Update README.md

README.md

@@ -25,9 +25,13 @@ The Hall Effect Sensor draws xmA @ 3.3V
 Assume whole device runs at peak load for 5% of the time
 
 P = IV = 5e-3 * 3.3 * 0.05 = 0.825 mW 
+
 1 Wh = 1 watt for 1 hour
+
 0.825 mW for 365 days = 7.2 Wh
+
 E [wh] = (Q [mAh] * V [V])/1000
+
 Q = (1000 * 7.2)/3.3 = 2181 mAh
 
 The CR2477 is one of the largest coin cell batterys (20mm diameter and 4.7mm thickness) and has a capacity of ~1000 mAh.