Electronics → Li-ion battery charger compatibility question

I have an RC Quadcopter with a 7.4v 650mAh 14500 Li-ion battery, I want to replace the batteries with higher capacity ones.
I found these, they're identical in all the details except with a higher mAh.
My question now is, would the old charger work with these? The charger's output is 7.4v 800mA.

Any help would be appreciated, thanks!

It should work fine.

What he said! will just take a bit longer to charge..

Thanks guys!
One more thing came up though, my old batteries are labeled "BFN Li-ion", and the new ones are labeled "TR Li-ion". Do these terms make them different in working/charging?

To be honest.. Never heard of those terms.. Not sure what the difference is if any.

those are just abbreviations for the manufacturers names.

The correct answer depends on two things. I suspect the original batteries are the high-discharge current variety. Replacing them with batteries of a lower max discharge rate will either not work very well or result in damaged batteries (potentially exploded batteries too!). Also, the original batteries may have a protection circuit that cuts them off if the the battery gets too low to protect them from damage. The new ones you cited do not have this, so unless there is something in the Quadcopter that cuts off the power you risk damaging the batteries.

As for the brand, Ultrafire is a questionable brand and those batteries are probably more lik 700mAH in real life. I've seen lots of reviews that the Tenergy 800 mAH hour batteries work longer than these when used in surefire flashlights.