Anybody try The new Lithium ion or lithium polymer that are just coming out?

[Reverend B*IKE*]

Any feed back Price or source for buying?

 

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[TheRandyMan]

I have been using the Lithium Ion AAs in my Etrac. Since they are a bit hot on voltage at the start, it takes about 10 or 15 attempts to get the machine to fire up. After they have about 20 hours on them, they usually start the machine up right away as the initial voltage is not too high at that point. I have not worn them out yet, have over 40 hours on them. Will be interesting to see how long they last. Most likely will blow the alkalines away pretty badly.

 

[Frankn]

You can get them at Best Buy. Get the ones with the charger. Do not try to charge them with any other charger. I use a drill with LiO batts. They seam to stay charged forever when not in use. These batteries are constantly being improved due to the advent of the electric car. A third version is in the works right now.
Most good metal detectors have a built in voltage regulator that will adjest the voltage from any AA to the voltage required by the detector. If the voltage in the battery drops to low the detector will try to pull to much current to make up the power difference, this will trigger a shutdown of your detector.

​

 

[sniffer]

while lithiums worked great in my DFX, the ETRAC won't except them. and I'm not willing to fry my Etrac and void the warranty by pressing my luck
I still get around 30 hours with duracells

 

[Frankn]

I guess some brands pay better attention to their voltage regulators. Buy the way, voltage regulator chips are cheap! Kind of makes you wonder. Has anyone ever written to the manufacter and inquired about this problem?

 

[Reg]

The lithium batteries come in several varieties so it is extremely important you get the right ones.

Now, as to the concern of not watching the regulator voltage, well, the lithium disulfide (sometimes called lithium Ion disulfide) batteries that are the sold as a 1.5V type, are really closer to 1.7V. The voltage is a result of the chemistry of the battery and not any regulator. So, this type of battery does run a little higher in voltage because of its design.

Keep in mind this battery CANNOT BE RECHARGED!!!!!!

The most common is the Energizer Lithium commonly sold in most stores.

A totally different lithium battery is the rechargeable Lithium Ion battery that comes in a 9V version as well as cylinder type batteries like the AA size or one of the other various sizes.

These cylindrical batteries are 3.7V per cell and are rechargeable. DO NOT USE THESE BATTERIES IN PLACE OF AA SIZE!!!!!!!!!!!!!!!!! The voltage is more than double which most likely will cause some serious damage.

A larger size of this Li ion battery the 18650 size is more commonly found in battery packs and used in camcorders, laptops, etc. Again, this type of battery is a 3.7V type that is rechargeable. Because the charge voltage is extremely critical a special charger is needed that limits the voltage per cell to 4.2V

Overcharge this type of battery can cause the battery to explode. That is why a special charger is used.

As mentioned earlier, a 9V rechargeable version is also made and often sold with a special charger. This battery only charges to about 8.4V but works well in place of the standard 9V transistor battery.

Fortunately, RNB has built a Li Ion battery pack that replaces the White's slide in battery pack used in many of their newer detectors. I also understand this company now makes a similar pack for the Minelab detectors.

I recently purchased one of the RNB packs that fit the Whites detectors and I am in the process of giving the RNB pack a good workout to make sure it works as the claims made about it. So far, it works as specified, which makes me happy. My main use is in the TDI SL so I need to spend sufficient time to see just how long it will run continuously. I haven't done this yet.

The bottom line is if you are going to use Lithium batteries, make sure you use the right ones to avoid serious and expensive problems.

Reg

 

[Frankn]

Reg, all LI cells are 1.7Volts. It is the difference in potential between the two chemicals in the cell. AAs are cells, not batteries
all Li "9v"batteries" are 8.5Volts. They contain 5 -1.7Volt cells
The battery pack on the whites probably has a voltage regulator chip between the pack and the processor which limits the voltage to a nominal 12V no matter what the batteries will provide. Voltage regulator chips can only lower voltage to there rating.

No matter how big or small you make a Li cell it will always be 1.7 Volts. Other voltages are obtained by stacking 1.7Volt cells, but they will always be in multiples of 1.7 Volts. That's why the "9"Volt battery is really 8.5Volts.

 

[U.K. Brian]

Rayovac claim that the OCV range of their 9 volt lithiums is 9.6 to 9.9 volts.

 

[dustytrails123]

I ran the 1.7 energizers in my ace 350 they lasted a very very long time ...i picked them up on ebay

 

[Frankn]

Brian, Open Circuit voltage is usually a little higher because it includes a little "stored voltage" that dissipates rapidly, but that sounds high. Have you actually checked one? Perhaps they are using one of the newer combinations of chemicals like Lp. I have not checked one of those yet. I have seen Zinc /carbon cells with an open circuit voltage of 1.9vdc. Frank

 

[Reg]

Frankn,

Sorry but lithium batteries or cells if you want to call individual batteries such come in a wide variation of li chemistries and voltages. As a general rule, the voltage can range from 1.5V for some of the non rechargeable to 3.7V for the rechargeable types. Here is a link you might want to study and follow up on to have a better idea of the different types and voltages available.

