If the voltage guidelines are followed, most lead-acid battery chargers will work with LiFePo4 Batteries. The voltage requirements for LiFePO4 are typically met using either an AGM or a Gel method. The battery management system (BMS) commonly fails because the voltage used to charge flooded batteries is higher than the voltage required to charge LiFePO4 batteries. If this happens, you should use a charger that can use the LiFePO4 charge profile instead. Batteries can be charged using lead-acid devices without fear of damaging them because of the BMS.
Suppose the battery management system (BMS) disconnects due to inadequate voltage. In that case, even if the charger matches the permitted charging criteria for LiFePO4, the lead-acid battery charger may be unable to reconnect the BMS. The lithium battery has no voltage, and the voltmeter reports 0V when the BMS is turned off. On the other hand, lead-acid chargers need the battery to be plugged in before charging can begin. Unless the battery has a voltage of 1, the lead-acid battery charger will have no idea that a new battery has been installed or when to start charging it. Low-quality lithium chargers also cause this problem. LiFePO4 chargers of the highest quality will offer the best performance and most extended lifespan feasible.
Charging LIFEPO4 BATTERIES in parallel
To avoid overheating when utilizing multiple LiFePo4 Batteries in series, ensure their voltages are within 0.1V of one another. This will reduce the risk of the battery becoming imbalanced. When charging 24V batteries in parallel, the charging voltage should be between 28V and 28.4V. There must be between 42 and 42.6 Volts simultaneously charging 36 Volt lithium batteries. Finally, the battery manufacturer recommends a voltage range of 56V to 56.8V for charging 48V LiFePO4 batteries. The voltage requirements for each system voltage are summarized in the table below.
The voltage settings are utilized by both the CC and CC-CV charging profiles. Using a charger that does not meet the minimum voltage requirements will not damage your battery. Still, it will cause your battery to be undercharged, limiting its ability to deliver the maximum capacity for which it was designed. To reconnect the battery, you’ll need to unplug any currently connected loads and lower the charger voltage to the values listed in the tables above. We suggest changing the charger or purchasing a high-quality LiFePO4 battery charger to resolve this problem.
Charging LIFEPO4 BATTERIES in series
Please ensure the batteries’ voltages are within 50 millivolts of one another before putting them in series. Battery imbalances will be less likely to occur. There will be a voltage difference of more than 50 millivolts between any two batteries in the set if your batteries become imbalanced (0.05 volts). To rebalance, it is recommended that each battery be replenished in its slot. You should charge each battery in its separate compartment regularly to avoid imbalance. Use a multi-bank charger that can charge each battery individually while simultaneously charging LiFePo4 Batteries in succession to keep the cells in balance. You can use a 48V battery LiFePO4 charger or a 24V battery LiFePO4 charger to power your system. These chargers are available to you.
Conclusion
The voltage requirements forLiFePo4 Batteries are typically met using either an AGM or a Gel method. Batteries can be charged using lead-acid devices without fear of damaging them because of the BMS. Low-quality lithium chargers also cause this problem. Using a charger that does not meet the minimum voltage requirements will not damage your battery. Still, it will cause your battery to be undercharged, limiting its capacity. We suggest changing the charger or purchasing a high-quality LiFePO4 battery charger to resolve this problem.
