Klugesmith wrote ...

Battery University is an authority I respect for info on LiPo and other batteries.

"Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a special charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some Li-polymer in a foil package to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package. Li-polymer is not limited to a foil package and can also be made into a cylindrical design."

That source echoes what others have just posted in this thread:
Charging Li-ion batteries:
Charging batteries with a power supply:

I have done the latter twice in the last 2 weeks, recovering some Nikon batteries that had sat in cameras unused for many months, and had terminal voltage so low that Nikon charger wouldn't start to charge them. (Maybe that was due to internal, active, reversible protection circuit ? ) On the bench, their I/V/time behavior was right out of the textbooks cited above.