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rechargeable batteries: advice wanted
- Thread starter dfmike
- Start date
sprchng
Well-known member
If you buy the good ones like the latest generation of eneloop AAs , you will wonder why you didn't do it sooner. They're superb and cost efficient and the recharge time continues to drop. Get the highest mAh ones you can find. If you're talking about 9v , don't bother with NiMh go straight for the lithium ones. They might be 4 bucks a piece but the run time is astonishing. 600 mAh batteries by EBL seem to run for 6 months in a Garrett pinpointer and I hunt a little most every day. I stick one in my pouch for a backup in case I need it during a hunt and I'm always wondering if the spare will have a charge when I finally need it...when dies they die fast. Finally happened the other day and I've been running on that back up now for about 2 months.
Snap On Man
Member
I use Tenergy 9 volts in my F2. I see no performance difference in them and regular batteries. As for as length of time hunting I am not sure I can't find enough time to hunt. I hope to change that because I would like to invest in a F5.
dfmike
Well-known member
sprchng said:If you buy the good ones like the latest generation of eneloop AAs , you will wonder why you didn't do it sooner. They're superb and cost efficient and the recharge time continues to drop. Get the highest mAh ones you can find. If you're talking about 9v , don't bother with NiMh go straight for the lithium ones. They might be 4 bucks a piece but the run time is astonishing. 600 mAh batteries by EBL seem to run for 6 months in a Garrett pinpointer and I hunt a little most every day. I stick one in my pouch for a backup in case I need it during a hunt and I'm always wondering if the spare will have a charge when I finally need it...when dies they die fast. Finally happened the other day and I've been running on that back up now for about 2 months.
I'm using 2 X 9 volts in the F5. They last a long time but I'd rather go rechargeable and not have to wait for sales of alkaline batteries all the time. So I should go Lithium then I guess. The Makro pointer has a 9 volt also but it lasts so long that I see no point in putting a rechargeable in there. I've had the Makro for a year and it's used up only 1 battery so far !
Thanks everyone.
MarkCZ
Well-known member
For my money the newer rechargeable's are the only way to go.
For the 9 volts I've found these to be GREAT! (that's not to say there isn't some better)
I get these at batteryjunction dot com
In this day and time I only buy the LSD (low self discharge) types!!!!!
Also, you don't have to pay a lot for a charger if you do some online shopping.
Mark
For the 9 volts I've found these to be GREAT! (that's not to say there isn't some better)
I get these at batteryjunction dot com
In this day and time I only buy the LSD (low self discharge) types!!!!!
Also, you don't have to pay a lot for a charger if you do some online shopping.
Mark
sprchng
Well-known member
dfmike said:sprchng said:If you buy the good ones like the latest generation of eneloop AAs , you will wonder why you didn't do it sooner. They're superb and cost efficient and the recharge time continues to drop. Get the highest mAh ones you can find. If you're talking about 9v , don't bother with NiMh go straight for the lithium ones. They might be 4 bucks a piece but the run time is astonishing. 600 mAh batteries by EBL seem to run for 6 months in a Garrett pinpointer and I hunt a little most every day. I stick one in my pouch for a backup in case I need it during a hunt and I'm always wondering if the spare will have a charge when I finally need it...when dies they die fast. Finally happened the other day and I've been running on that back up now for about 2 months.
I'm using 2 X 9 volts in the F5. They last a long time but I'd rather go rechargeable and not have to wait for sales of alkaline batteries all the time. So I should go Lithium then I guess. The Makro pointer has a 9 volt also but it lasts so long that I see no point in putting a rechargeable in there. I've had the Makro for a year and it's used up only 1 battery so far !
Thanks everyone.
Just like the RNB batteries are light years ahead of the factory rechargables the Lithium 9v are a cut above the NiMh. If they made AAs 1.5v in Li I'd jump all over them as well but the AA size are actually 3.7v
Dimefinder
New member
I remember reading somewhere that Lithium ion batteries run at a lower voltage, and some detectors can be sensitive to that. Read your manual, and make sure that the detector can handle it.
sprchng
Well-known member
Dimefinder said:
That's a very good point.
I am not driving a detector with them since I sold the CZ and I was concerned when I first got mine and charged them that the charge seemed to stop about 8.8v while even the other cheap Harbor Freight NiMh batteries would go over 9v. The difference was in how long ran they ran and maintained that voltage vs the rapid drop off with the alkalines. I suspect the F5 has a 7.4 voltage regulator.
MarkCZ
Well-known member
sprchng said:
My CoinStrike's which ran on two 9 volt batteries would alarm at 5.0 volts!
And I'm going to say that 5.0v to 6.0v is probably the low voltage cutoff on a good bit of 9 volt powered electronics like metal detectors.
I ran my Omega on the 9 Volt Tenergy's and I couldn't come close to running it down on a LONG days hunt! The good thing about the LSD types is they will also work as a backup battery with their long storage life.
I use the AAA LSD's in the grand kids Walky Talkies, Cordless phones, wireless thermometers, LED flashlights.
I use the AA LSD's in my battery operated toothbrush, my F70, other flashlights, Wireless computer mouse. (I get about six months out of a single charge in my tooth brush)
The wife is still amazed at how long those little Tenergy AAA last in the cordless phone!
They just work so well I've just about switched everything around here that runs on batteries to the Tenergy LSD's.
Mark
I use rechargeable in both my detectors without issue. The AT Pro usually starts at 1 bar from the top when the rechargeable first put in but I get a full 6 hours easily which is normal. The F75 gets so much time on them I usually just change them out every other week just for good measure.
Now I have run duracells and I like them. You get 70 hours on them and thats a lot of hunt time. On the F75 battery's last a long time. At some point your rechargeable will not hold a proper charge. Also one bad battery in your detector will make it go nuts. You will want to take a multi meter and check every so often if you notice a difference in your detector. I use AA in my TRX pinpointer too. Now I always keep two of everything so if I break/loose something I still can hunt. I always carry extra battery's.
Now I have run duracells and I like them. You get 70 hours on them and thats a lot of hunt time. On the F75 battery's last a long time. At some point your rechargeable will not hold a proper charge. Also one bad battery in your detector will make it go nuts. You will want to take a multi meter and check every so often if you notice a difference in your detector. I use AA in my TRX pinpointer too. Now I always keep two of everything so if I break/loose something I still can hunt. I always carry extra battery's.