Question - Can the charging management system contained inside AMPTRON batteries cope with pulse charging that is typically utilized in smart chargers and solar chargers?
Response - The answer to this interesting question is not a simple yes/no response. The simple response is yes, the batteries can "cope" with pulse charging in the short/medium term, however if a pulse charger is used constantly then there is a longer term impact. Let me elaborate a bit more.
One of the issues with a pulse charger as opposed to a constant voltage/constant current charger, is that the voltage peaks of the pulses are not that well controlled, and are often above the maximum allowed voltage. If a constant voltage charger exceeds the maximum voltage of the batteries, then the internal Battery Management System will simply disconnect and with virtually no longer term impact. However, if a pulse charger regularly exceeded the maximum voltage, then the internal BMS will be constantly disconnecting/reconnecting the cells, and besides that, the internal MOSFET switches can't always react that quickly so for small fractions of seconds, the cells will be exposed to over voltage situations.
As a result of the above, both the cells and the Battery Management System over time will start to suffer some damage/excessive wear that will affect the overall battery life. Now it is very difficult to estimate the magnitude of this impact in terms of a % of the total battery life, since there are many factors that will determine the overall impact.
Further, any lead acid charger (not just the pulse chargers), typically won't be able to charge the batteries to 100% State of Charger, because the constant current phase tends to end too soon. This usually only affects the top few % of the state of charge, so it is not a major impact to the battery.
Another potential issue, is when the charger, after reaching a full charge (or at least when the charger determines or thinks the battery is full) and having switched over into the float charge mode, sometimes this will return to the bulk/boost charge phase again. This switch over sequence is usually based on voltage, however some lead acid type chargers have this voltage threshold too low for Lithium batteries. For AMPTRON LiFePO4 batteries, the charger should return to bulk/boost charging around 13.2V, but we have seen lead acid chargers only kicking in around 12.8V which will mean the battery is already down below 30% before the charger properly starts charging again.
So the bottom line is a pulse charger can be used if intended for short/medium term usage, however it is not recommended for long terms usage due to the issues described above.