I AM OVER IT

[user 4485]

Those 3.7v 18650 batteries will charge higher than that. The 3.7v is a nominal voltage & they charge to ~4.2v so 3 would do it.
Li ion chargers cut out at around 4.3v/cell to prevent overcharging & protection circuits prevent discharge going lower than about 3.2v. So li ions will output ~3.2v to 4.2v per cell over their usefull charge to discharge cycle.
The 12v li ion packs your buying will likely contain 3 x 3.7v li ion cells but if you read the rated output (if its on them) it should be something like 10.8v to 12.6v
Li ion cells use the nominal value of 3.7v because its about where the battery/cell spends most of its life during charge > discharge cycle.
These ones are sold as 10.8v https://www.batteriesdirect.com.au/mobile/shop/product/27374/licb-18650-3s1p-hc-f.html but max charge would be 12.6v.
The ones I posted above might be slightly high {) There are examples of people using higher voltage packs with the Sovereign GT with the thinking it's internally regulated like a lot of detectors but yeah I'd probably stick to around 12v to if it was me.

 

[Guest]

Those 3.7v 18650 batteries will charge higher than that. The 3.7v is a nominal voltage & they charge to ~4.2v so 3 would do it.
Li ion chargers cut out at around 4.3v/cell to prevent overcharging & protection circuits prevent discharge going lower than about 3.2v. So li ions will output ~3.2v to 4.2v per cell over their usefull charge to discharge cycle.
The 12v li ion packs your buying will likely contain 3 x 3.7v li ion cells but if you read the rated output (if its on them) it should be something like 10.8v to 12.6v
Li ion cells use the nominal value of 3.7v because its about where the battery/cell spends most of its life during charge > discharge cycle.
These ones are sold as 10.8v https://www.batteriesdirect.com.au/mobile/shop/product/27374/licb-18650-3s1p-hc-f.html but max charge would be 12.6v.
The ones I posted above might be slightly high {) There are examples of people using higher voltage packs with the Sovereign GT with the thinking it's internally regulated like a lot of detectors but yeah I'd probably stick to around 12v to if it was me.

Gday mbasko

Thanks for the explanation, I was concerned that 3 batteries would not be enough but what your saying is correct and they should be ok, also I don't know whats inside the packs I bought and I have one thats crapped itself so I will open it up and have a looksee, but also I didn't want to use four batteries as when they are fully charged there might be too much voltage for the detector and it may damage it, I could not find out if the sovereign has an internal regulator or not?, I know with the pi detectors from I think its the the Gp extreme onwards that they were internally regulated so if you are a little over there is not usually a problem, so like you said I went in the direction of caution and thought it safer to stick close to the 12v, thats exactly why I thought that these battery packs should do the job, sucker.

The li ion battery set up I made for the 2300 and Sd detectors, uses one of those F970 li ion batteries, sony handicam type, through a buck converter, looks a bit like the coiltek pocket rocket set up, to keep it around 7.2 volts, it works well but when the battery has been fully charged it makes the 2300 warble a bit more than usual?, it still works as normal but the warble decreases after an hour or so of use, it could just be interference from the regulator?, with the sd2100 it runs normally with no side effects.

cheers

stayyerAU

 

[eLuke455]

You could try BangGood as I personally have had more success than eBay although I have not purchased batteries specifically. What I like about BG is that they allow reviews and I stick to items with 300+ reviews with 5/5 stars.

Cheers
Luke

G'day Luke

Well bugger me I must be getting old?, I just thought BangGood was an asian porn site so I have been avoiding it O , thats one of the issues with bumtree its anonymous and you cant chit can the a..holes, but I have found a way to block them from bothering me in the future so if they waste my time I just block them from sending me stupid messages, has worked a treat so far.

stayyerAU

No problems. I will admit I get my fair share of strange looks when telling people to go check out BG. I've purchased a variety of bits and pieces from them, shop tools, USB accessories, blue tooth speakers, electronic kits for the kids to build. Delivery and accuracy have been excellent. However, I stay away from 240v and safety related items - not worth the risk regardless of how many stars they get in reviews.

Cheers
Luke

 

[eLuke455]

Those 3.7v 18650 batteries will charge higher than that. The 3.7v is a nominal voltage & they charge to ~4.2v so 3 would do it.
Li ion chargers cut out at around 4.3v/cell to prevent overcharging & protection circuits prevent discharge going lower than about 3.2v. So li ions will output ~3.2v to 4.2v per cell over their usefull charge to discharge cycle.
The 12v li ion packs your buying will likely contain 3 x 3.7v li ion cells but if you read the rated output (if its on them) it should be something like 10.8v to 12.6v
Li ion cells use the nominal value of 3.7v because its about where the battery/cell spends most of its life during charge > discharge cycle.
These ones are sold as 10.8v but max charge would be 12.6v.
The ones I posted above might be slightly high {) There are examples of people using higher voltage packs with the Sovereign GT with the thinking it's internally regulated like a lot of detectors but yeah I'd probably stick to around 12v to if it was me.

Gday mbasko

Thanks for the explanation, I was concerned that 3 batteries would not be enough but what your saying is correct and they should be ok, also I don't know whats inside the packs I bought and I have one thats crapped itself so I will open it up and have a looksee, but also I didn't want to use four batteries as when they are fully charged there might be too much voltage for the detector and it may damage it, I could not find out if the sovereign has an internal regulator or not?, I know with the pi detectors from I think its the the Gp extreme onwards that they were internally regulated so if you are a little over there is not usually a problem, so like you said I went in the direction of caution and thought it safer to stick close to the 12v, thats exactly why I thought that these battery packs should do the job, sucker.

The li ion battery set up I made for the 2300 and Sd detectors, uses one of those F970 li ion batteries, sony handicam type, through a buck converter, looks a bit like the coiltek pocket rocket set up, to keep it around 7.2 volts, it works well but when the battery has been fully charged it makes the 2300 warble a bit more than usual?, it still works as normal but the warble decreases after an hour or so of use, it could just be interference from the regulator?, with the sd2100 it runs normally with no side effects.

cheers

stayyerAU

Have you considered LiPO technology? Lighter than other battery technologies although comes with more danger in recharging. I used them on R/C gear with recharging via an iMAX B6 charger. Plenty of different voltage/form factors around for R/C cars, drones, etc.

Luke

 

[goldtrapper]

And as ebay are now making billions from the postage fees they are offering discount coupons to buyers whilst still paying the seller the full amount. Which shows just how much they are ripping sellers off in fees.
It works well if you are a buyer.