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9 volt batteriesfor tesoro
- Thread starter bigdawg47
- Start date
Stoof-tabsallday
Well-known member
That can be tricky choosing. Unlike other sizes of batteries not all 9 volts are the same size. Many are taller than others.
I use Duracell because they aren't as tall as some others.
I made the mistake with my tesoro 8 of using utilitech and other batteries in it and it's now permanently compressed the battery terminals.
If I do use a Duracell or Energizer now in it I have to put a folded paper shim at the bottom or it doesn't make contact with the terminals and is loose in the compartment.
I got li ion 9 volts but they are also too tall. They now go in smoke detectors lol.
If you have a Duracell or Energizer, even if it's dead, save it to compare to others you may find and you'll see what I mean about height difference. I was very surprised to see the amount of variation in size between different brands.
I use Duracell because they aren't as tall as some others.
I made the mistake with my tesoro 8 of using utilitech and other batteries in it and it's now permanently compressed the battery terminals.
If I do use a Duracell or Energizer now in it I have to put a folded paper shim at the bottom or it doesn't make contact with the terminals and is loose in the compartment.
I got li ion 9 volts but they are also too tall. They now go in smoke detectors lol.
If you have a Duracell or Energizer, even if it's dead, save it to compare to others you may find and you'll see what I mean about height difference. I was very surprised to see the amount of variation in size between different brands.
vlad
Well-known member
I got about 4 to 5 hours of use as opposed to 15 or so with alkalines (brands make a big difference.)
And rechargeables will self discharge in storage--Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month
Alkalines not in use lose about 1% per year.
And rechargeables will self discharge in storage--Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month
Alkalines not in use lose about 1% per year.
I use Tenergy NiMH and EBL Lithium Ion rechargeables in my Cibola, Minuteman, F19 and Garrett pinpointers. I have not experienced much storage loss, certainly not almost 40% on good quality rechargeables.
I have some rechargeable batteries that are at least 10 years old that still fully charge and work fine. I just carry plenty of charged spares either in my pouch or car.
Jeff
I have some rechargeable batteries that are at least 10 years old that still fully charge and work fine. I just carry plenty of charged spares either in my pouch or car.
Jeff
First, re-read the reply by 'Stoof-tabsallday' for the biggest precaution to take. Many people haven't and it often results in problems, and that is using any battery that is over-sized. Oversized doesn't only mean the battery's length, but also the width and thickness. If over-sized a battery can over-compress the metal battery terminals in the 'drop-on' types. Being too large can also wedge them in the battery compartment, or make it difficult to slide on a battery compartment door. That can result in a cracked / broken plastic door, or wedge a battery so tightly it needs to be pried out.
This can more often happen with a rechargeable battery, but I have seen it too many times with some alkaline batteries as well. You should never have to force a battery into position.
Now, by 'quality' I am, not referring to any specific brand, either. Some batteries are what we might call an 'off-brand' meaning a bulk production or just not long-standing, well-known name. Some are a 'house-brand' battery made for a particular business. Then there are some major names that have production facilities in different parks of the world, and while some do produce a well-made battery with very reliable 'run-times' and performance, there are also many that make an inferior battery. They might be a lower voltage, or have a more variable voltage out of one package, and just not provide an ample 'run-time' .... even though they might have a higher retail price simply because the package has a popular brand name.
So, learn as you go. I don't always make a decision based on where the packaging says a battery was made. But if I find a battery that is not very impressive, I remember the warning signs and don't buy it again. I just remember those that do work Okay, and then I shop for a better price so that I get the best 'run-time' I can at a more affordable price. For example, about October or so I went to the local grocery store. A 'Thriftway' family store that carried Western Family' house brand items, but they had been bought out and the new company, I believe it is called Food Club, had their house-brand items repackaged. As I walked past the Customer Service counter I spied a price-tag on the battery display that read, in big bold numbers, [size=large]99¢[/size].
Yes, that was for their 9-Volt Alkaline Battery! I had an extra $10 so I bought 10 of them, but that was just an unadvertised 2-Day sale, and I went back the next day and they had been cleaned out.
I've used them before and I knew thy were a proper physical size, and they provided decent performance, so I bought a few extras for my Emergency Battery, Flashlight and Radio Tote,
Just make sure they are a 'proper-fit' size, and alkaline, not a standard or heavy-duty battery. Then be alert for any weak-performing batteries and avoid them in the future.
