Help Pulse with a new icon or button design

Pulse

We are making a remote monitoring system for seniors that consists of 2 parts - the Pulse Pendant & the Pulse Portal. The senior wears the Pulse Pendant which has a help button and automatic fall detection. The caregiver has access to the Pulse Portal which displays information from the Pendant in real time.

http://www.yourpulse.ca is the current website

I am looking to get 3 sets of icons designed (a total of 7 icons) for the Pulse Portal (all should be PNG format). These icons will be used to represent 3 key pieces of information that are collected by the Pulse Pendant and displayed in the Pulse Portal:

1. Location: where is the senior right now (home, grocery store, neighbours, etc)
-this only requires one icon

2. Activity Level: How long have they walked that day? how long have they been sitting still? etc.
-this requires 3 icons: one for high activity, one for medium activity, and one for low activity

3. Battery Life: What is the battery life left of the device - does it need to be charged?
-this requires 3 icons: one for "fully charged", one for "partially charge", and one for "needs charging"

Target User of the Pulse Portal:
35-60 year old female
daughter/daughter-in-law of the senior being monitored

Design:
The icons should be easy to understand, and clearly represent the piece of information they represent.

Ideas/feelings that *could* be drawn upon for inspiration:
-peace of mind
-calming
-sense of security
-trusted information

See the attached image for a mock-up of what the Pulse Portal will look like. The icons would go in the center.

The Pulse Portal is being rebranded and we will be drawing upon earthy tones and playing around with a "watercolor" look/brushstroke for the Pulse Logo. Icon designs should fit with this theme.