[HTC EVO 3D] Formhault:
Hello people!

I have a HTC EVO 3D GSM (signature for specifics, for what it's worth - I doubt it matters for the thing I'm about to explain, anyway).

I know this post is very long, but please allow 5-10 minutes of your time to go through this.

Charger : original HTC charger (1A output).

Cables : two BlackBerry microUSB cables, one is 2 inches shorter than the other. The HTC one broke after two weeks of usage, these BlackBerry ones stand up for the fight even after 6 months of abusing.

Extension cord : HAMA. USB 2.0, maximum speed 480 Mbit/s (that's what it says on the box). "Additional shielding for a good reduction of electromagnetic interference" -> so it's not double shielded (in case that matters at all). It's gray (for what it's worth). 1.8 meters long.

Battery Monitor Widget (BMW) may not show power consumption accurate while deep sleep, but it works fine when the phone is used and, THANK GOD, when CHARGING. So, with that app, I monitored the input current...

So... here's my little personal test.

Battery was at ~81%, so the input current wasn't varying because of the battery level, but because of the (****ty) cable(s). Throughout the test, the battery level got up a bit, but I tried to keep it steady at ~81-82 at the beginning of each test.

CPU @ 192 MHz - 1.51 GHz, Interactive governor. No undervolting, so the table ranges from 800mV (192 MHz) to 1175mV (1.51 GHz). Nothing changes, anyway, even if I undervolt it -75mV, so the voltage has nothing to do with it (maybe during * tests, it could mean a difference of a few miliamps, but it's not a viable solution).

Charging tests # - Wi-Fi off, Data off, Screen on Auto, off until I wake it and check the current with BMW.

Charging #1 : just with the BlackBerry cable, no extension cord. 1 minute after plug in : +800mA. 2 minutes after that : +789mA. It went up to 82%, so I discharged it to 81% and carried on with the next test.

Charging #2 : BlackBerry cable + the HAMA extension cord. 1 minute after plug in : +489mA. 2 minutes after that : +485mA. Notice that the input current was almost sliced in half.

Charging tests * - Wi-Fi on (signal ~80%), Data off, Screen on lowest brightness. Playing Star Legends (basically, it's opened, I'm not touching anything, any graphics that are going on there are hardly intense, nothing GPU-hunry is going on, so it's just sitting there). Media volume = 1.

Charging *1 : just with the BlackBerry cable, no extension cord. 1 minute after plug in : +413mA. 2 minutes after that : +471mA.

I couldn't resist and entered a PvP, so intense graphics were somewhat there, also touch points and all that... The current input was around +312mA.

Charging *1 : BlackBerry cable + the HAMA extension cord. 1 minute after plug in : -11mA. Notice it's discharging, but at a slow rate. 2 minutes after that : +31mA. So it started to actually draw some current from the charger, so I let it that way for another 2 minutes, and it's got to -5mA again. So definetly no charging here :) .

Normally, without charging, the consumption would be of about -513mA... -622mA... Same conditions : Wi-Fi on (~80% signal), Media volume on 1, lowest screen brightness, player just sitting there (in Star Legends).

I did tests with Asphalt 6 (no Wi-Fi, no active Internet connection), too. Same consumption... Same sh*t... I was thinking the Internet connection is what kills the incoming current the most (it turns out it hardly is).

So... Has anyone ever experienced something similar?! I really need an extension cord, lol.

----------------------------------------------------------------------------------------------------------------

I was wondering if a more powerful charger would solve this, but after reading THIS, I think there are hardly any chances...

I had another HAMA extension cord before. White, with double shielding, same lenght (1.8 meters)... Same current readings... I brought that one back to the store to get my $7 back, and here I am, 1 week later, having another one, in hope that the previous one was broken and this one is not. Haha...

So it's not the cord itself (bad company, lol), but the fact that there just is another connection the current has to go through...?!