Monte
This can more often happen with a rechargeable battery, but I have seen it too many times with some alkaline batteries as well. You should never have to force a battery into position.
Now, by 'quality' I am, not referring to any specific brand, either. Some batteries are what we might call an 'off-brand' meaning a bulk production or just not long-standing, well-known name. Some are a 'house-brand' battery made for a particular business. Then there are some major names that have production facilities in different parks of the world, and while some do produce a well-made battery with very reliable 'run-times' and performance, there are also many that make an inferior battery. They might be a lower voltage, or have a more variable voltage out of one package, and just not provide an ample 'run-time' .... even though they might have a higher retail price simply because the package has a popular brand name.
So, learn as you go. I don't always make a decision based on where the packaging says a battery was made. But if I find a battery that is not very impressive, I remember the warning signs and don't buy it again. I just remember those that do work Okay, and then I shop for a better price so that I get the best 'run-time' I can at a more affordable price. For example, about October or so I went to the local grocery store. A 'Thriftway' family store that carried Western Family' house brand items, but they had been bought out and the new company, I believe it is called Food Club, had their house-brand items repackaged. As I walked past the Customer Service counter I spied a price-tag on the battery display that read, in big bold numbers, [size=large]99¢[/size].
Yes, that was for their 9-Volt Alkaline Battery! I had an extra $10 so I bought 10 of them, but that was just an unadvertised 2-Day sale, and I went back the next day and they had been cleaned out.
I've used them before and I knew thy were a proper physical size, and they provided decent performance, so I bought a few extras for my Emergency Battery, Flashlight and Radio Tote,Just make sure they are a 'proper-fit' size, and alkaline, not a standard or heavy-duty battery. Then be alert for any weak-performing batteries and avoid them in the future.
Monte
Sven
Well-known member
Walmart brand, been using their AA's and 9 volts for the past 10 years. Cheaper in the bulk packs.
Not sure who makes them now.
By the way a number of years ago, I came up with a 9 volt alkaline battery charger. It worked super. You could get about 5 or charges out of each 9 volt.
Not a popular seller, gave away a number of them , seemed folks would rather spent extra cash on new batteries, than recycle a number of times.
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.
It is advisable when charging two batteries at a time, that both batteries have been
discharged to similar voltage. This will prevent one battery from overcharging.
This charger will not charge AA size batteries in a 6 cell (9 volt) battery holder. Or any
carbon type battery.
----------------------------
Not sure who makes them now.
Battery test-review 18650 comparator
lygte-info.dk
By the way a number of years ago, I came up with a 9 volt alkaline battery charger. It worked super. You could get about 5 or charges out of each 9 volt.
Not a popular seller, gave away a number of them , seemed folks would rather spent extra cash on new batteries, than recycle a number of times.
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.
It is advisable when charging two batteries at a time, that both batteries have been
discharged to similar voltage. This will prevent one battery from overcharging.
This charger will not charge AA size batteries in a 6 cell (9 volt) battery holder. Or any
carbon type battery.
----------------------------
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Amazon batteries are reportedly longer than your standard length and may fit your needs
ToddB64
Active member
Hi All !
Straight from the Bandido ll µMax manual, except I added "Title:", "Sub-title:" and "Page # 13".
Title: GENERAL INFORMATION - CARE AND USE Page # 13
Sub-title: Protecting your investment
• Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a
Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
ToddB64
Straight from the Bandido ll µMax manual, except I added "Title:", "Sub-title:" and "Page # 13".
Title: GENERAL INFORMATION - CARE AND USE Page # 13
Sub-title: Protecting your investment
• Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a
Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
ToddB64
From past posts, I learned the Compadre does NOT have a battery voltage regulator. So I opted not to get the higher 9.6 volt rechargables. I think it was Rusty who said the inital spike could harm the Compadre. I used the lower volt Tenergy and got about 10 hours. The Sunbeam dollar store batteries were great (2/$1) for about 16 hours, but they're now a buck apiece.
Sven
Well-known member
According to the schematics I have, there is a LM2931 voltage regulator. Check the circuit board to see if you have one in place, look for part U8, maybe the newer version Compad. doesn't have one?
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I too have a alkaline battery charger. Problem is the batteries tend to leak and discharge sooner after recharging. Never tried to recharge nine volt batteries so don’t know if it’s a problem. One thing that’s nice is this charger will charge the high capacity nine volts to nearly eleven volts.