Imren 2500 40amp?

[bondo]

I went to my b&m for a Pair of 18650s and the clerk suggested the imren 40's.
I asked if he knew if they were true 40a and he claimed to have tested them and they read true.
I walked out with a pair of HE4 rather than take his word for it.

Does anyone know about these batteries?

 

[Number3124]

You did right. Imren whatever, whatevers aren't what they claim to be. It's another rewrap hatchet job.

 

[Zamazam]

It bothers me when vendors sell batteries with the pulse rate listed as the overall constant rate of the battery.

 

[Number3124]

It bothers me when vendors sell batteries with the pulse rate listed as the overall constant rate of the battery.

This.

Also, it fucking pisses me off to no fucking end that companies massively inflate the stats of these cells knowing who their primary market is and how we use them.

 

[freemind]

It bothers me when vendors sell batteries with the pulse rate listed as the overall constant rate of the battery.

What bothers me more, is a vendor that doesn't know that the pulse rating is NOT the continuous draw rating.

I have 2 sets of eFest purples. I don't have issues with them, but I do not use them at a constant 35 amp draw either.

 

[Zamazam]

Not knowing the specifics on a battery is a lack of knowledge on the vendors part. Knowingly selling batteries with the pulse rating as the constant output rate is shady, immoral, and dangerous. I've seen a local B&M build a dripper for a young woman at .15 Ohms and put in a fucking 5 amp green Panasonic battery into the mod. I damn near lost my shit on the young guy who did the build for the young woman.

 

[freemind]

I would have lost it, not almost lost it. Some dipshit pulled some unsafe horseshit like that, and I would have blown my top right there.

Battery safety isn't a joke.

 

[bondo]

Thanks for the feedback.
had it not been for the threads on this forum about rewrapped cells with false claims,I probably would have popped on the imrens.
this guy was pretty convincing but VU has taught me to be leary so thank you!

I did find it suspicious that a pair of "40a" were cheaper than the LG's.
I was also leary simply from the fact that he didn't ask what I would use them on in the whole 15 minutes or so that we talked about them.

 

[dr_rox]

With current technology, high current and high capacity are mutually exclusive.

Think about this - a 26650 vs 18650.

The 26650 is roughly 2.4 the volume of the 18650.

What do you really gain in tems of capacity - and current?

Is it 2.4X more of each spec???


.

 

[Slurp812]

Yea dr_rox, I'd expect a true 40 amp battery to be like 1200 mah!

 

[dr_rox]

Slurp... advanced reasoning, you have. q;-P

What would a Russian do with the battery current problem some of you face, eh?
The US built a Saturn rocket. They built a Vostok. They put 5 motors together to make 1 big one.
Use 2x 18650's or 2x 26650's in a box in parallel.... now look at the maximums possible. You effectively double the specs, and don't have to look for the Saturn booster.

From a circuit designer's standpoint, the amp rating IS NOT a safe MAXIMUM.
IT IS WHAT IS DELIVERABLE within the design parameters/chemical restrictions of the battery.
There is a 32650 that is 7 aH, but max current is .5 amps. It is designed for memory back-up - which it can do PREDICTABLY for 14 hrs at max output, if required. IOW, I would not build a device that required 1 amp to operate then use a .5 amp battery in the build.

Using the rocket analogy,
IF the payload is too heavy for one rocket booster, it will make a lot of noise and smoke, but not move an inch.
You got nuttin'.
Put several together, you have a rocket.

OR, if you put a small 12v battery in your car, the lights will look normal and the radio plays, but when you go turn the key to start, all you get is relays clicking cuz there ain't enough current coming from the battery to operate the starter. Put a few more batteries in parallel, no problemo.

How many 12 volt wall warts do you have for electronics? Probably a bunch, all different sizes, but all with a MAX amp rating. Let's say you have a laptop that uses a 12 volt 6 amp one. But you lost it. So you find a 12v 1.5 amp one. It'll work eh? That one works the laptop but only if the batteries are charged, but it GETS HOT. The 6 amp one ran cool, even when charging dead batteries. It was not overworked.

When you use a regulated mod, the load is the chip/circuit, not the coil. But going back to the car analogy, if your 6 volt battery to start the car via a competent DC-DC booster is too low a current rating, you are back to having just relays clicking, and circuit getting hot.

Do the math.
If load<<amp rating, the batteries will be happy, you will be happy, and performance predictable and consistent.

.

 

[madmonkey]

Not knowing the specifics on a battery is a lack of knowledge on the vendors part. Knowingly selling batteries with the pulse rating as the constant output rate is shady, immoral, and dangerous. I've seen a local B&M build a dripper for a young woman at .15 Ohms and put in a fucking 5 amp green Panasonic battery into the mod. I damn near lost my shit on the young guy who did the build for the young woman.

That shit pisses me off to just read...I had a simular experience with a friend of mine I've mentioned before where he went shopping without me after I told him not to and the guy price gouged him on a clone mech and dripper and then built him up a twisted 24 gauge coil and sold him the infamous Samsung 26F five amp battery....better known as the "pink battery that came with the eVic." I keep it on my desk as decoration...I've got those pink batteries in my old eVic and eVic easy head mods but that one sits as a symbol.

 

[ConcreteBob]

If the government is going to turn vaping into a regulations boondoggle, which I pray they don't, I would at least like to see regulations regarding batteries tacked on to the rest of their BS. I also saw a clerk at a B&M put someone at risk like that. Tried to sell a guy who was buying his first mech mod a Tomo ICR button top. I literally pushed the guy out of the way and proceeded to climb down the clerk's throat. The guy that was about to buy it got pissed, until he actually heard what I was telling the clerk. I talked him out of buying anything there and sent him to my regular spot.