BL1815 battery rebuild (Date code from July 2011) (No Star symbol) (kept the original BMS). : r/Makita
Makita BL4040 pinout – Power Tools Battery Pinouts – Laptop Battery Analyzer and Repair Forum
Amazon.com: Li-ion Battery BMS PCB Charging Protection Board For Makitas 18V Power Tool BL1815 BL1830 BL1860 LXT400 bl1850 Battery Status LED : Electronics
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Baby Products Online - 5pcs Li-Ion Battery Bms Charging Protection Board Pcb for Makita Power Tools - Kideno
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Suitable for Makita 18V BL1830 3.0Ah 5.0Ah Li-Ion battery parts replacement Charging protection circuit board Label paper and LED battery indicator (PCB) - Amazon.com