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I am very interested in the CBA II.

I have two questions/concerns:

Concern # 1: I heard (from an internet forum) that you will have a 160A/500w continuous rate Add-On for the CBA II.

The reason why we (R/C car guys) are looking forward to this is because we discharge our packs at 30 to 35 amps. Now, a 6-cell (sub-C) IB or GP battery can be rated 3700 to 4300 mah nowadays, which makes the 150W somewhat of a limitation.

In your FAQ, larger batteries than 3.5 amp (such as a 6-cell GP 3700 or IB 4200) max out at 100 Watts, or roughly 14 amps... Which is why the 500w continuous rate I heard about sounds very promising. Heck, at 250w, then I could already discharge at the 35 amps that I want!

Concern #2: Most dischargers I know can discharge at a CONSTANT amperage (say 35 amps). Is there no way, via a software modification, that a discharger can be progammed to "simulate" the actual amp draw of a motor of a car in a race?

You know, something like a pattern of 35 amps (or more) for 2 seconds, followed by 5 amps for 2 seconds, then 10 amps for 1.5 second, and then the cycle repeats itself, maybe even with a half-a-second with zero amps (simulating braking, for instance).

This way, the discharger would simulate what a battery may actually go through while in a car (long straight at 100% throttle, medium speed corner at 1/4 throttle, high speed corner at 70% throttle, full braking with (obviously) zero throttle...).

If that could be done, then that would be ABSOLUTELY FANTASTIC.

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For John: I know your wife didn't allow you to get the CBA, so here's my tip for you: don't go googling about the CBA because you'd end up salivating.

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ORIGINAL: Alfalfameister

I am no engineer (I mean, see my spelling and punctuation to verify! Heheh! just kidding! I love "yous" guys!), but here's my guess: a faster charge (say, 1C or more) can increase charge acceptance? Kinda like putting air in a container (compressed air)... the stronger the pressure to put air inside the container, the higher the psi can be. If you're just "trickling" the air in, then it won't be as compressed: you would end up filling the container, but not compressing it much.

Maybe a slow charge (C/10) and a fast (C/1) is kinda like that. Remember also that the batteries were discharged IMMEDIATELY after charging. I mean, what if I charge two (hypothetically) identical batteries, one at C/10 (14-16 hours), and the other at C, and let both SIT for a few hours, or even overnight after charging... maybe they would "equalize".

Right after charging at 2C, the voltage is rather high, but was slowly going down (in millivolts) as soon as the charger is stopped.