Recharging a battery takes time but frugal power usage and 2-3 hours of recharge time per day will keep things running. I wasn’t able to find any manufacturer’s data on charge times for the WFCO converters but Progressive Dynamics has a couple of FAQs on this issue. According to PD:
11. How long will it take to re-charge my RV battery?
Battery recharge time is controlled by many factors, such as battery size, converter output rating the number of 12-volt lights and appliances that are “ON” during the re-charge cycle and how far the battery has been discharged. In our testing a 125-AH (Amp Hour) battery was fully discharged to 10.5-volts and then connected to a PD9160 (60-Amp) Converter/Charger set to our standard output voltage of 13.6-volts. The battery reached full charge in 70-hours.
12. I dry camp most of the time and want to recharge my RV batteries using my generator the next day. Is there any way I can get a faster recharge rate?
Yes, all 9100 Series Converter/Chargers are equipped with our TCMS (Total Charge Management System) Connector to allow you to easily install our Charge Wizard. All 9200 Series Converter/Chargers are equipped with the TCMS / Charge Wizard built in. The Charge Wizard senses that your batteries are low and that you want to charge them fast therefore, it automatically increases the output voltage of the Converter/Charger to 14.4-volts and will return a 125-AH battery to 90% of full charge in 2-3 hours. Full charge is achieved in approximately 15 hours.
A small generator powering your converter will overload if the batteries are too depleted. You could pair a small generator with an external battery charger that had a limited charging capacity. However, that will greatly extend your required charge time.
2015 Wildcat 282 RKX
2011 F350 Lariat, 6.7 L. Diesel, 8 ft., SRW, Reese R20