My kids have this wonderful radio called Lunii , a “story maker”. That’s great, but the battery is not big enough and I decided to take a look.
The standard battery is a classic 503035 that you can find anywhere on internet for a few euros. It’s a 3,7V – 500mAh battery.
Good for us, it had a big brother, the 103450, a 3,7V – 1800mAh battery. You can also find it easily on internet.
Replacing it was easy (make sure of the polarity of the battery before replacing it, red on red, black on black). I will do a 3d-printed box to maintain it inside the Lunii.
Opening the Lunii by removing 4 screws
My son have a nice fox night light, that he really need every night. Unfortunately, it needs batteries (3x AAA) and as we forget to switch it off every morning, it’s kind of battery consumming. (Rechargeable battery is not an option)
So I look into my stock of “Let’s keep it, it may be useful someday” and found a perfect 220V transformer !
As I didn’t want to damage the night light, I decided to keep the option to use batteries : I need to make fake batteries.
Adapting new fake batteries
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Cutting the end of the 200V transformer, soldering a screw at the end, and adding an anchor