MobileRead Forums - View Single Post - K3 Is there anyway to boot kindle without battery or get a cheap battery

superpomme · 06-01-2023, 07:06 PM

Heya, sorry, I didn't see your response.

I can't promise that these are the best things, but this is what I would try:

1. if it can change the image on the screen, and it can go into recovery then it would be worth giving Kubrick a try. I had one that crashed on boot each time which kubrick was able to recover. It runs as a boot cd/usb and has a walkthrough to downgrade it. One thing to note, I run it on a usb and it says that it failed to boot. If i type "exit" into the prompt then it runs. I have no idea why, but I found a post buried somewhere where they had found the same.

2. if you have one of these https://www.ebay.co.uk/itm/154990999480 , have a use for one, or you're not already sick of buying parts to try and resurrect the kindle then you can directly connect to the serial on the back of the kindle to read what it is doing There is a detachable little doodad that I soldered to and can connect to whichever kindle I am working on. You can then use putty to connect to it. Watch the voltage tho, it needs to be at 1.8V (this one has a toggle for it - you may be able to find better/ cheaper ones, that's just the one I used).

The battery thing sounds to me like the thing the kindle does when it doesn't have that flag to ignore the battery. If that's the case then it will show that it is shutting down when you're on serial.

The other thing to consider is how long you want to spend trying to fix it. If you don't have the TTL thing and wouldn't have a use for it outside of this then it's an added expense when it still might not work. All my tests with the battery stuff took so much of my time, but I had a bunch of them that I wanted to get working so It didn't matter as much. The ones on ebay are almost always broken in one of two ways - the screen is broken or the battery it broken. If you already have the replacement battery then you could potentially just buy one that has a dead battery (tho you run the risk it has another issue.). Or, as you say, go with the amazon version.

edit: sorry, I re-read that and it comes across overly negative. Personally I would keep trying with it. If it is that flag then hopefully via serial you can get that changed. If it stays on while in the recovery mode then it does sound like battery itself is supplying power. In my attempts when the power was too low it would trip each time it went to change the screen, but yours seems to be able to get further than that.

Hope that can be of help

06-01-2023, 07:06 PM	#7
superpomme Enthusiast Posts: 42 Karma: 100218 Join Date: May 2021 Device: kobo touch, k3, k4, Nook Simple touch	Heya, sorry, I didn't see your response. I can't promise that these are the best things, but this is what I would try: 1. if it can change the image on the screen, and it can go into recovery then it would be worth giving Kubrick a try. I had one that crashed on boot each time which kubrick was able to recover. It runs as a boot cd/usb and has a walkthrough to downgrade it. One thing to note, I run it on a usb and it says that it failed to boot. If i type "exit" into the prompt then it runs. I have no idea why, but I found a post buried somewhere where they had found the same. 2. if you have one of these https://www.ebay.co.uk/itm/154990999480 , have a use for one, or you're not already sick of buying parts to try and resurrect the kindle then you can directly connect to the serial on the back of the kindle to read what it is doing There is a detachable little doodad that I soldered to and can connect to whichever kindle I am working on. You can then use putty to connect to it. Watch the voltage tho, it needs to be at 1.8V (this one has a toggle for it - you may be able to find better/ cheaper ones, that's just the one I used). The battery thing sounds to me like the thing the kindle does when it doesn't have that flag to ignore the battery. If that's the case then it will show that it is shutting down when you're on serial. The other thing to consider is how long you want to spend trying to fix it. If you don't have the TTL thing and wouldn't have a use for it outside of this then it's an added expense when it still might not work. All my tests with the battery stuff took so much of my time, but I had a bunch of them that I wanted to get working so It didn't matter as much. The ones on ebay are almost always broken in one of two ways - the screen is broken or the battery it broken. If you already have the replacement battery then you could potentially just buy one that has a dead battery (tho you run the risk it has another issue.). Or, as you say, go with the amazon version. edit: sorry, I re-read that and it comes across overly negative. Personally I would keep trying with it. If it is that flag then hopefully via serial you can get that changed. If it stays on while in the recovery mode then it does sound like battery itself is supplying power. In my attempts when the power was too low it would trip each time it went to change the screen, but yours seems to be able to get further than that. Hope that can be of help Last edited by superpomme; 06-01-2023 at 07:25 PM.