MobileRead Forums - View Single Post - Clara HD battery unreliable when below 30%

davidfor · 06-16-2022, 02:01 AM

I can think of two things.

One is that the battery is starting to fail. The behaviour is what I have seen with older Li-Ion batteries in other devices. They seem to have a charge but it runs out a lot quicker than expected. Whether this is likely depends on how old the battery is and how it has been used or abused. In these devices, you would need to read constantly to shorten the life by a lot. But, if you are reading or storing the device in hot conditions, it will shorten the battery life. But, the longer you have had the device, the more likely this is the case.

The other possibility is a hung or runaway process. That can be triggered by particular books. If this has only started since you started a new book, then that is likely to be the case. A test for this is to restart the device after finishing reading. That will stop everything and you can see what happens with the battery usage.

Also, I doubt it is the case. There have been some issues in the past, but, I haven't heard of anything recently. It could be because of the case if there is something that might be affecting the magnet and sensor nearby. I've been caught like this when I put one of the devices to near another device with a magnetic cover.

06-16-2022, 02:01 AM	#2
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	I can think of two things. One is that the battery is starting to fail. The behaviour is what I have seen with older Li-Ion batteries in other devices. They seem to have a charge but it runs out a lot quicker than expected. Whether this is likely depends on how old the battery is and how it has been used or abused. In these devices, you would need to read constantly to shorten the life by a lot. But, if you are reading or storing the device in hot conditions, it will shorten the battery life. But, the longer you have had the device, the more likely this is the case. The other possibility is a hung or runaway process. That can be triggered by particular books. If this has only started since you started a new book, then that is likely to be the case. A test for this is to restart the device after finishing reading. That will stop everything and you can see what happens with the battery usage. Also, I doubt it is the case. There have been some issues in the past, but, I haven't heard of anything recently. It could be because of the case if there is something that might be affecting the magnet and sensor nearby. I've been caught like this when I put one of the devices to near another device with a magnetic cover.