diff --git a/go.mod b/go.mod
index f588ded..cf28804 100644
--- a/go.mod
+++ b/go.mod
@@ -19,4 +19,4 @@ require (
 	maunium.net/go/mautrix v0.5.5
 )
 
-replace github.com/Rhymen/go-whatsapp => github.com/tulir/go-whatsapp v0.3.2
+replace github.com/Rhymen/go-whatsapp => github.com/tulir/go-whatsapp v0.3.3
diff --git a/go.sum b/go.sum
index 96d3929..e9be739 100644
--- a/go.sum
+++ b/go.sum
@@ -113,6 +113,8 @@ github.com/tidwall/sjson v1.1.1 h1:7h1vk049Jnd5EH9NyzNiEuwYW4b5qgreBbqRC19AS3U=
 github.com/tidwall/sjson v1.1.1/go.mod h1:yvVuSnpEQv5cYIrO+AT6kw4QVfd5SDZoGIS7/5+fZFs=
 github.com/tulir/go-whatsapp v0.3.2 h1:SPNyB/yxaYY1Sca75OttsrsPNMPZzpjhwTzJy6Dx9ig=
 github.com/tulir/go-whatsapp v0.3.2/go.mod h1:7yGOBdWidM6gsmbAFwgkwHEIhzVrm01+6UbImpMWfTM=
+github.com/tulir/go-whatsapp v0.3.3 h1:R/SRdgjG1rdmegxx1CE2KmVBKzI8xvC9EE+NNApb4rA=
+github.com/tulir/go-whatsapp v0.3.3/go.mod h1:7yGOBdWidM6gsmbAFwgkwHEIhzVrm01+6UbImpMWfTM=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9 h1:vEg9joUBmeBcK9iSJftGNf3coIG4HqZElCPehJsfAYM=
diff --git a/user.go b/user.go
index 14eda22..969cc55 100644
--- a/user.go
+++ b/user.go
@@ -58,7 +58,8 @@ type User struct {
 	ConnectionErrors int
 	CommunityID      string
 
-	cleanDisconnection bool
+	cleanDisconnection  bool
+	batteryWarningsSent int
 
 	chatListReceived chan struct{}
 	syncPortalsDone  chan struct{}
@@ -672,6 +673,33 @@ func (user *User) putMessage(message PortalMessage) {
 	}
 }
 
+func (user *User) HandleNewContact(contact whatsapp.Contact) {
+	user.log.Debugfln("Contact message: %+v", contact)
+	go func() {
+		puppet := user.bridge.GetPuppetByJID(contact.Jid)
+		puppet.UpdateName(user, contact)
+	}()
+}
+
+func (user *User) HandleBatteryMessage(battery whatsapp.BatteryMessage) {
+	user.log.Debugfln("Battery message: %+v", battery)
+	var notice string
+	if !battery.Plugged && battery.Percentage < 15 && user.batteryWarningsSent < 1 {
+		notice = fmt.Sprintf("Phone battery low (%d remaining)", battery.Percentage)
+		user.batteryWarningsSent = 1
+	} else if !battery.Plugged && battery.Percentage < 5 && user.batteryWarningsSent < 1 {
+		notice = fmt.Sprintf("Phone battery very low (%d remaining)", battery.Percentage)
+		user.batteryWarningsSent = 2
+	} else {
+		user.batteryWarningsSent = 0
+	}
+	if notice != "" {
+		go func() {
+			_, _ = user.bridge.Bot.SendNotice(user.GetManagementRoom(), notice)
+		}()
+	}
+}
+
 func (user *User) HandleTextMessage(message whatsapp.TextMessage) {
 	user.putMessage(PortalMessage{message.Info.RemoteJid, user, message, message.Info.Timestamp})
 }