im very tempted by the battmann lipos but for a similar price i can get the turnigy 40c instead of 30c...

The only benefit is that battmann has them in stock...

also is there a way of testing the true c rating of these lipos???

Yes, but it aint cheap.

You can buy something called an EagleTree Data logger- it basically plugs in between the battery and esc, and measure the current ( amps ) and voltage that the motor & esc are drawing. With the PC software that comes with it ( or bought seperately, dont have one myself so not certain ) you can plot a graph of a run, and then by cross referencing the voltage droop of the batts vs the current being pulled at any one point, you can determine quite accurately the actual C rating ( just need to determine what voltage level droop you deem acceptable under load- 3.2v per cell generally is agreed as fine ).

They cost about $100, so for some people like racers or testers its a worth while investment, but for the occasional basher... might be a bit too much money to pay for something you wont use very often ( just as well my penis came as standard... ).

That and these packs sort of include shipping in the price so you may end up saving money.

As for another update, I would say I have to have at least 150 cycles on one of the packs I bought. I designated it my basher pack. Use it almost everyday. Still holding strong. I may be purchasing some of their 2s hardcases and get a review up if I do.

I have both and have seen them both naked, they practically twins.

It's ben almost 4 months since I've received my 4s 5000mah packs.

One pack shortly after receiving it I turned into a 3s pack because one cell crapped out.

Here as of recently the othe Pack took a big SHIZ, it had swollen to the point that I flat out disposed of it without trying to salvage any cell.
I only ran this pack maybe 20 times at the most.

I wouldn't buy another one !

My 6S blew a cell too, started smoking and I thought it would burst into flames, luckily it didn't.

hmmm i think i am going to buy the nano tech lipos instead.... thanks for purchasing and reviews...

Bummer. Salvageable as 5s?

Temps here have been high so my 4s has been taking a punishment and gets a bit rounded on the outer cells after 20-30 minutes. I have lost count of the amount of cycles it has been through but I am satisfied with it still. Still balances with ease, and no slag in discharge as of yet.