UPDATE: An electronics designer, Shamus Husheer, from the UK contacted me. He found another, cheaper, solution to fix the Lumea battery Charging issue. You can find the post here.
A little DIY post that I like to share with you guys. My wife bought a Philips Lumea a couple of years ago. She didn’t use it for almost two years and it doesn’t charge anymore. If you don’t charge the batteries every 3 months, then the batteries are dead (as mentioned in the manual somewhere… ).
The problem with the Philips Lumea is that you can’t replace the batteries, the product is fully closed and you can’t buy a replacement battery pack. With a retail price around the € 350,– I thought it was worth to see if I can repair it. So I opened it up to see if I could replace the battery pack. And yes it’s possible.
Below a small guide how to open the Philips Lumea (use it at your own risk, if you don’t know what you’re doing, ask a specialist), creating the battery pack and replace it. You will need to following items to create the battery pack:
- 2 Rechargeable Li-ion Battery UR18650W 3.7 1500mAh batteries with C type Tabs
- Soldering Iron
- Soldering Tin
Opening the Philips Lumea
The Lumea is closed pretty tied, first you will have to take off the lens cover (1). This way you can wedge something small between the seal, starting at 2, and work you way down to 4. Take your time for this, because there are some thin wires right beneath the cover, between number 3 and 4, on this side of the Lumea.
Disconnecting the battery pack
Ones you opened the Lumea you can’t take out the battery pack yet, first you will have to disconnect to PCM (protection circuit module) wire from the circuit board. You can just pull out the tiny connector shown in the image below. When done, you can disconnect the black and red wire on the battery pack itself and slide out the batteries.
Creating the new battery pack
As mentioned at the beginning, you will need 2 UR18650W batteries with C type battery taps and a good soldering iron . The batteries may come pre-charged, so keep the covers on the positive side tabs until you are going to solder it.
We need the PCM wire for the new battery pack, so first you need to desolder the wire from the old battery pack. The wire is also glued in the center, use a small knife to cut it loose.
New battery pack creation in steps
- Align the batteries
- Trip the long soldering tips to which you will connect the main wires and fold the other 2 tabs.
- Solder the tabs and connect to PCM wires as described below
For the new battery pack, we need to solder a positive and negative side to each other. Trim the taps a little so they can overlap each other when the batteries are taped together. Then apply some tin to each tap where they make contact. Place the 2 together and apply some heat to it to solder the two taps.
Next we need to reconnect the PCM wire, just simply solder the white and black where to the negative side of the batteries. When done you will have a similar result as below. As last we need to adjust the taps for the main wires from the Lumea. I have chosen to cut them to the right size so I could reconnect the original connectors, but I have to say, they sit a bit loose, so you might want to solder them also.
When the battery pack is done, al is left the reassemble the Lumea. First reconnect the black and white PCM wire, then the red wire and as last the black one. You might see a small spark when connecting the last wire, this is caused by the capacitor that will recharge.
Reassemble the cover, starting at 4 and work you way up to number 1.
Disclaimer: The information in the post is provided as is. Use it at your own risk. I assumes no responsibility for any loss of life, property, equipment, bodily injury, money, time or other incurred directly or indirectly by using information on this website.