Charles,

For our entertainment for this evening, I have just destroyed 24 Sanyo RC3600 cells and 24 IB4200 cells.

I did this by

1. Charging at 10c

2. Discharging at between 50-100amps

3. Exposing the cells to extremes of heat tempreture

I can now say that the Sanyo and the IB with confidence "vent/expolde Voilently" when exposed to these enviroments.

OK the IB werent WC or SHV cells but neither where the Sanyos the top cells.

Sanyo cells will explode the same as IB cells when stresss to simular conditions IE: 3c charge for each and 20c discharge for each based on there ratings ie: 3600 v 4200

There is a quality diference between the cells. The IB handle the high charge and discharge cycles 6 more times than the sanyos.

Remember, we uses sanyo cells so i know the failure rates down to a "t".

So that your notion that the sanyo cells are a better quality cell is now gone.

I have the proof and feel free to pm me for results. I am not able to give out some specific info but the rest your free to have.

Now why do we do this?? As a Multinational company, our reputation is on the line with the quality of the cells we have in our batteries. So we undertake varios tests on many types of cell as our cells are subject to loads in excess of 20c at times to preform the task at hand.

We are the only company which offers a warranty greater than 12 months on our batteries for trade use so i do know what im talking about.

PS its great having a R&D department who lets me do these "Tests" for reseach.