Core battery replacement common questions answered. Is the tag on flex needed permanently?

Is the tag on flex needed permanently? No
Is the battery health going to degrade rapidly? No
Is this a good solution to replace batteries and avoid the non genuine message? Yes
What are the most important things when doing a bcm swap?
1. Ensuring you don’t bend the bcm too much, In fact I try my best to not bend it at all.
2. Ensuring you have a very solid weld from the new cell to the bcm. A weak weld can disconnect and a small connection won’t work properly either.

[@lallyji8051]

love the detailed vids. Thanks. keep going!

[@DSanchez49r]

Thank you for the info! Great vid !

[@TheIsasin]

Hello, after instalation the tag-on flex it shows 1%, and wont charge. I restarted multiple times, and I took it off and put it on for two hours and still the same. Now even without the tag-on flex battery shows 1%. Is the Tag-on Flex broken? Before it showed normal battery percentage and battery health 81% What do i do now? . Thank you

[@gabrielfaucher8260]

I corrected battery health and cycle with the tag on flez, when i remove it it keep saying the old battery percentage (74%) when the flez is on, its saying its not charging. what could be the issue?

[@midwolf93]

hi did you find the answer and , do you know if the analytics log still delivers battery cycle count and Current/Max capacity after a third party battery replacement. So that I can manage to know where my battery at myself ? thanks

[@Ramiro25RB]

@@midwolf93 amigo solo lo reiniciamos varias veces y funciona todo bien !!

[@daviddenson3324]

I don't understand. If the tag on flex is not needed then what was its use in the first place??

[@GamerBit]

to read encrypted data when changing battery data, after that its not needed.

[@Dan_711]

@@GamerBit so it would not bring the battery notification after a while without it?