Behinner with BC6 [Archive]

Joyo

08-11-2007, 06:26 AM

Hi all, I have a BC6

My first charge was my DX7, which has a NiMh 1500mah.
I accidentally charged at at 5A, and got very hot.
I guess I fast charged it, have I stuffed up the battery?

What should the full voltage read in the DX7, I only ended up getting 10.4V at full charge.

Thanks for all your help.

Also, is it generally true to charge lipos at 1C, discharge at 0.5A
Should I do the same with the Nimh TX battery.

Thanks again

Sherpa FE

08-11-2007, 06:38 AM

With the wall charger I get mine to 11.8

RC Accessory

08-11-2007, 05:41 PM

At that fast of a rate on a stock tx pack, the pack probably false peaked so it wasn't fully charged. That pack should be charged about 800 mah to 1.2 amps is a safe range.

Lipos, charge at 1C. Don't discharge your lipo's on the charger, there is very little reason to do so.

Sherpa FE

08-11-2007, 10:38 PM

Hey Evan,
ANY word on when the balancer is coming out for the Xtrema, Its killing me not having one at all.

RC Accessory

08-11-2007, 10:48 PM

You mean like the one I have in my hands right now??? :)

I just got one of the prototypes in to test for TME.

Sherpa FE

08-12-2007, 06:45 AM

Dude, DONT make me fly home from Kuwait and come see you and steal it...LOL :YeaBaby::YeaBaby:
Well gimme some skinnny on it. How does it look, feel, work???
Oh another Q for you, what would be your personal preference for charging 3s lipo's on the Xtrema, parallel, or series, and how do you set up the box?

Joyo

08-12-2007, 08:06 AM

Hi RC accessory

Thanks for the info.
So that means with charging the NiMh battery at 1.2A, that's really only 0.8C, is that correct.
So have I damaged my one for fast charging it at 5A?

So is 0.5A a good discharge rate for the NiMh.

Thanks again

RC Accessory

08-12-2007, 08:24 AM

I will see if I can take a picture of it for you. Now this is a PRORTYPE. That is important because the unitis not fully completed in the software nor the board design.

It is a cool balancer first off. The bleed rate is 450 ma. That is a good number as it will work on larger packs as well. The e-Station PB-6 has a 500 ma discharge rate.

The TME balancer has a data port that also uses the Xtrema data cable. When hooked to a PC via USB or RS-232, you can monitor the cell voltages through a terminal application like HyperTerminal. I have to update the Prolific USB driver on my laptop to see if Hyperterminal really can be used.

What the software shows you is each cells voltage with the ability to charge the delta peak settings to your liking. Now, first off, no balancer has this functonality. The reason for it is the A123 Systems. Their variance in cell balancing is much wider than a lipo. Lipo's need to be much more tolerant so this is adjustable. But there are other balancers that do both and share the tight delta peak for both.

Another feature is that you tell the balancer if it is a lipo or an A123 via a jumper on the balancer. What this really does is change the LVC appropriately for a lipo.

Now for the deep dark TME specialty stuff. lol...

To use the balancer on the Xtrema where the 2 are integrated, you will need the interface board for the Xtrema. The Xtrema and balance will commuicate much more than cell voltages and the ability to terminate the charge in a overvoltage scenario like most do. The charger will be able to determine the bleed rate of the balancer depending on how fast the charger is charging and how far the imbalance on the cells. The max bleed rate is 450 ma, but the actual will be less because the charger will tell the balancer what is should be based on the condition of the pack.

More cool stuff to come....

RC Accessory

08-12-2007, 08:26 AM

Joyo

08-12-2007, 08:40 AM

Hi RC Accessory, thanks for the info.
That's great help.