Battery use

How it works

Battery use notes the charge about once a minute while the device is awake, together with what it did: screen refreshes and pages turned. From that it works out how much an hour awake and 100 pages take, and how long the battery lasts at that pace.

Open Battery from the Tools menu. It shows the charge now, this time awake, the use on battery so far and your recent times awake. It pages with the page buttons, or by tapping the arrows at the top.

It needs a while of reading on battery before the figures mean anything. Recording is on by default and can be switched off in Settings, under System, as Record battery use.

A plugin with code runs with full access to the reader. It can read everything on it, your passwords and other secrets included, and use the network. A faulty one can crash the reader; a hostile one can damage it for good. Install it only if you trust who made it, as you would a program on a computer.

Builds

It is built for the Xteink X4, Xteink X4 Pro and Xteink X4 Classic, made for PaperPaw 0.5. A build runs on every PaperPaw of the same plugin interface. When a release raises the interface, a reader on that release waits until the author makes a new build.

Its code, open to read

The store shows the source of every plugin with code and keeps a copy, and rebuilds each build from that source with the compiler its fingerprint names, to compare. The file served is always the one its author signed.

• Xteink X4: Not rebuilt
• Xteink X4 Pro: Not rebuilt
• Xteink X4 Classic: Not rebuilt