Amazon.com: Upgraded to 9.0Ah 1 Pack Lithium Ion Battery Replacement for Makita 18V Battery BL1860 BL1830 BL1840 BL1850 BL1850B LXT-400 with LED Indicator Compatible with All Makita 18V Cordless Power Tools :
SOLVED: How do I open them and cell replacement - Power Drill - iFixit
BL1815 battery rebuild (Date code from July 2011) (No Star symbol) (kept the original BMS). : r/Makita
18v LXT Battery Repair – Chip Reset By Ryan Flint – April 2013 Introduction The Makita range of battery power too… | Battery repair, Repair, Battery hacks
How to repair makita battery for $12 [easy fix with using repair kit -new pcb and housing] - YouTube
Repair Makita BL1830 Battery By Making One Good From Two Bad - YouTube