Yep..those are the ones I have and they definitely have a protection pcb.
What a pain in the A**!
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Yep..those are the ones I have and they definitely have a protection pcb.
I have one set that is weaker than the other. Maybe I damaged them by running them too long? Is that what you are saying. The Prodigy without it's own Protection circuit on board will allow you to over discharge? Or do the batteries have this protection built in?
Another thing; Do you have to get the charger to match those 900 mAh Tenergy batteries? I see that you can get a kit with 4 batteries and charger for 30 bucks... Somewhere in the specs it says something like only use this charger for these batteries. Is it OK to use a universal charger on different mAh batteries?
Quote from Battery Junction:
Warnings:
You must use the 3.0V RCR123A battery charger included to charge these 900mah RCR123A 3.0V batteries, please do not use other chargesr nor charge other batteries with this charger.
This Charger can not be used to charge any other 3.0 or 3.6V RCR123A cells or they may explode!
This scares me from using my charger that came with the Prodigy. Even though they are the same brand just different mAh..... Scratches head wondering....hmmm....
Another thing; Do you have to get the charger to match those 900 mAh Tenergy batteries? I see that you can get a kit with 4 batteries and charger for 30 bucks... Somewhere in the specs it says something like only use this charger for these batteries. Is it OK to use a universal charger on different mAh batteries?
Quote from Battery Junction:
Warnings:
You must use the 3.0V RCR123A battery charger included to charge these 900mah RCR123A 3.0V batteries, please do not use other chargesr nor charge other batteries with this charger.
This Charger can not be used to charge any other 3.0 or 3.6V RCR123A cells or they may explode!
This scares me from using my charger that came with the Prodigy. Even though they are the same brand just different mAh..... Scratches head wondering....hmmm....
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The blue protected version has a pcb, I don't believe the LiFePO4 do. At least I can't find any documentation on the Tenergy site that they do.
Thanks Nuck, I feel better about the kit. I guess like trustfire there are more than just the few models I have found. So if they are protected there is no way the user can hurt them.
They warn against using any charger than the one designed for those specific batteries. You shouldn't mix these LiFePO4 Li-Ion batteries with standard lithium batteries. You should never mix them in your prodigy either.
Kevin
They warn against using any charger than the one designed for those specific batteries. You shouldn't mix these LiFePO4 Li-Ion batteries with standard lithium batteries. You should never mix them in your prodigy either.
Kevin
So I should just go ahead and get the charger battery combo kit to be safe? I think I want to switch to those 900 mAh anyway...
The 900 mah are Li-ion and even though they are protected by a pcb they are inherently not as safe as LiFePO4 bats. Even with the slightly reduced capacity, they have up to 4 times more recharges in them and you never have to worry about fire or explosions.
If given a choice, I'd always go with LiFePO4 over Li ion.
I'm not sure yet. Nuck says they are protected but the specs say something funny:
If they are protected why would they make this statement? If they were protected you would have no choice in the matter, the pcb would open the circuit.
Oh well, if you do get the 900mAh batteries I mentioned you will also need a lithium ion charger to charge them with.
Kevin
I agree! I took me a while looking at documentation and studying the difference, but I'm with you on that, Nuck. Even if they cost a bit more and I have to throw out some duds now and then. I just keep rotating sets and don't over discharge.
Uh oh..time to eat crow...
That quote you posted got me curious so I pulled apart one of my bats to make sure the PCB was indeed a PCB.
Here is the pic:
Turns out its a metal lip the same size as a PCB...so my bad
I guess I will have to see what happens. I got started on the wrong road by this post:
There are several post complaining about the batteries. quovadis should have not been able to measure at 2.0v much less under 2.0v. I went to the Tenergy site and that is the only model of that type that they make. If they are protected then they are going to be the best available for 6.0v since they quote 2000 cycles and do not explode or burn.
The specification wording may just be a simple translation issue.
Kevin
Originally Posted by quovadis
Who else has been having problems with the Tenergy brand 3volt batts?
Some of mine hold a charge for 20 minutes, then the voltage measured drops to under 2 volts.
Thrown out 3 batteries already.8-o
There are several post complaining about the batteries. quovadis should have not been able to measure at 2.0v much less under 2.0v. I went to the Tenergy site and that is the only model of that type that they make. If they are protected then they are going to be the best available for 6.0v since they quote 2000 cycles and do not explode or burn.
The specification wording may just be a simple translation issue.
Kevin
Dude..
I have thrown away 4 Tenergy batts that lose their charge within 15 minutes of vaping...
Well, you should have never seen voltage at 2.0. At 2.2 the PCB should have kicked in and your reading should have been 0v. That's what got me checking into the whole issue.
Kevin
They might not have lost their charge - could have been they were not properly charged to begin with. There's a pdf available on LiFePO4 123 sized cells available if you look for it - no active protection circuit, but testing shows no issues with shorts and over/under charge - that's the point of these cells.
The 3V standard Li-Ion cells suck mostly and they should have their own charger as well - that would mean 3 different chargers to keep track of if you had all three kinds (3.7V/3V and LiFePO4) of cells.
The 3V standard Li-Ion cells suck mostly and they should have their own charger as well - that would mean 3 different chargers to keep track of if you had all three kinds (3.7V/3V and LiFePO4) of cells.
You're right. I have more chargers than I really want. I really didn't want another hobby but it looks like this is turning into one.
Kevin
4x CR123A 3v CR123 CR Rechargeable Battery 3.0v+CHARGER on eBay (end time 30-Sep-09 15:51:07 BST)
I'm giving some of these a shot. I'll update when I get them.
Brian
That's bizarre...those were linked in IRC just last nite. You might want to look at this link:
4X CR123A CR123 3.0V 3V Rechargeable Battery+CHARGER - eBay (item 290333640252 end time Sep-21-09 03:03:29 PDT)
Keep in mind those are unprotected and thats a damn cheap charger even by Chinese standards.
Right. I never leave a charger unattended anyway for safty reasons. Read that the Walrus used them in his Prodigy so I figured I'd give them a shot. Someone unwrapped the Tenergy batteries we are using and they were unprotected too.
Brian
Yeah..it was me..shortly after I claimed they were protected. A bit embarrassing to say the least.
There is a difference between the Tenergy LiFePO4 and the ones you are buying though. The worse that can happen with LiFePO4 is they get hot, no fire and no explosion. The Li-ion you are buying can fail dramatically, exploding and/or causing fire that will burn at several thousand degrees. It's fine as long as you are careful and aware of all the dangers, but definitely not recommended for casual users.
Yeah..it was me..shortly after I claimed they were protected. A bit embarrassing to say the least.
There is a difference between the Tenergy LiFePO4 and the ones you are buying though. The worse that can happen with LiFePO4 is they get hot, no fire and no explosion. The Li-ion you are buying can fail dramatically, exploding and/or causing fire that will burn at several thousand degrees. It's fine as long as you are careful and aware of all the dangers, but definitely not recommended for casual users.
I was caught off guard too. I hadn't known much about these new LiFePO4 batteries. This is the new technology that will probably advance the electric car production. Most of the stock oem batteries only rate their life span as 300 to 500 charge cycles. The Tenergy LiFePO4 claims 2000 cycles and no fire or explode hazzards. If this is true and they are fully protected puresmoker has made a good choice.
Kevin
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