Question about Garmin StreetPilot c340 GPS Receiver

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Unit fails to maintain charge

Unit will not re-charge from the cig.lighter. I changed the fuse and still the same results. Could it be that the battery needs to be replaced? If this is the potential solution, will I be able to change the depleted battery myself.

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You are correct, most GPS units use a lithium ion rechargable battery, typically they loose there ability to retain a charge after about a year or so depending on use, resulting in the unit having to be always plugged in.

You probably could replace the battery on your own if you could get one, (needs to be soldered into the mainboard) however GARMIN does not sell battery's to consumers, they state that a battery can only be replaced by a garmin service tech.

Check the link below for contact info for garmin.

https://buy.garmin.com/shop/shop.do?pID=290&tab=sp340

Hope this helps
http://pchelpforanyone.blogspot.com

Posted on Mar 07, 2008

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I would take a volt meter and make sure the voltage from the lighter plug is present where it enters the unit---the cig plug also has a fuse in it--no voltage would mean the battery not getting charged--those are good battery's and should last for years.

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Hi, their is no switch or key to get it working, on this car it should start working as soon as you turn the ignition on so as your driving it should be charging.

the only reasons it may not be working could be a fuse or some one may have shorted it out by leaving the cig lighter down to long.

have a look in the glove box and see if the owners handbook is in their if it is have a look in their at the fuse box diagram and locate the fuse for the aux cig lighter then check if the fuse has blown, if it has blown their should be a spare fuse in the fuse box and it should tell you this in the owners handbook,
if how ever the fuse is ok then this means some one has shorted the lighter out and the only way of getting it working is to get the main part replaced and as this is higher car its something you wont be doing.

i would check the fuse and if its blown put the spare in or if their is no spare then it would be worth buying one as they cost next to nothing to buy.

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You have not said why that is....

Have you fully charged the battery prior to using in the car?

Using the power from the 12v plug in a vehicle will not "charge" the internal battery, but tends to maintain it somewhat. If the fuse in the end of the 12v connector plug is blown and the battery in the unit is low then this will cause the unit to shut down or fail to fire up.

Please check both, the units battery level and the fuse in the cig lighter plug and the plug that connects the unit to the cig lighter outlet.

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Nor by my battery

It is either not charged ( AC charger) or it has reached the end of its life which if used correctly is about 2 years. If the life of battery is shortened , then it is by a common practice of misuse. This misuse is to have the unit plugged to the car 12v when staring the engine.

1) it damages the battery life
2) It can and does damage the SIIRF chip, which is responsible for connecting to the satellites

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