DO NOT TAKE THIS AS GOSPEL IT IS MY OPINION ONLY
For the Typhoon H 480 only.
All LIPOS may exhibit a bit a swelling in the label area do to the packs not being 100% flat when made, or the label/heat shrink covering not being applied properly.
I have had to dispose of one battery due to getting puffed or swelled. I gave up on it for two reasons.
1) One cell would not balance with the others. This was even after discharging it on my charger and recharging at 0.5 amps, cell was always behind the other three by .3 volts to .5 volts. (Not my charger's fault) Resistance was way off too.
2) The battery would no longer smoothly insert into the battery compartment, I would have to force it in.
Lipo was destroyed and put to rest.
If we were talking a ground RC car or something I may have still used it. Just not in things that can fall from the sky.
PS: if I can find a LiHv battery chart I'll post it.
For the Typhoon H 480 only.
All LIPOS may exhibit a bit a swelling in the label area do to the packs not being 100% flat when made, or the label/heat shrink covering not being applied properly.
I have had to dispose of one battery due to getting puffed or swelled. I gave up on it for two reasons.
1) One cell would not balance with the others. This was even after discharging it on my charger and recharging at 0.5 amps, cell was always behind the other three by .3 volts to .5 volts. (Not my charger's fault) Resistance was way off too.
2) The battery would no longer smoothly insert into the battery compartment, I would have to force it in.
Lipo was destroyed and put to rest.

If we were talking a ground RC car or something I may have still used it. Just not in things that can fall from the sky.
PS: if I can find a LiHv battery chart I'll post it.