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Can I replace the rechargeable internal battery in my Garmin Pilot 550c unit?

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The battery can be replaced. You'll need to take the unit apart and look at the ratings and physical dimensions of the battery. There will be a part number on the battery but it will be specific to the manufacturer of the battery. The rating numbers you are interested in are the mAH and voltage. You'll want to find a battery that has the same voltage and at least the same mAH rating or higher. The higher the mAH rating, the longer the battery will last between recharges. Make sure the new battery will fit inside your GPS. There will probably be a plug on the old battery that was in your unit. The new battery may only have wires. You can splice the old plug on the new battery, just make sure you get the polarity correct.

Good luck!

- Jim

Posted on Jul 10, 2008

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My battery is 2 year's old and is now only lasting 30 minutes after fully re-charging.


Two years is actually pretty good for a rechargeable battery in regular/constant use.
Lithium-ion rechargeable batteries have around 500 recharge cycles and then will loose capacity very quickly as for your unit.

This internal Li-Ion battery will now need to be replaced.

Hope it helps.

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Did you try replacing the batter? I think that is the problem with this unit...

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I has the same problem with a streetpilot 540.. It wouldn't turn on, even once charged. There was no reset button under the serial number. However, prise off the grey plastic square plate on the front panel which goes around the screen. ( there's even a little space for your fingernail under the Garmin logo). The reset button is under that plate. Press that with a screwdriver then turn on. My unit turned on once reset.

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THis battery will work in your C330 Garmin. I have had it in my unit for 3 years now without any issues.
http://www.etronicspal.com/132805.html

Just open the unit and splice the wires, and use some electrical tape. Good as new.

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1 Answer

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The GPS 12 has an internal battery soldered to the board inside the unit.
I have replaced about a dozen of these over the years,
The problem is caused when the unit is stored for a long time without batteries.
The internal battery is not a rechargable.
You have to use a screwdriver in the crack that joins the 2 parts of the case and break the seal to split the case open.
This will of corse render the waterproofness of the unit void.
You then have to unsolder the internal battery from the board and find a replacement.
It is a tagged lithum battery, I can't remember the model at the moment.
Inside you will also notice the surface mount Intel 386 Chip. which is the main processer.
This has nothing to do with the battery but I found it interesting that a chip in a computer from the mid 80s worth over $3000 then, still has a use.

When you have soldered the new battery into place you need to either glue or tape the unit back together. Be careful not to damage the other parts around the battery.


Always keep charged batteries in the unit when not in use.

Hope this helps.

Alan

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1 Answer

My garmin c330 will not run it had said battery low. Even in car lighter it will not stay on. When I push the power button it will power up and shut down right away


The Garmin C330 has an internal Lithum Ion battery that needs to be recharged. Use your USB cable that came with the device to connect it to you computer. The computer of course has to be on. Leave it connected to the computer all day or over night. After that time it should be charged completely. If it is not charged after that time the unit will have to be returned to Garmin to have the battery replaced.

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1 Answer

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I have a 100v A/C power / charger unit for my garmin C340 GPS that I use to charge my Garmin's battery every day. I can use thj adapter to run the GPS, or just turn it off and let it charge the GPS. But it connects dirctly to the Garmin GPS unit, not to the cradle like the Cigarrette lighter unit does. .

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There is a reset button on the unit

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