Battery drain with Navigation software [solved]

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Hello everyone,
I've noticed a strange issue:

I've connected my device to my car charger and I've used Copilot 8 two times: one this morning going to work (25 minutes of trip) and another going home this evening (25 minutes again)

I've found that even if the device is connected to the charger, after 25 minutes of usage of Copilot, I've noticed a 4% of battery comsumption!!!

I've retried again this evening and I've noticed this again!

I remember perfectly that with other HTC Devices (Kayser and HD2), I've charged and used the device without battery consumption.

There is someone that noticed the same things?
Any suggestion, please?

I think it's not acceptable to have my Desire discarging during a (long) trip!

Sounds to me like your car charger isn't putting out enough power to keep the device charging whilst in use.

Yes, I hope this is the matter.

I've ordered another original HTC charger. I'll update this thread as soon as I receive it.
I'll try to enable GPS and make a simulated trip using the home charger.

Originally Posted by FloatingFatMan

Sounds to me like your car charger isn't putting out enough power to keep the device charging whilst in use.

Yep, seems the probable cause. I used to have same issue on another device used with a cheap low (500mAh) power on it.

The charger I'm using is original HTC charger for my old HD2.

I'll try with the new one.

Thanks to all of you for your help!

Originally Posted by FloatingFatMan

Sounds to me like your car charger isn't putting out enough power to keep the device charging whilst in use.

yeah i think ronnyuk already explained it couple weeks ago, strange but seems to be true unfortunately

I've had the same problem. I cant be bothered to find my own thread where I explained it, but if feel free to do so.

I had the same with my Xperia X1 using TomTom. I was using a cheap no-brand car charger from Maplin.

When I bought an official Sony Ericsson one, the speed of charging improved drastically.

As an aside, the cheap no-brand charger eventually ended up killing my mp3 player and making my phone stop working until I removed the battery for over 4 hours.

In 8 days from Expansys I'll receive the charger for my device. I hope to solve the issue.

As I wrote in another forum, another user had such an issue with an Acer Liquid, while I didn't using a commercial car charger I bought months ago for my iPhone (it's a "LoveMyPod brand, with two USB ports).

Didn't try it with Desire yet, but as Floating said, I suppose it's a matter of howe much power the charger is providing