Hi!
I have an electric scooter that's a few years old, and I'm trying to find out if it's possible to use its charger for LiFePO4 batteries. The scooter's original batteries are two lead-acid units connected in series (24V total)
The charger has the reference LT01. I opened the charger and noticed that the charging control IC is from ST. I couldn’t clearly make out the part number, but I believe it reads "324 MZNQ910".
The charger specifies that it uses equal voltage charge and floating charge on its case. That is, the IC controls the charging up to a higher voltage level to desulfate the lead-acid batteries. After that, the charger maintains a less more stable floating voltage until it is disconnected from the scooter.
LiFePO4 batteries require CC/CV charging, constant current and then constant voltage once the current drops near the end of the cycle. I want to know whether your IC also performs this type of charging so I can determine if it's suitable to use with 2 12.8V LiFePO4 batteries as a replacement for the two 12V lead-acid ones.
Do you have the IC's datasheet? I can't find any information for the part number.
I'm attaching a photo of the charger’s PCB and your IC.
Best Regards!
Rafael G.
