Has anyone tried the 6cell packs yet? I am looking at ordering the 22.2V 4300mAh 40C pack for truggy. Does the lowish 40c constant 80c burst rating not matter when running this much voltage?

I'm looking to buy some lipos for stock tc 17.5 &21.5 usgt witch ones? 5 min races.
For usgt I'm thinking 5000 40c or 70c
For stock is there a big dif from 6000 100c ,6500 60c, 7200 60c
Any help/info would be great

Can't say how it would work in a Truggy but I use the SMC 6S packs in a buggy. But I got the 3600's since I didn't feel I needed the capacity of the 4300's. In a buggy with a 1400KV motor I use about 200 mAHr per minute at race pace, so that's an average of 12 amps. A truggy would be more and the peaks higher but maybe my data will give you a feel for the numbers.

That's exactly right: as the voltage goes up you can do the same amount of work at lower amps / lower C - you don't need to pay extra for high-C packs like the 1S/2S crowd. Yes 1/8th weighs more, so does use more power... but running at the higher 4S/6S voltages more than makes up for it.

I wish 1/10th would move to 4S (but half the mah, and use the same sized packs), while 1/8th standardized on 6S. But alas... the 1/10th racing world is still remembering their glory days running 6-cell NiCAD packs, and tries to hammer every new battery tech down to the same voltages... bah!

I have a few 5800mah 2S Square packs that i've been enjoying. My question is that charging at 1C on a balance mode i'm getting over 6600mah into these 5800mah rated packs. Tonight I manually switched off the charged after 200minutes and it hadn't shut off at capacity yet.

Am I overcharging these packs? I can understand a few hundred extra mAh going into them but nearly 1a over the rating from SMC seems like I might be potentially damaging something?

Would "Race Formula" / low-IR packs last more cycles than the "Factory Spec" packs?

I've been buying the Factory Spec 7200 2S packs for my 4wd SCT. The first couple packs lasted about 120 cycles before they started to hit LVC too early/easily, and the last pack I got is degrading around 60 cycles. Would you expect a Race Formula 6000 pack to last more charge/discharge cycles, because each cycle is chemically 'easier'? (I don't know what the right term is: a pack designed for high-C should deal with being drained by a heavy SCT easier and more often?)

If that doesn't make any sense, I can get another 7200, or maybe try another brand, for science! (nano-techs seem well reviewed as well)

I've heard that many chargers discharge the high cell and charge the low cell simultaneously. Your charger may over report how much it is putting in during the balance cycle. Does it still overcharge during a non balance charge?

The next time you drain the pack, check the voltage in each cell. If they're both 3.55 volts or more (as long as they're about the same) your problem may be elsewhere. But if one cell is .15v or more lower than the other then your charger is spending all the extra time trying to balance out the differences. I see the same thing when some of my packs start to go bad: the battery comes off the charger with both cells the same voltage... but by the end of the run one cell could be 0.2v below the other.

That screws up your LVC as well: it won't be cutting in as early as it should (because the one higher cell makes the overall voltage look OK to the ESC)... so that one cell keeps getting drained too far, damaging it and making the voltage difference worse over time (which takes longer for a balance-charge to correct). If that is your problem... then the only way to fix it is to buy another battery.

I'm using a Hitec X4 and all the voltages were coming up the same and all cells are at 4.2v's so should be ok right?

I appreciate the input guys.

Have you verified the voltages with a multimeter? I've got a charger that isn't well calibrated on one of the channels and over reports voltages on the second cell.

So I messed up bought some real cheap $20 lipos seems like they all are junk not working...so now I'm looking for new lipos I've read SMC are really good lipos check out pricing not to bad but after shipping its around $100 for two 3s lipos...I check out hobbyking turnigy about tha same price $40 a battery not sure about shipping cost...Guess I just want tha best deal and cheapest... Are SMC overkill if I'm just useing for bashing ??? Any help would be appreciated???

For that little in price difference, why not go with an American company that will support their batteries. The SMC are not overkill, they are just a great battery for the price, bashing or racing.

You need to raise your LVC. One cell in the battery is overdischarging for this exact reason. Once a cell is damaged, not much you can do. It will always end up grossly unbalanced after use.

For me that extra couple of minutes of runtime just isn't worth the risk of creating a worthless battery. I tend to baby all my batteries and most are used in racing so they never get close to LVC. But I set my LVC high and when I'm bashing, I stop as soon as LVC kicks in.

I've had really good luck with SMC batteries so far. A couple of 2S and one 4S. What I like is the choice of connector right from SMC.

Time will tell if they hold up. I do have a Thunderpower battery that's probably 5 years old with tons of use that still has 5-6 m ohms of resistance per cell when measured on my icharger.

Has anyone done a comparison of the SMC Extreme 2S 100C with LRP and Orca?

Why aren't the extreme racing shorty packs (ones with the red labels) on the site anymore? The full size neither? I just bought one not too long ago and when I looked again I can't find them.