I just installed a BMV-712 Smart battery monitor. When the batteries discharge the amp/hr consumed doesn't match the charge percent. Eg., if amp/hrs consumed is -100 (out of total 400) the charge percent is too high, like 82% when it should be 75%? According to another thread, this is normal if the amp draw is light over a longer time, which is the case here. So, when do I reach 50%, when the percentage is 50% or the consumed amp/hrs is -200? In other words, which value is correct? The other thread was very helpful but not clear enough to me. Thanks!