如何检测？
在搜索栏输入 ;dm，回车，之后会生成4个txt日志文件，打开all_system_logs_xxx，搜索 battinfo:batt_type就可以看到了：
210613:231626 powerd[2694]: I def:battinfo:batt_type = PRIMARY, capav=92%, mAh=25mAh, volt=3988mV, current=-8mA, temp=102F, lmd=247mAh, cycl=451, reason_for_log=Battery log due to high delta voltage:
210613:231626 powerd[2694]: I def:battinfo-misc:batt_type = PRIMARY caprep=14%, capmix=64%, mAhav=74mAh, mAhmix=162mAh, reason_for_log=Battery log due to high delta voltage:
210613:231627 powerd[2694]: I def:battinfo:batt_type = SECONDARY, capav=09%, mAh=130mAh, volt=3531mV, current=-238mA, temp=93F, lmd=1261mAh, cycl=42, reason_for_log=Battery log due to high delta voltage:
此外，;411命令可以查看 Kindle 服务器信息，;611 可以查看本地 WAN 口信息，;711则可以查看 WiFi 相关信息。
KO1的可充电皮套的电池型号是1762a5，搜索淘宝可以找到。
主机的电池型号是23337或者58-000117。
禁用默认的10分钟屏保，在任意位置召唤出搜索框，输入 ~ds（即 Disable Screensaver 的缩写）代码并回车。
补充：在Hi-PDA论坛找到了一个淘宝商家，能把KO1的内置247电池换成450电池，充放电一次后日志如下，看起来能检测到电池实际容量是450了，但是循环次数和书面电池容量还是旧电池的：
210707:164143 powerd[2120]: I def:battinfo:batt_type = PRIMARY, capav=100%, mAh=172mAh, volt=4183mV, current=0mA, temp=91F, lmd=247mAh, cycl=527, reason_for_log=Battery log due to regular timer:
210707:164143 powerd[2120]: I def:battinfo-misc:batt_type = PRIMARY caprep=100%, capmix=182%, mAhav=170mAh, mAhmix=454mAh, reason_for_log=Battery log due to regular timer:
电池皮套也换过了：
210707:164313 powerd[2120]: I def:battinfo:batt_type = SECONDARY, capav=89%, mAh=1178mAh, volt=4292mV, current=394mA, temp=86F, lmd=1322mAh, cycl=9, reason_for_log=Battery log due to high delta voltage:
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