Like the title says, I was messing around with my new keychains and RDC before I get my implant installed, and I wondered if the reverse wireless charging also produced a LF/HF field.
Turns out, yes it does.
I held the card about 2cm from my Pixel 8 pro with the Battery Share feature turned on, the green LED lit up for a second and then turned off, along with the “Battery Share” toggle.
I tried to turn it on again with the card present, but it won’t.
I confirmed with my flipper and keychains that the LF part of my RDC is fried. RIP
I have since found a post talking about the same thing happening with official MagSafe chargers, but I wasn’t aware of this as you can tell.
Maybe a warning might be handy for future customers so they don’t run into the same issue?
I’m also a bit scared of frying my implants now, I know the coil is much smaller and won’t match as well with most readers/chargers and thus will get less energy, but do I need to be careful to avoid wireless chargers?
Wow. I hope it doesn’t actually harm LF implants. I would hate to see something like that weaponized. Maybe someone can do a test if they have a spare?
If I remember those old threads right they aren’t supposed to be able to do it, and proper compliant chargers aren’t an issue, but that doesn’t stop me from using my non-chipped hand to pick up stuff off them
HF implants should be safe I believe, but I’m still wary
I don’t believe I’ve heard of anyone actually killing an implant with them fortunately, just the diagnostic cards. My guess is you’d have to put a little effort into getting it to couple like you would a reader, so it’s a bit harder to do accidentally, if it’s even possible
Which ones are you talking about?
Generally readers shouldn’t be using enough power to damage a chip
I believe most of those are either UHF, or those weird magnetic metal strip things, and neither should impact your implants and definitely haven’t blown up my RDC
I don’t think they use a whole lot of power for those, just the fact that they’re big body-sized antennas
Yeah basically RFID chips have built-in overcurrent protection because their entire purpose is to absorb power from an induction coil in a totally unregulated way. LEDs expect very specific current control, so much that there are entire ICs dedicated to driving LEDs because they’re so finicky and sensitive.
So it’s probably the led itself that blew up right?
Is there a way for me to solder a new one in its place?
I loved playing around with it and I’d like to try and fix it if the rest of the circuit is still fine.
If you’re in the US, I believe I have a spare card at home. If you want I can stop by the post office today and send it to you. It’s not getting any use just sitting on my desk and I’m sure it’s just a few cents to ship it.
I appreciate the offer, but sadly I’m located in Belgium, so shipping would probably turn out quite expensive. If you know of a cheap way to ship it, I’d be down to pay for it tho!
If you have any spare I’ll take it!
Any color is fine, however, same story with shipping. I think an international stamp should do the trick for this though, right?
Lmk how much it would be if you wanna give international shipping a shot!
Just shoo tme your address, (Please format it exactly how i should write it on the letter). I have a ton of international stamps so i should be able to get it your way in tomorrows post.
Looks like 0603 LED’s will fit, but its gonna be a pain to get off that coating that is over the top. ill give you an array of colors.
