my 5s 4000's are doing fine in my buggy with the 1515 2.5d one pack has 30 cycles, other has over 10 and no issues right at 20 minutes runtime on the track, i wish i would have gotten them back when amain did the $80 special but oh well dealer cost is only $5 more than that special, so its all good.
has anyone lost or puffed a cell with theirs? i noticed that under VERY hard running, and I mean HARD running, that the whole battery expands ever so slightly, its not swelling so to speak, it also didnt feel as hard as normal not squishy or crunchy just slightly soft, i dont guess it matters ive put another 20 cycles on the pack and its never out of balance, but every now and then i do notice this, temps are always in the 110-115 range no matter how i drive so i know they not over heating. I would guess im at their limits....
i have charged one of mine at 6 amps before to hurry it up before the main once and it didnt come off the charger any different than normal 1c charging , all but that time i only charge at 4 amps.
Well it turns out Im not going to be using them in anything. I bought it to use in my brushless Kyosho Mini Inferno, but I ordered it when I didnt have my chassis in front of me to measure and it turns out the battery is too big to fit in the chassis. DOH!!!