# Estimating batery life

I'm having some troubles trying to estimate battery life, I have a device that consumes 50mA under IDLE time, 650mA under transmission, and 100uA in Sleep mode, I have a battery with 1.7Ah of capacity, the times are:

1. IDLE = 5s
2. Transmission = 10s
3. Sleep = 86,385s

I don't know how to calculate the average of the currents with the times of the various states, I need some help with this :) I'd really appreciate that.

• During idle, the current consumption is 50mA x 5s. Similar formulas can be applied to the other two states... Think about your question a little more, alone. – Claudio Avi Chami Sep 2 '16 at 17:03