Makita BL4040 pinout – Power Tools Battery Pinouts – Laptop Battery Analyzer and Repair Forum
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
18v Battery Chip Pcb Board Replacement For Makita Bl1830 Bl1840 Bl1850 Bl1860 - Power Tool Accessories - AliExpress
Bms Pcb Board For Makita 18v Power Tool Bl1815 Bl1830 Bl1835 Lxt400 Bl1840 Bl1850 Led Type - Battery Accessories & Charger Accessories - AliExpress