I no longer need 9V batteries

[horikindaguy]

it's frozen out so I did a little project so I wouldn't have to use the single 9v battery any longer.

I bought a compact 6 AA battery holder (yields 9V in series) with connector & leads (free shipping from Hong Kong),
opened up the G2 and tapped (didn't cut) into the 2 DC power wires (routed the cable back out through the battery holder).
The cable runs to the armrest and the connector snaps into the new power 'case' with the 6 AA batteries. This gives me 4 times the capacity (and hours)
of the single 9V. I placed the holder in a small insulated, waterproof pouch I had lying around and strap it to the bottom of the armrest with a 'live strong' rubber wrist band.

works great, the added under arm rest weight helps the balance, a la F75....

cheers...

 

[woodchiphustler]

Thats a good one . Pic if you can. Thanks

 

[horikindaguy]

$5 + free shipping from e'snay'. I'll try and take a photo of the finished product later.

 

[mudpuppy]

Thats a great idea and job! Looking forward to the pics of the finished rig!
Mud

 

[IBdiggin]

Interesting, I guess I didn't realize the F75 used 9volt. Thought they were the same as thee F70-------------You can teach an old dog new tricks

 

[horikindaguy]

Interesting, I guess I didn't realize the F75 used 9volt. Thought they were the same as thee F70-------------You can teach an old dog new tricks

F75, F70 use 4 AA batteries. What I did would work for any model that uses a single 9V battery. I changed my G2, tired of 9V's, high cost, low life and reduced performance (my
perception) as they decline in amperage.

 

[horikindaguy]

you can also see the headphone extension to the armrest I added which has a good quality 'slider' volume control. The cable came from a set of Koss UR29's (100 ohm impedance) I no longer wanted to use. I soldered the female 1/8" receiver with cable to the pc board inside the rheostat housing for a solid connection. works great with any of my headphones now....the waterproof neoprene bag I use for the new battery case keeps it dry and provides a bit of insulation from the cold....I used gorilla tape to seal the battery cover (and speaker holes) since I didn't want to make a permanent change to the housing...

 

[mudpuppy]

I hate 9v too for the reasons you mentioned....I hate them so bad in fact, that would be a deal breaker for me on any machine...this is a realistic, simple and cheap 'work around' to that hatred, so thank you Horkin!

.IBdiggin...I think Horkin was referring to getting the batt pack up under the arm like our 70's/75's have...for balance....instead of down in the box like lets say a F5..? .by the way, how you doing Pal?.
Mud

 

[IBdiggin]

Gotcha Mud.------------ I'm ok , been a little withdrawn lately. Holidays are sort of a sad time around here. Hope everything is good with all my F swingin friends--------Merry merry and a happy happy-------IB

 

[MarkCZ]

My Omega using a single 9 volt battery, but I just bought a couple of LSD rechargeables and they wear me out before they run dead, they have a one year shelf life on a charge, they read full scale on the battery meter for like 15 hours then drop off one bar, but I can still detect for a good bit even at that point.
I really don't think there is any loss in performance until the voltage drops to 5 volts or lower on these detectors, they really are not like a flashlight. Now that's not to say that the larger stack of double AA isn't going to give you more run time for sure! but one 9 volt battery and 15 hours and I'm pretty much done for the day. Then I just bring it back home and recharge it and I'm good to go again. I actually have four of these batteries, my Coinstrike and my pro-pointer also uses 9 volt batteries, and the 1270 I had used them, so I don't ever plan on buying 9 volt batteries again!

Mark

 

[sdesic]

Good DIY project for cold days.
I tried using rechargeable 9V batteries but I gave up ... China made batteries are crap.
I had problem with inserting one of them ... it was longer than regular 9V by 2-3 mm... barely fits in place on my G2.
And then it lasted only 3 hrs (of first charge) with headphones.

Alkaline batteries on one bar lasts me more than 4 hrs.

 

[MarkCZ]

Good DIY project for cold days.
I tried using rechargeable 9V batteries but I gave up ... China made batteries are crap.
I had problem with inserting one of them ... it was longer than regular 9V by 2-3 mm... barely fits in place on my G2.
And then it lasted only 3 hrs (of first charge) with headphones.

Alkaline batteries on one bar lasts me more than 4 hrs.

Here are the rechargeables I use, they fit my Omega, Coinstrike, the Fisher 1270, Fisher ID-Edge, and the Vaquero I had.
They are the LSD type and work very well.
I get my batteries at batteryjunction dot com, pretty good prices and fast shipping,
The little 2 bay smart charger for $8.00 works really good too.

Mark

 

[1wrasmussen]

Now that's what I call a mod. Good job.

 

[fjs440]

Doesn't six AA batteries plus a holder weigh more than a nine volt battery? My F2 has two nine volt batteries. Can you imagine the weight difference of using twelve AA to replace them?
__________________________________________
Fisher F2 w/4”, 8” and NEL Hunter Coils
Fisher 1280-X w/8”Coil

 

[Sven]

Does weigh more but the extra weight under the arm cuff helps balance a detector better especially when using the larger coils.

I have my own charger for 9 volts to charge Alkaline batteries, yes you can charge them. My charger charges them and then don't even get warm, leak or explode.
Alkies are good for at least 5 recharges. My friend hasn't bought a 9 volt battery in years, gets his free from the recycle bins and recharges them.

I offered my charger for a couple years funny how only a handful of guys took me up on the offer considering all the 9 volts being used in detectors.. chargers were dirt cheap.
Thought folks would jump at the chance to save a wallet full of money on 9 volt batteries, guess not.

This charger is designed to safely charge “only” 9 volt Alkaline batteries.
Either charge 1 or 2 batteries at a time.


Complete charge takes approx. 4-8 hours depending upon battery condition.
There is no timer or auto cut off.
Check battery voltage with a multimeter. If battery voltage reads 10 volts or more, unplug battery from charger. This will stop the charging. Over a period of 1 hour the voltage will drop back closer to 9 volts. This is normal.

Can be left on charge overnight without harm. Charger will not overheat 9 volt Alkaline batteries.

Depending upon brand of battery, possible to recharge up to 5x, possibly more.


This charger will not charge AA size batteries in a 6 cell (9 volt) battery holder. Or any carbon type battery.