Over the years, we have seen lots of misinformation and poor advice communicated through various media, blogs, forums and even from converter manufacturers when it comes to the best way to charge and manage RV batteries. We have invested considerable time and effort over the years, to analyze the best possible regimen for battery charging and “good battery health.” In the end, the best process is simple and does not need to be complicated by unneeded charging stages. Following is an overview of the three-stage charging developed by the WFCO Power Pros™ team.
WFCO’s Battery Guardian™ automatic three-stage converter, which is standard for all WFCO products, handles every charging need for the RV while serving to extend the battery’s life. In fact, well-maintained batteries should normally never need more than WFCO’s two-stage (Normal and Trickle) charging modes. Our third stage (Bulk) is for the rare times a battery needs extra power charging.
The WFCO Normal (Absorption) Mode alone is a powerhouse, capable of charging a fully discharged battery in under three hours at 13.6 Volts. When the RV is being used, the battery is kept readily charged in Normal Mode.
However, if the converter detects no significant variation in current draw for approximately 44 continuous hours, our Trickle (Float) Mode automatically kicks in and brings the battery back to full charge. Maintaining full charging in this manner helps prevent stratification of the battery’s fluids.
For those cases when the battery charge drops significantly due to prolonged disuse, poor maintenance, or significantly heavy system overloads, our 14.4 Volt Charge (Bulk) Mode kicks in. This charging mode delivers a maximum four-hour charge in order to prevent battery damage and extend the life of the battery.
So be assured, when installing any WFCO converter or featuring RVs on your lot equipped with a WFCO converter or power center, your customers are getting the best battery charging care available.