Sony VTC 4 vs. VTC5
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The VCT5's are 20A CDR, VTC4's 30A CDR.
So when I need a 30A battery, the VTC4 would be a better choice for me.
Here are some links to @Mooch's battery blogs:
* No matter what is printed on the battery wrapper: There are no 18650 batteries with a genuine rating over 30A!
* Links to all his battery tests to date: List of My Battery Tests
* Picking a Safe Battery to vape With: Table of 18650 Battery Safety Grades
So when I need a 30A battery, the VTC4 would be a better choice for me.
Here are some links to @Mooch's battery blogs:
* No matter what is printed on the battery wrapper: There are no 18650 batteries with a genuine rating over 30A!
* Links to all his battery tests to date: List of My Battery Tests
* Picking a Safe Battery to vape With: Table of 18650 Battery Safety Grades
VTC4's are 30 amp...As Susan suggested..check Mooch's blog and links she posted!
Okay, got it, but Ilumn.com seems to be constantly out of them. I just tried to order 8 of them and they ain't got em. Seems every time I try to get them there they are out. Bummer in the summer...
Reduced my order to 2, and they don't have them either, but are saying the shortage of supply has ended. Well, I guess not... At $6 a battery I guess they move pretty much instantly.
Reduced my order to 2, and they don't have them either, but are saying the shortage of supply has ended. Well, I guess not... At $6 a battery I guess they move pretty much instantly.
Someone correct me if I'm wrong, but I believe the battery C rating is a good way to describe the difference between the two.
The VTC4 has a higher C rating than the VTC5, around 14.3C compared to around 11.5C. Doesn't this give it the VTC4 the ability to discharge more current at a given time? That higher rating is only possible with lower mAh as well.
The VTC4 has a higher C rating than the VTC5, around 14.3C compared to around 11.5C. Doesn't this give it the VTC4 the ability to discharge more current at a given time? That higher rating is only possible with lower mAh as well.
4 pcs Sony 18650VTC4
I just wanted to post that site that sells a 4 pack. They appear to be in stock and I order my AW IMR's from them for my Reo.
I won't repeat what, but basically what everyone else such as Susan-S said.
I just wanted to post that site that sells a 4 pack. They appear to be in stock and I order my AW IMR's from them for my Reo.
I won't repeat what, but basically what everyone else such as Susan-S said.
Sony VTC5 30A 18650 Authentic High Drain 2600mAh rechargeable battery 3.7V
So Orbtronic is a trusted source for batteries that can't be trusted?
So I want 30A batteries. I should go for vtc4? Can anybody tell me a good seller in the UK? Thanks
Just stock balancing. Takes time.
Sony moved Facilities requiring a Long delay in production and Huge Backlog of orders.
Manufacturing first, Industrial next then catching up on Wholesale suppliers.
Meanwhile Retail customers piled up and are now clambering for their purchases.
Give it a few weeks and stock should settle.
* Much like ordering a Mod just after Chinese New Year
Sony moved Facilities requiring a Long delay in production and Huge Backlog of orders.
Manufacturing first, Industrial next then catching up on Wholesale suppliers.
Meanwhile Retail customers piled up and are now clambering for their purchases.
Give it a few weeks and stock should settle.
* Much like ordering a Mod just after Chinese New Year
Yup, same goes for RTD & many others. They just took someone elses word for it instead of finding out for themselves.
It's not all that hard to put a 30a load on a battery and monitor the temperature.
Correct me if I'm wrong, but I don't believe that Sony has ever claimed that VTCs were 30a batteries.
I can find lots of other sites that claim they are, but NOT Sony.
This is the only Sony's response that I've found:
"The specifications and markings on the battery may vary depending upon the OEM’s requirements."
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Yup...the VTC datasheets have no max continuous discharge current rating.
There are 30A discharge plots in the VTC4 tech info document though. Unfortunately no one bothered to notice that the cell reached almost 100°C at that discharge level. Or, that they had a 75°C cutoff for the life cycle test at 30A. They just took that 30A number and ran with it.
How the VTC5 got its (incorrect) 30A rating, I have no idea.
Those C ratings are based on a 30A max continuous discharge rating. If using their 20A rating then the C ratings are lower.
You bring up an interesting point though! While the C rating could indicate that one battery might be able to discharge at a higher current than another, it can also just indicate that a battery had a greater capacity and equal or lower current rating. For example, a 20A/2000mAh battery and a 15A/3000mAh battery. The 20A battery would have a C rating of 40C. The 15A battery would have a C rating of 45C. The battery with the lower current rating has the higher C rating.
I know that C ratings are very popular, especially in the R/C world. But they are of limited use when comparing batteries with different capacities.
I totally agree with your lower-Ah-rating statement. In order to get appreciably higher capacity, in the same sized battery, they have to lower the current rating. This is due to the additional material needed to store the extra capacity. Having more material means that there's higher resistance. The current flowing through this additional resistance causes a greater voltage drop which increases heating and lowers the measured capacity. This forces the current rating to be lowered to compensate.
i have 6 of the vtc5's and have always wanted to pull the plug and order a few vtc4's to compare...ive always wondered why the 5's were always advertised has 30 amps has well..i have no complaints about there performance but this thread made me pull the trigger and i ordered 6 of the vtc4's i cant wait to try them out and see if there is much of a difference so thank you for helping me spend my money..lol
There aren't any 18650's with a continuous rating over 30A but there are a couple with true 30A ratings; LG HB6 and LG HB2. The VTC4 is a 20A battery but it can be pushed to 30A. It's the only choice for going above 20A or so if you want more than the 1500mAh capacity of the HB6/HB2. I highly recommend the VTC4 for higher than 20A, it's the best overall battery for high current.
Ah that's right, the rating will change based on it's true continuous. I pulled the C rating from Steam engine, and it looks like both the VTC4 and VTC5 is listed as a 30A battery. I see what you're getting at too, you can't really compare those ratings straightforward since the capacity is different, almost as if they two batteries are used for different applications, which in a sense they are.
Then the VTC4 is really 20/2.1=9.5C and VTC5 is 20/2.6=7.6C.
I'm still a little rough with the C rating and it's meaning. From those numbers for the VTC4 it means we can draw 9.5 times the capacity in Amps(2.1) to get 20 continuous discharge. The numbers kind of explain the C rating and what it means, but I'm not sure if there's something else I'm missing.
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