Lithium battery - Wikipedia, the free encyclopedia

BTW, the 3.7V types are now made in the AA size. So, once again, a person has to be careful when selecting them to avoid damage to their detector. Fortunately, they are not sold in most stores but they are available on Ebay and some battery speciality websites.

The non chargeable li types are often called primary batteries. Here is a link displaying such batteries for sale.

http://www.batteryspace.com/AA-SizePrimaryLithiumBattery.aspx

Now, the rechargeable AA types of li batteries are listed here.


http://www.batteryspace.com/aaaaaseriesli-ioncells.aspx

So, as you can see, you can buy AA types in different voltages for different applications. The listings I linked are just one of many websites were such batteries can be purchased.

Reg

 

[Frankn]

Reg. I will be the first to admit that I am not a chemist. I worked for 32 years in electronics. I had no idea that the chemical versions of the cells, or as they now appear to call them primary batteries was so varried. It is actually a missuse since batteries means multiple. My opinion was based on what I saw actually used and what I stated about other chemical variations. I don't know if it has been changed, but voltages and physical sizes for cells and batteries were standardized and given designations. The AA has a set size and voltage perimeter. This was done to avoid damage to equipment. Perhaps the new style cells are a slightly different size when there is a variance from past standards. Maybe the battery industry has just throughn caution to the wind. Every AA Li I have actually tested has had a nominal voltage of 1.7VDC. I read the first on line you mentioned, but like I said, I am not a chemist. Frank By the way Reg, what's your field of work?

 

[okie jack]

I just got one off of RandB the 2200 and man it took 45 minutes to charge slapped it in my dfx and bam 12.8 volts . I ran it for 2 hours and did not loose hardly nothing . I have been used to putting my whites rechargeable in and having maybe 11.4 and lasting around 2 hours so this is great plus my detector seems to be crisper and going deeper . R and B did not tell me to leave a review and I am not selling these things just a user . I will run the battery til it runs out then report back

 

[norbyx]

I just got one off of RandB the 2200 and man it took 45 minutes to charge slapped it in my dfx and bam 12.8 volts . I ran it for 2 hours and did not loose hardly nothing . I have been used to putting my whites rechargeable in and having maybe 11.4 and lasting around 2 hours so this is great plus my detector seems to be crisper and going deeper . R and B did not tell me to leave a review and I am not selling these things just a user . I will run the battery til it runs out then report back

I think that the differences you are experiencing with the new battery are marely psicological. The detector has a voltage regulator that brings down the 12.8 Volts to about 8V so it is alway running at the same voltage, and there can't be any difference in performance.
Anyhow the thing that can be different is how much the batteries last.

 

[okie jack]

I think that the differences you are experiencing with the new battery are marely psicological. The detector has a voltage regulator that brings down the 12.8 Volts to about 8V so it is alway running at the same voltage, and there can't be any difference in performance.
Anyhow the thing that can be different is how much the batteries last.

Why is it that my machine dies when the battery is 10 volts when it only takes 8 to run it ?It seems to run better with the battery i was having some problems with it before I got the battery but I figured it was from my other batteries running to low. The more I learn about these dang detector the better I will be able to use them?

 

[Frankn]

Okie Jack, Norbyx is correct about the voltage regulator limiting the input, but I thought it was a higher voltage regulator. Just my guess. The old Whites rechargeable pac was a different chemistry with a lower full charge rating and a much lower endurance. The regulator just limits the max voltage it will pass. Another circuit is the low voltage cutoff. Frank

 

[Frankn]

I was just reading some technical literature on Lithium cells. One of the new chemical combinations with Lithium produces a 3VDC cell. I don't know which combo this is yet. A lot of these combos are made especially for certain usages like electric drills, or cars. frank

 

[ticm]

My doctor gives me lithium.It is expensive!.Have you found this to be true?.Charles Ray.

<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=670064"/>

Your Dr. Must be very wise.

 

[okie jack]

The rechargeable lithium I got off of r and b has lasted lasted and lasted man it's great when you finally run it down takes about 30 minutes to charge back up . I would say it is pretty close to half the weight . Again I am just a user not a seller . I guess the reason why I'm so excited is because I was used to the old rechargeables and this one beats the hell out of them.

 

[Redeye]

I just ordered A Tenergy Li-Ion 18650 11.1V 2600mAh PCB Protected, connectors and charger for my whites v3i. cost was $68 w/shipping. I haven't figured out how i will mount them yet. probably in the AA batt pack or possibly externally on the detector. Will update results after I install.