The "Mouse battery low" message is too specific
File plugins/power/gsd-power-manager.c
:
{
.kind = UP_DEVICE_KIND_MOUSE,
/* TRANSLATORS: notification title, a wireless mouse is low or very low on power */
.title = N_("Mouse battery low"),
/* TRANSLATORS: notification body, a wireless mouse is low on power */
.low_body = N_("Wireless mouse is low on power (%.0f%%)"),
.low_body_unk = N_("Wireless mouse is low on power"),
/* TRANSLATORS: notification body, a wireless mouse is very low on power */
.crit_body = N_("Wireless mouse is very low on power (%.0f%%). "
"This device will soon stop functioning if not charged."),
.crit_body_unk = N_("Wireless mouse is very low on power. "
"This device will soon stop functioning if not charged."),
}, {
.kind = UP_DEVICE_KIND_KEYBOARD,
/* TRANSLATORS: notification title, a wireless keyboard is low or very low on power */
.title = N_("Keyboard battery low"),
/* TRANSLATORS: notification body, a wireless keyboard is low on power */
.low_body = N_("Wireless keyboard is low on power (%.0f%%)"),
.low_body_unk = N_("Wireless keyboard is low on power"),
/* TRANSLATORS: notification body, a wireless keyboard is very low on power */
.crit_body = N_("Wireless keyboard is very low on power (%.0f%%). "
"This device will soon stop functioning if not charged."),
.crit_body_unk = N_("Wireless keyboard is very low on power. "
"This device will soon stop functioning if not charged."),
}, {
Does it really make sense to say "wireless mouse" or "wireless keyboard"? It is clear that it is wireless, so you can just say it is a mouse or keyboard. The phrase “wireless mouse” sounds quite old-fashioned.