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What voltage do you replace your 9 volt batteries in your detector?
- Thread starter wishfish
- Start date
wishfish
New member
Yes, but when your battery is outputting lower voltage it will affect the performance of the detector. So at what voltage does it start noticeable effecting things, that’s what I’m asking
How would that work for a pinpointer that runs on aa batteries at 3 volts ? sube
What ever the voltage regulator is set at . sube
still looking 52
Well-known member
My F5 detector takes two 9 volt batteries, they usually last at least 40 hours of detecting, I replace them when the battery signal starts modulating.
The signal will stay steady on the screen and moves on slowly to the left just like your gas gauge does in your car until it gets low and then it starts modulating.
The signal will stay steady on the screen and moves on slowly to the left just like your gas gauge does in your car until it gets low and then it starts modulating.
Interesting topic and my opinion maybe just mine, but on my Tesoro's and my uni probe pin pointer that take 9 volt battery to operate I tried rechargeable 9 volt batteries and found that they only put out 8.5 or something like that, but the Uni probe would just chatter and be unstable with the rechargeable 9 volt battery. I knew when the 9 volt alkaline when used a bit did the same thing, but would still work in the detectors, so with the pin pointer it des need the full 9 volt to operate, On the 9 volt detectors the 8 volt would run the detector for a while and did try some 9.4 rechargeable, but they were too long ad wouldn't fit in the battery holder, so I only use the 9 volt alkaline . That's my experience with my 9 volt batteries.
Rick
Rick
fwcrawford
Well-known member
On my Tesoro detector which takes one 9 volt battery, the instructions state to replace it when the battery check only beeps about 1-2 times… not sure what the battery level is at that point.
On my Pro Pointer, I actually checked the battery level after my pinponter started acting up and was quite surprised it still showed about 8 volts.
Many detectors give a warning signal when the battery level is low, but no idea at level the battery is when it gets to that point.
On my Pro Pointer, I actually checked the battery level after my pinponter started acting up and was quite surprised it still showed about 8 volts.
Many detectors give a warning signal when the battery level is low, but no idea at level the battery is when it gets to that point.
Two things about alkaline is their voltage drops off pretty quick, very quickly on high draw items like cameras vs rechargeables that may start lower but maintain that voltage much longer and again especially on high draw items. Second is alkalines leak. 
My rechargeable 9Vs are lithium. I’m not sure of the voltage but I haven’t had any issues using them in PPs or detectors. I need to charge them so I’ll check the voltage afterwards.
My rechargeable 9Vs are lithium. I’m not sure of the voltage but I haven’t had any issues using them in PPs or detectors. I need to charge them so I’ll check the voltage afterwards.
I have a bunch of Eneloop AAs NiMH and a load of NiMH 9v which after charge they are not 9v.Two things about alkaline is their voltage drops off pretty quick, very quickly on high draw items like cameras vs rechargeables that may start lower but maintain that voltage much longer and again especially on high draw items. Second is alkalines leak.
My rechargeable 9Vs are lithium. I’m not sure of the voltage but I haven’t had any issues using them in PPs or detectors. I need to charge them so I’ll check the voltage afterwards.
Last year I bought a set of AA Lithium rechargeable's. In one of my radio's it does work but it also creates a hum/buzz to annoying to use. Might be because the one's I bought they charge via the charge cord plugging into battery instead of charging the batteries in a separate charger - might be the circuitry within the battery.
I have saved 2 brands of 9v rechargeable's with chargers in my Amazon cart. They say charged the voltage is 8.2 to 8.4 volts, so that right there is better than the NiMH lower voltage.
If I get 9V rechargeable Lithium's, I think it might be better to get the one's that need a separate charger vs plugging a cable directly into the battery - based on my AA rechargeable Lithium AAs causing noise in the tested radio (might be ok in other radios) - regards to different detectors I don't know if the built-in charging circuitry within the battery could cause an issue.
I'll probably still order rechargeable 9V lithium's on my next order (with chargers) to try - Some of y detectors take the 9V so might as well go for the higher voltage compared to the lower voltage NiMh.
Alkaline's - no thanks...
4 (?) year old rechargeable lithium ion 9V batteries fresh off charger are putting out 8.38-8.4 volts.
EBL brand. 8 are still good out of the ten I bought. One of two chargers died after a year or two.
For what it’s worth I Air tested my Mohave:
Started with 6.5V - had long battery test tone,
Tried 9.15V and they both had the same detection distance.
I had other batteries with voltage between them but there wasn’t any reason to test them.
EBL brand. 8 are still good out of the ten I bought. One of two chargers died after a year or two.
For what it’s worth I Air tested my Mohave:
Started with 6.5V - had long battery test tone,
Tried 9.15V and they both had the same detection distance.
I had other batteries with voltage between them but there wasn’t any reason to test them.
wishfish
New member
This is exactly the answer I was looking for. Thanks
Good to hear they work for you, and maybe they are different than the ones I have tried. I tried them around 8 or 9 years ago and they sure didn't workout for me, the biggest problem was with my UniProbe as it would not run smooth unless they were freshly charged as they got very erratic with in 2 or 3 minutes and had to switch to my alkaline I carried with me and then it rans nice again.Two things about alkaline is their voltage drops off pretty quick, very quickly on high draw items like cameras vs rechargeables that may start lower but maintain that voltage much longer and again especially on high draw items. Second is alkalines leak.
My rechargeable 9Vs are lithium. I’m not sure of the voltage but I haven’t had any issues using them in PPs or detectors. I need to charge them so I’ll check the voltage afterwards.
So I am glad you found some that worked for you as those I tried sure didn't and tried several different one. I also found that the AA rechargeable didn't work on the Minelab Sovereign as they did need the 12 volt so the rechargeable 10 cells instead of the 8 many had tried in the alkaline batter pack that came with the Sovereigns , some worked for a little while and then gave a low battery alert.
Good luck
Rick