C Rating? Battery Specifications?

[EJH]

Because of all the concern recently regarding battery safety, some questions came to mind about battery specifications:

1) What are the recommended specifications for batteries for use in a PV? I found in a sticky elsewhere here on ECF that a battery of at least 4C (correct me if I am wrong) is preferable for maximum safety. Which leads to another question...

2) How does one calculate C rating? In general, vendors of batteries for PVs only provide capacity (in mah) and whether they are protected or not. I browsed over to a vendor of batteries intended primarily for Radio Controlled vehicles and found complete specifications for their batteries. For example:
http://www.all-battery.com/li-ion1865037v2600mahrechargeablebatterieswithpcb-1.aspx

3) is it feasible/reasonable for PV battery vendors to provide detailed specs such as in this link so PV users can make informed purchases for their safety?

Personally, I only use Trustfire or Ultrafire protected batteries, but I could not tell you their C ratings or maximum discharge rate or anything else beyond the battery's capacity and if it is protected or not. I would feel better about using them if this information was made easily available. I'm not worried about my batts blowing up or anything, but knowing the numbers would be helpful in preventing folks from buying potentially less safe batteries.

EJ

 

[mooreted]

http://batteryuniversity.com/

Sent from my easy chair using brainwaves.

 

[Rocketman]

look over the page you linked to.

It shows a protected cell with the protection board exposed.

and that's a pretty good battery.
It has a 1.5 C rating

1.5 times 2.6 AH = 3.9 amps.

4 C for a 2600mah battery would be 10.4 amps.

I'm not sure I want a battery that will put out 10. 4 amps before protection kicks in.

or a HIGH DRAIN cell capable of 10 amps continuous and 20+ amps into a short.
(unless I needed that kind of current to start off a hot wire flashlight)

 

[tj99959]

C ratings can be a little confusing, and is about how fast a battery can discharge.

Here is a simplified example of how C ratings work:
10C battery 300mAh - CAN discharge up to 3Amps, but using it at that rate it will fully discharge in 6 minutes
1C battery 300mAh - CAN only discharge up to 300mA, but using it at that rate it will fully discharge in 60 minutes

So for our purposes a C rating 5 would give the best performance coupled with best battery life.
Good luck finding that!
This makes the size of the bat (mAh) more important than C ratings with vaping.