Battery charging

[Gentleways]

The problem arises if your GPS is plugged directly into the car's USB port.
A car's USB port doesn't provide enough power to keep a GPS charged.

what sort of amps does it need then as these reading i get on my display in what the GPS is drawing etc from the car connection

 

[Willy875]

Using a cigarette lighter charger should be much better, in my opinion.
The charger in the link has a power output of 1200 mA.

Car charger with micro-USB cable

Make daily use of your TomTom easier

www.tomtom.com

 

[Gentleways]

Using a cigarette lighter charger should be much better, in my opinion.
The charger in the link has a power output of 1200 mA.

Car charger with micro-USB cable

Make daily use of your TomTom easier

www.tomtom.com

so what is that telling me please

 

[Willy875]

Your GPS should come with a charger like the one I show you in the link, so use that charger.

 

[Gentleways]

so what is that telling me please

no mine did not come with that charger even though i bought from brand new too

 

[Willy875]

This is strange because all Tomtom GPS devices come with a car charger and cable.

 

[Gentleways]

This is strange because all Tomtom GPS devices come with a car charger and cable.

well i dont have the charger but do have the cable so can you provide a charger for me please

 

[Willy875]

its charging at a variation of amps from 0.4 to 0.7 from the readings in the car

In your message, you say you have an amperage of 0.4 to 0.7, which is very little, whereas your GPS needs a power of at least 1200 mA.

 

[Gentleways]

In your message, you say you have an amperage of 0.4 to 0.7, which is very little, whereas your GPS needs a power of at least 1200 mA.

this is what i read from the car giving that to the unit, so can you get me a charger please?

 

[Willy875]

well i dont have the charger but do have the cable so can you provide a charger for me please

You have to buy it either in store or on the Tomtom website.

Compact Car Charger

Charge your device on the go

www.tomtom.com

 

[Gentleways]

You have to buy it either in store or on the Tomtom website.

Compact Car Charger

Charge your device on the go

www.tomtom.com

well that may not solve the issue??....so i could be buying another item and they wont make any change at all??

 

[Willy875]

You say that if you charge it from the mains, your GPS stays on.
So the problem lies with your car charger.

Now you decide whether you want to buy a car charger or a new GPS.

 

[Gentleways]

well that may not solve the issue??....so i could be buying another item and they wont make any change at all??

My car has a 12 Volt Battery and the GPS should only draw the current it wants and no more so not sure even that remark works as being true???

 

[Gentleways]

My car has a 12 Volt Battery and the GPS should only draw the current it wants and no more so not sure even that remark works as being true???

i am not changing mu GPS it a good one and i have 1000 poi's stored on it too

 

[Willy875]

My car has a 12 Volt Battery and the GPS should only draw the current it wants and no more so not sure even that remark works as being true???

Volts and amps are not the same thing at all.

 

[Gentleways]

Volts and amps are not the same thing at all.

they are linked in circuits V=I x r

 

[Gentleways]

they are linked in circuits V=I x r

when i have spoken to tom tom themselves they are useless have no ideal of resolution and all they want to do is sell sell sell, they dont deal with real issues when help is required.

 

[canderson]

No there is no tom tom charger as i am plugged into the car system so that is charging it, but i do get the same situation just on its own say running for indoors from my laptop

I've noted twice now that neither your laptop nor a vehicle USB data port is typically designed to produce more than 500mA of current. Especially on a Live model that requires a bit more current than normal, that can be a problem. Even the battery has 4 power wires (2+ and 2-) instead of the 2 of some lesser models.

Please find the cigarette lighter adapter that came with your TomTom, or an equivalent one capable of at least 1A output, and plug into that and see if that changes the behavior.

 

[canderson]

no mine did not come with that charger even though i bought from brand new too

Unheard of. The 825 definitely came with a cig adapter.

 

[canderson]

they are linked in circuits V=I x r

Ohm's law is pretty irrelevant here. The voltage is fixed at 5V. The current draw of the device is what it is (and that varies with its operating state, including screen brightness, data activity, etc.), and the max current that can be supplied by a particular USB outlet is what IT is.

USB-B connections are always current limited, and those operating as concurrent data connections are typically limited to 500mA.

when i have spoken to tom tom themselves they are useless have no ideal of resolution and all they want to do is sell sell sell, they dont deal with real issues when help is required.

I'm willing to be they've suggesting using the OEM equipment for charging, too. That's their FIRST suggestion from the script when charging problems are brought to them.