Honestly, I've only recharged mine four times from the first time I started this hobby... so that's like three months now
I flew every week-end without exceptions, and sometimes during weekdays. I always leave it to recharge overnight and let it "dry" completely before recharging!

Don't use it more than you need, just a few seconds to start the engine and then immediately remove it. It should hold its charge for a long time, at least that's in the weather conditions of where I live :P

That't to say, you will definately not need to recharge it everytime you go to fly.