After some twelve plus years I now have an issue with my most trusted TomTom Go 600, the battery has died. You may be asking why am I bothered as Google Maps is available phones, updated regularly and works, some consider it better than many dedicated SatNavs, TomTom or Garmin to name just a couple. Even my daily driver has an up-to-date SatNav which I use, a lot. This TomTom Go 600 is used in my Mustang and sits on the centre console in a weighted mount setup. I need guidance to virtually any location where I can’t see my own house. I honestly get lost anywhere, even somewhere that I’ve been before, often a standing joke with friends and family. I prefer to use the TomTom instead of the phone with google maps and the smart watch on my wrist for turn by turn notifications which is great, but the phones battery gets drained before I even get to the location. At car shows most of the phones battery is used up with the camera usage and then a little bit of reading while sitting in my chair. I often take a backup charger with me just in case I need to charge the phone, but it’s a pain. It’s often easier to plonk the SatNav on the console, plug it in so there is no battery worry on the phone. Besides, the screen is bigger on the TomTom and the sound is louder for directions.

On this device the battery lasts about one hour when not plugged in, or I can’t be bothered to plug into the cigarette lighter for the shorter trips. The battery no longer holds a charge of any sort, often to the point that even with power from the cigarette lighter, it can’t hold the power so the unit has shut off on me a few of times. Without external power, the device hardly has enough power to show the empty battery symbol and just dies, not even a proper shut down.

After a quick bit of research I found video on YouTube as a tutorial on how to change the battery, it was worth a go. Why go to the bother, just get an up-to-date model? I certainly could upgrade, however this model has free map updates for life! After twelve years, every few months I get a map update. This device owes me nothing, so a replacement battery and some cheap tools from Amazon £20 all in, would be worth a go. The battery arrived the next day along with the tools needed to take these sort of devices apart. I also needed a pen knife, a blunt one which is sometimes used to open packages etc.

Disclaimer: If you attempt this repair, it’s of your own choice and I won’t be held responsible for any damage or loss.

My experience of the practical wasn’t so easy as the video suggested, so I thought I would document what I did to fix it. I don’t know if the models are designed differently after a while, but my internals were a little different to the YouTube video even though it was the same model designation.

The first step was to separate the two halves of the device, this is where the plastic tools came in, well to start with anyway.

The two parts we so well together I had to get the penknife to get between the two halves and lever them apart. As I worked my way round I used triangular picks in various place to stop the device snapping back together again. There are no screws that hold the two halves together. As the device separated I heard a couple of little snaps where the plastic catches has snapped below right. I was not brutal in fact rather careful, perhaps the plastic is getting brittle with age. The face has a little piece of tape which holds the screen ribbon in place just before the connector itself to the main motherboard.

With the screen out of the way the plastic flat ribbon needs to be eased out of the connector by moving the white clamp towards the ribbon which will release the pressure on the clamp and allow the cable to be pulled out.

The two halves are now fully separated, put the screen to one side out of harms way. The below image shows one of the additional sprung connections at the tip of the screw driver. These are delicate and transfer the touch inputs of the screen to the main board. Hence the flat metal plate that is on the back of the screen.

Next we need to disconnect the speaker and the battery connections, using the plastic tools separate the two plugs.

Get yourself a nice set of screw drivers to remove the five flat cross head screws holding the circuit board to the back case.

With the screws removed lift the top of the board, the opposite to the connections at the bottom. With the board elevated you can then slide the bottom half of the board out of the case. With the board also put out of harms way the battery is exposed at the bottom. The battery will need to be prized away from the case as it’s stuck in place with double sided tape. As with all Li-ion batteries be very very careful.

The old battery and the new one side by side. The new battery on the left has a slightly higher capacity which should retain a little longer life. the original battery is on the right.

In the box supplied with my battery was fresh double sided tape, which needs to stuck on the back to hold the battery in place. The new battery is slightly smaller but still sits neatly in the area. Make sure that the wires are near the speaker and not the opposite end or they wont be long enough to connect.

Take the circuit board and align the bottom of the board to openings. Gently lay the fish the two sets of wires through the hole in the circuit board and then lower the board down into place. Align the screw holes and lightly screw into place. This will allow you to pick the device up and make sure the connections are fully located correctly. Once you are happy with the alignment fully tighten the five screws, do not over tighten. Next re-insert the battery and the speaker cables to the back of the board.

Hold the screen near the main circuit board that will allow the flat cable to fall above the ribbon connection. I couldn’t take pictures at this point as I needed both hands. While holding the screen still gently guide the flat ribbon into the opening evenly. Do not force the ribbon or it will kink, the ribbon should just slot into place. Once the ribbon is fully inserted in place, slide the white clamp away from the ribbon to clamp the ribbon in place. Both the screen and the ribbon should now be connected. Very lightly pull the screen to make sure the ribbon does not pull out.

Lay the screen onto the case to align the two halves again. Make sure that the sprung connectors are not damaged be fully lowering the screen down. Starting at the bottom snap into place and work up the sides to the top. As you snap the case together make sure the connections at the bottom are stay correctly aligned. The broken clips were at opposite ends of the device so it didn’t prevent re-assembly of the unit.

Now turn the device on.

Now check that the screen is still touch responsive once the unit has fully started.

Once everything was working I was able to give everything a clean and full charge. The difficult part was separating the two halves without damage. The YouTube video showed it almost falling apart which wasn’t the case. The plastic tools weren’t quite man enough to separate the halves, hence the use of the pen knife for a little more robust leverage. Once apart it was pretty simple to remove the board, replace the battery and re-assemble.

Total time taken: 40 mins

Difficulty Level: 4 out 10

Conclusion: the only real difficulty was taking apart without damage and re-aligning the motherboard ports to the bottom of the case.