To Remember

07/17/10

Langley, BC

091020 - Need a spot for some of the other tidbits I'm picking up - a place to park them so I don't lose them

How do I interpret all these voltage readings?

So, you can measure your battery Voltage to determine how charged they are. And you can measure the Current the see the rate of charge or discharge (how fast the batteries are gaining or losing power). Use the chart below to interpret your battery voltage readings.

This chart will allow you to get a pretty good idea of how charged the batteries are. They must not be charging or discharging for these voltages to be correct. Also, it should be at least 1 or 2 hours since they were. A good time to check is early in the morning before charging starts or any appliances are turned on. This will tell you the SOC (state of charge) or simply put, how full they are.

Battery Voltage Chart

% of Full Charge	Voltage
100 % charged	12.7 volts
90 % charged	12.6 volts
80 % charged	12.5 volts
70 % charged	12.3 volts
60 % charged	12.2 volts
50 % charged	12.1 volts
40 % charged	12.0 volts
30 % charged	11.9 volts
20 % charged	11.8 volts
10 % charged	11.7 volts
completely discharged	11.6 volts or less

Remember, this measurement is most accurate after the batteries have been at rest at least 1 hour, and neither charging nor discharging.

Hatches - http://www.maxammetal.com/maxamshop/index.php?cPath=19

Beverage Antennas - http://www.w8ji.com/beverages.htm