out hunting.

With the Tejon and Cibola, I normally run them down to 2 beeps. If they they are getting low at the start of a hunt, I carry a change of batteries into the field and will change them mid-hunt if I need to. The Sand Shark at the beach is a different environment.

I think a new set of alkaline batteries gets 9 beeps in mine.
Cheers,
tvr

 

[Digger 45]

I run rechargeable Sanyo batteries and also run the width a little past center and get about 40 hrs before recharging. High volume and amazed how long the battery life is.

 

[fwcrawford]

n/t

 

[rjsupersonic]

I seem to get just at 20 Hrs. on mine