Now Im Pissed...

[aapje89]

What could be wrong with my gp2x, I have it for some time now, and I only had some cheap rechargebles laying around which lasted for about 15 minutes.
But I thought, ah well those are cheap batteries, lets wait for my ansmann batteries...

Thing is, now I have my ansmann 2400mah batteries but even those last for 1.5 hour or so! :blink:
Whats wrong with my gp2x???, also when I leave my batteries fully charged in my gp2x overnight, the next day it will not boot.
Everytime I have the same problem, it goes till the black or green screen and just stays there, nothing helps.

I really do not want to send it back...

 

[thelamer]

i only get about 2 hours of video max with mine with full charged 2500 mah . And about 1:45 of playing drmdx while overclocked .

I thought that was normal .

 

[Vimacs]

its not

 

[ingrin]

What could be wrong with my gp2x, I have it for some time now, and I only had some cheap rechargebles laying around which lasted for about 15 minutes.
But I thought, ah well those are cheap batteries, lets wait for my ansmann batteries...

Thing is, now I have my ansmann 2400mah batteries but even those last for 1.5 hour or so! :blink:
Whats wrong with my gp2x???, also when I leave my batteries fully charged in my gp2x overnight, the next day it will not boot.
Everytime I have the same problem, it goes till the black or green screen and just stays there, nothing helps.

I really do not want to send it back...

Then do.
I sent mine back, although mine would usually not boot up, and never lasted longer than 4 minutes, regardless of battery quality. If you can confirm with another set of rechargables that you cannot get at least 2.5-3hrs (4 or 5 for 2500's) you might well should send it back. Of course, you might want to run a few cycles on the charger to ensure they were just not undercharged initially...

 

[Alex.]

I heard of folks who clocked 6+ hours with decent rechargeables.

- Alex

 

[Wolfspirit]

Mine has always been 3 hours tops, and usually even under that while playing games with 2500 mah rechargables.

 

[thelamer]

Mine has always been 3 hours tops, and usually even under that while playing games with 2500 mah rechargables.

Yeah I want some official benchmarks becasue I really doubt that their is something wrong with mine .
Edit: the only reason I time shit is because igo on a lot of road trips .

 

[iignotus]

I probably suffer from time dilation, but I swear my energizer 2500mahs last at least 4 hours, no OC. I really need to do an actual benchmark soon.

 

[TelcoLou]

Energizer 2500's here too ... ~4 hours

 

[nickspoon]

I find I need to double-charge my 2500mAh batteries to get decent life out of them. I used to get around 30 minutes, but now I get 3 hours.

 

[Vimacs]

guys, get a decent charger...
I get ~5h out of mine.

 

[stepp]

You get 5 hours out of running say the megadrive emu ? what batteries are you using then? Im using 2400mah and i only get 1h 45 mins out of mine so something must be wrong.

As said what batteries are you using mate?

 

[ingrin]

I get about 3.5 hours out of the Best Buy Storebrand 2000's at 200 mhz (MAME - Bad Dudes attract mode)

I get about 2.5 hours out of the same batteries for video playback.
I get about 2.8 hours out of Duracell 2500's for Video playback.
I haven't benchmarked by Energizer 2500's yet, but hope they last a bit longer since I have a slow charger for them...

 

[minkster]

Just get the 2500mAh energizer rechargeables. I'd stay away from the 15 minute charger and go with the 5 hour one because you get about 25% more battery life out of it. (From what I read, the 15 minute ones charge your battery about 75%) I usually get 4 hours of gaming/videos and 6-7hrs with music (backlight turned off).

 

[Crazy Goat]

Energizer 2500's here too ... ~4 hours

Same, in a radio-shack 1hr charger.

 

[Vimacs]

I use 2500mah gp batterys and a pretty expensive voltcraft charger.

 

[Epicenter]

Fully discharge your batteries and then charge them to 100% before using them again. When I say discharge, I don't mean turn it off when the GP2x crashes. I mean leave it on after it crashes, let it keep burning through them until the screen backlight gives out. If there is still anything onscreen let it KEEP going. When it's blank, turn it off. Turn it on again, odds are it can run a little longer, crashed. Then turn it off, take out the batteries, put them in a CD Player or GBA, etc. and let it run until that device turns off. Then charge them.

If not fully discharged NiMH batteries only charge to their emptied capacity-- e.g. a battery charged to 100%, discharged to 35%, then charged to 100% will last only as long as it would at 65%. Full discharging and recharging cycles correct this.

For the record, with my all-so-common Energizer 2500mah cells and a 5-Hour or so charger, I get at least 4 hours of use out of the machine at a minimum in most tasks. I don't generally actually time the period the batteries last since I'm on the go a lot and don't play for very long periods. But in the last time I used it, I pulled my batteries out of the charger, popped them in my '2x, overclocked the machine to 299 MHz, ran GNGeo and played through all of Metal Slug X, with 22050hz audio. Then I watched an episode of Reno 911 (about 25 minutes, a 720x480 XViD/Mp3 video file at >1500kbps bitrate AVI file), listened to about 8 assorted Mp3 and OGG songs and then shut the machine off, and the meter was still reading "Midum" (Lawl.) I'm impressed, personally.

 

[Series-8]

I think the problem most people encounter is that most cheap chargers, (and some not-so cheap) almost NEVER fully charge a NiMH battery. Even after a few charge/discharge cycles it will hold 90-95% for 'max' charge. A NiMH charger I've seen takes a full 8 hours to charge a 2500 mAh NiMH. Basically the faster it charges, the less the battery will hold.

Also there are newer 2700 mAh NiMH's out there. The GP2X absolutely needs NiMH or Li-ION for proper operation, no Alkalines would ever be able to power it. Its amperage drain is really high.

Lithium (AKA Energizer L-91) or perhaps those Panasonic 'Oxyride' batteries would be the only viable non-rechargeable solution (and hella expensive at that).

 

[Dzz]

I just hooked my gp2x up to an ammeter to see how much current it draws.

Booting: 500 mA
Sitting idle in the menu: 350 mA
Playing a game: 500 - 600 mA depending mostly on the sound
Running the Yeti3d demo: 550 mA
Watching a video: 700 - 800 mA

 

[Judland]

The past couple of days I've been curious as to how much run-time my Ray-O-Vac 15 minute NiMH (2000mAh) rechargeables give me. So before I turn my GP2X off, I use a virtual terminal and do a "uptime >> upt.txt" command to record how long the GP2X has been powered up.

After the batteries run out and I replace them, I tally up the recorded up times to see what I've got.

I'm getting an average of 5 hours of running time out of these batteries. This includes playing .oggs, playing games between different emulators, and some video playback of an episode of "The IT Crowd".