I never turn it off. I think my battery life is fine though.
I use the internet and play online a lot so I don't see any reason to turn it off. Other than that, I'm extremely conservative with the power I use. I use sleep mode for long pauses and turn the system off if I'm not going to touch for like 20 minutes.
The battery timer is notoriously inaccurate. If you check it with the WLAN on and then off and then on again repeatedly, you'll get several different results. And anyway, it only shows an approximation of how long the battery will last in an idle state, not while using say the UMD drive, or when you are online.
The WLAN chip only starts it's heavy drawing of current once it starts transmitting when you go online. It uses almost no battery charge when it's idle.
If you feel happier turning it off, then by all means do so, but it's not going to affect your playing time if you leave it on.
The only time I really recommend you turn the WLAN switch off is when you are on an airplane so you don't risk breaking the law by going online.
I have to agree with Bone, the radio chip is put into sleep mode the same as the Ethernet chipset that will be reactivated upon the reception of a trigger signal in order to prevent needles energy wasting. More and more components are using this technique just to keep the battery longer in action. On all these years and all my international travels my PSP's accompany me they have never have let me down and I always leave the WIFI switches on just to prevent the wear and tear of those cheap and vulnerable microswitches.... We could go into a technical battle about the pro and con's, but this is beyond the scope of these forums.... But if you really want to be right be my guest, I actually understood the question as having the parts last as long as possible without having costly repairs, and correct me if it is cheaper to replace a battery that almost anyone can do with a little effort than spending cash that could have been prevented. Does your life really depends an a few minutes longer play ???
The wifi chip only uses current when you are actually online, so leaving the switch on and doing something else will have negligible battery drain.
you are right! bone..
I DOES NOT MATTER
**i tested it with the psp 2000 and psp 1000
wifi off-- i got 7 hr 50 minutes
wifi on-- i got 7 hr 50 minutes
wifi off- i got 5 hrs and 30 minutes
wif 0f- i got 5 hrs and 30 minutes..
**the settings is the same through out.. movie playback were used during test.. **
i guess i found the asnwer to my own question... as.. .. um.. i guess having a bigger battery helps the psp1000 to last a few hours longer...