At two minutes into the test at 21A the battery terminal voltage is at 13.1V.


MYTH BUSTING: Think about this snap shot if you use or are considering a battery combining relay for charge management and are concerned or have been scared off by one of the many myths surrounding the effective and highly reliable devices. The myth goes something like this: By using a battery combiner on AGM batteries and feeding the alternator or battery chargers charging current directly to the house battery bank first "will leave your start battery under charged". If you are practicing good battery management, and have the minimum suggested charge current for an AGM battery, this is a complete non-issue. In 2 minutes of charging, at 20% of Ah capacity from 50% SOC, the AGM battery voltage is already at the "combine level" for amazingly popular Blue Sea ACR. Battery voltage will rise pretty slowly from here but to get to an ACR's "combine level" is relatively quick and easy, especially if you have your system set up properly. The Echo Charger and Duo Chargers also turn on at similar voltages and those devices require all charge sources to be fed to the house bank.