I found your stylus on Amazon.
This is the Heiyo Amber stylus that is supposed to work for 40 hours on a single charge? Correct?
According to the info on Amazon, this company has a lifetime replacement warranty on their stylus product!
I would call their customer support and just tell them that their stylus isn't working any longer with any of your devices.
Ask them/demand that they send you another free stylus.
They warranty their stylus product!
Also, in the Amazon description this stylus does not mention ANY use or compatibilty with any other mobile devices OTHER than Apple iDevices.
So, there is a possibility you may have damaged the stylus using it with Android devices which may have slightly different touch screen technology or different capacitive current requirements.
Also, I am not even sure you really want another one of these. There are 25% 1 and 2 star reviews of this stylus on Amazon.
Out of nearly 320 user reviews, this equates to 80 users who found this active stylus below average or poor to use on Apple iDevices.
https://www.amazon.com/Heiyo-Stylus-Capacitive-Supporting-Replaceable-Touchscree n/dp/B0756CQPCW/ref=sr_1_1_sspa?ie=UTF8&qid=1523357021&sr=8-1-spons&keywords=hei yo+ipad+active+stylus-capacitive+digital+pen&psc=1&smid=A3J6JB769KBNLG
If you want a very good, reliable rechargeable, fine-point “active” stylus or ANY stylus for iPad, I would purchase one of these DIRECTLY here.
http://www.adonit.net/
Ones I recommend from Adonit.
Non-Active, but precise disc tip (no palm on screen. Need special, non-conductive drawing/writing glove to lay hand/palm on the screen).
Adonit Pro 3
http://www.adonit.net/jot/pro/
Rechargeable “Active” powered, fine tip stylus (no palm on screen. Need drawing/writing glove).
Adonit Dash 3
http://www.adonit.net/jot/dash/
If you want to place your palm on the screen while you write or draw ( without having to purchase a special writing/drawing glove ) I strongly recommend the Adonit Pixel stylus.
http://www.adonit.net/jot/pixel/
(option of a drawing/writing glove, but not needed. Has palm rejection per compatible apps).
It supoorts over two dozen apps. Most are of the more popular, well know ones.
There is some initial stylus setup in most of these two dozen apps.
The Adonit Pixel isn't just a simple turn on the stylus, turn on Bluetooth on the iPad and just start writing.
The Pixel needs to be paired with each compatible app and some settings like hand/palm position and stylus pressure settings will need to be initially setup to get this stylus to work, but once this is done, this stylus works wonderfully.
I love Adonit and own 4 or 5 of their stylus offerings.
All of their powered stylii have 10-15 minute auto shutoff.
Here are two other active stylii I highly recommend from The Joy Factory.
Both have 5 minute auto shutoff. No palm on screen. Need special, non-conductive drawing/writing glove to lay your hand on the screen.
Rechargeable “ Active” carbon fibre fine point tip
https://www.amazon.com/Joy-Factory-Precision-Rechargeable-BCU209/dp/B0721VZT74/r ef=sr_1_1_sspa?ie=UTF8&qid=1523359422&sr=8-1-spons&keywords=joy+factory+stylus&p sc=1
Standard replaceable battery “Active” carbon fibre fine point tip stylus
https://www.amazon.com/Joy-Factory-Pinpoint-Precision-BCU208/dp/B01AV6BGW8/ref=s r_1_4?ie=UTF8&qid=1523360910&sr=8-4&keywords=joy+factory+stylus
My Mom and I have this one as well.
If you use very high quality AAA batteries or AAA Lithium batteries, the performance of this stylus is very good!
The batteries should last anywhere from 3 to 6 months or so or, somewhat, longer depending on usage.
Good Luck to You!