Originally Posted by Danny/SMC
If you use Lipos in types of racing where speed/power is critical then you will need to maintain your Lipos properly to keep them running at there best. This means you will need to discharge them under high amp loads to keep the IR low and voltage as high as possible. Lipos have memory and need to be cycled at high amp loads to keep there performance level. For those playing around or race where speed is not critical then recharging them and not doing anything special to them will work.
Danny, Iím glad to hear of the news of the SMC Lipoís being available in hard cases and look forward to picking up a set or two. Any idea on the street price on those? Iíve always had good luck with SMCís pack in the past.
That being said, I have yet to see any credible evidence or data to support that Lipo's have noticeable memory as you mentioned to warrant them being cycled at high amps load on a regular basis to keep them at the edge of their performance level from all kind of discharge curve Iíve reviewed, with cycles in the hundreds.
I'm not sure why you keep on insisting they have noticeable memory effect, when Linger ALREADY explained to you in the past that the data that you supplied previously, with the Lipoís improving in their numbers each consecutive cycle was most likely due to temperature rise/increase of the LiPo pack each back to back cycle they were put through on the turbo matcher.
I've seen one chart where a Lipo was discharged at a lower amp rate, where the discharge curve looked more normal like NiMh's (high in the beginning and falling off towards the end). However another discharge curve, at a much higher amp rate with the same pack, the Lipo's actually increased voltage later during the discharge (more than at the very beginning of the discharge curve) due to the cells starting to heat up from the higher stress discharge rate, than the lower amp discharge rate in the other test.
Iíve never seen a NiMh pack improve their performance later in the discharge curve, except in case of Lipoís, where the cells started to heat up and perform better later in the discharge curve.
That aside, if you actually have data to support the memory effect you claim with the Lipoís, be sure to include the temp of the pack at the very beginning of the discharge as well as temperature of the pack at the very end of the discharge, so we can see for ourselves, if that plays a factor. As well as beginning & ending temps, each consecutive cycles done there after on the same pack. Iím interested in hearing what you find and what is the case. I also would like to hear what Linger has to say if he reads this thread on that topic for sure.
That aside, would you be willing to supply the source of the cells you sell? Roar now states in order for their pack to be approved for sanctioned racing, that Lipo matchers have to reveal the source of their cell. The last time I asked Chad Phillips about Trinity's Lipo packs source, his only response to me was "secret!". Looks like to me that Trinity has to reveal theirs as well, as Maxamp would too, and the rest of the suppliers on the market. Thanks.