Here is a really great guide to the differences between LiPo and Li-ion battery chemistry. They are very similar but have important differences. You must always be careful when charging and discharging lithium batteries, because they can explode if done incorrectly.
The short answer is yes, you can do that because the voltage is the same and the capacity is larger. This means that the charger voltage will be correct and that the charging current will be lower than 1C, which is safe.
The downside is that it will take a long time to charge in comparison.