Index: uspace/lib/c/generic/device/battery_dev.c
===================================================================
--- uspace/lib/c/generic/device/battery_dev.c	(revision 917797f1cec4a09619bf92bcb7aaec9ac4de9839)
+++ uspace/lib/c/generic/device/battery_dev.c	(revision 917797f1cec4a09619bf92bcb7aaec9ac4de9839)
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2012 Maurizio Lombardi
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+ /** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#include <ipc/dev_iface.h>
+#include <device/battery_dev.h>
+#include <errno.h>
+#include <async.h>
+#include <time.h>
+
+/** Read the current battery status from the device
+ *
+ * @param sess     Session of the device
+ * @param status   Current status of the battery
+ *
+ * @return         EOK on success or a negative error code
+ */
+int
+battery_status_get(async_sess_t *sess, battery_status_t *batt_status)
+{
+	sysarg_t status;
+
+	async_exch_t *exch = async_exchange_begin(sess);
+
+	int const rc = async_req_1_1(exch, DEV_IFACE_ID(BATTERY_DEV_IFACE),
+	    BATTERY_STATUS_GET, &status);
+
+	async_exchange_end(exch);
+
+	if (rc == EOK)
+		*batt_status = (battery_status_t) status;
+
+	return rc;
+}
+
+/** Read the current battery charge level from the device
+ *
+ * @param sess     Session of the device
+ * @param level    Battery charge level (0 - 100)
+ *
+ * @return         EOK on success or a negative error code
+ */
+int
+battery_charge_level_get(async_sess_t *sess, int *level)
+{
+	sysarg_t charge_level;
+
+	async_exch_t *exch = async_exchange_begin(sess);
+
+	int const rc = async_req_1_1(exch, DEV_IFACE_ID(BATTERY_DEV_IFACE),
+	    BATTERY_CHARGE_LEVEL_GET, &charge_level);
+
+	async_exchange_end(exch);
+
+	if (rc == EOK)
+		*level = (int) charge_level;
+
+	return rc;
+}
+
+/** @}
+ */
+