Originally Posted by JacobMerridy
Progressive Dynamics' PD9260C recharges your RV’s battery to 90% in 2-3 hours and extends your battery’s life! Most converters with a built-in battery charger only have one charging mode, 13.6 volts. Includes a BUILT-IN Charge Wizard. The 9200 has four charging modes and will maintain your battery for longer life and features reverse battery protection, filtered DC power, electronic current limiting, low line voltage protection, intelligent cooling fan, high voltage protection, automatic thermal shutdown, and variable speed fans. Replaces any floor/bunk mounted converter. 1/box.
PD builds a quality unit, but they are missing a few VERY IMPORTANT features:
• temperature compensation
. This is the ability of the charging section to change the voltage profile to fit the temperature of the batteries (using a temperature sensor connected to a negative terminal of a battery). For example, Lifeline AGM batteries require a 14.3VDC absorption charger at 77ºF (25ºC) and a float charge of 13.3 VDC. At 100ºF, these numbers change to 14.04/13.02 while at 50ºF, they are 14.72/13.7. It is easy to see that a charger without temperature compensation can either under/over charge your batteries on a regular basis.
• adjustable charging time
. Depending on the size of your battery bank and the type of batteries, they will need more/less time in absorption phase. Standard converter/chargers do not offer this feature.
. Again, different types of batteries need different charge profiles and there is no adjustment for this on a converter/charger. AGM batteries (at 77ºF) need 14.3/13.3 VDC for absorption and float. Some liquid lead acid batteries need up to 14.8/13.6 VDC. It all depends on the battery construction and the manufacturer's specifications.
The only units that DO offer all of this is a quality inverter/charger