DC to DC charger
Thinking of installing a Victron charger for those days on the road when solar is not available. Can the charger be used in conjunction with an inverter (2000 watts) to run the refrigerator on electri...
Forum Discussion
StirCrazy wrote:Camper_Jeff_&_Kelli wrote:
The best thing about Lithium is they always put out 13.2 volts thanks to the BMS. Lead batteries, all types, slowly drop voltage as they discharge causing brown out conditions like dim lights, slow pump motors, and weak other loads. Not so with Lithium. 13.2 volts stable all the way down to 80 or 90% discharge and then the BMS protection shuts it off till recharged. Lithium is like having your cake and eating it too.
now thats not true, at 90% discharged the voltage of a LiFePO4 battery is only 12.0V if you would have said they put out over 12V untill 90% discharged then yes that is true and still a huge advantage over a wet battery which hits 12V at about 50% discharged. an even better advantage of the LiFePO4 is the voltage level under load, you can discharge much deeper befor you get alarms from your inverter from low voltage. a flooded battery can drop to 11.5V at 100% charged if it has a C/3 load on it, so basicly a 100 amp battery with a 33amp load will dip pretty fast, which is why for big rigs people run 4 6V batteries or more. Lifepo4 doesnt have this issue to that degree as you can do a C1 discharge and stay above 12V to 90% discharge which would be a 100 amp draw on a 100amp battery. so in a way your right just your numbers are off a little.
I will agree that you have a more precise answer. The bigger the load, the more likely the voltage will drop and that effect will increase the more it is discharged. Nonetheless, the voltage is more stable than lead.
