{"product_id":"hitachi-bcl1815-18v-battery-case-pcb-protection-board","title":"Hitachi BCL1815 18V Battery Rebuild Case \u0026 PCB Protection Board","description":"\n\u003ch2\u003eBCL1815 18V Li-Ion Battery Rebuild Kit — 5-Cell Plastic Case + PCB Charging Protection Board\u003c\/h2\u003e\n\n\u003cp\u003eBring your Hitachi 18V power tool batteries back to life with this \u003cstrong\u003eBCL1815 5-cell lithium-ion battery plastic housing and PCB charging protection circuit board\u003c\/strong\u003e. Designed as a DIY repair and rebuild component, this kit includes the durable plastic enclosure and the integrated protection circuit board — \u003cstrong\u003eno battery cells are included\u003c\/strong\u003e. It is compatible with Hitachi 18V models including the \u003cstrong\u003eBCL1830\u003c\/strong\u003e and \u003cstrong\u003eEMB1830\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Important Notice:\u003c\/strong\u003e This is a \u003cstrong\u003ecomponent kit only\u003c\/strong\u003e — no battery cells are supplied. It is intended exclusively for experienced users who are knowledgeable in battery performance and have hands-on experience with battery pack assembly and spot welding.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompatible Housing:\u003c\/strong\u003e Fits exactly 5 × 18650 power lithium-ion cells (cells not included)\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePCB Charging Protection:\u003c\/strong\u003e Integrated circuit board provides overcharge, over-discharge, and short-circuit protection\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e Designed for Hitachi BCL1815 \/ BCL1830 \/ EMB1830 18V battery packs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e100% Brand New:\u003c\/strong\u003e Not an original Hitachi part — aftermarket rebuild component\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDIY Repair Ready:\u003c\/strong\u003e Ideal for rebuilding or repairing worn-out 18V Hitachi tool battery packs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDurable Plastic Shell:\u003c\/strong\u003e Sturdy enclosure engineered to house 18650 cells in a 5-cell configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's Included (PCB-BOX Package)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × BCL1815 5-Cell Plastic Battery Case\u003c\/li\u003e\n  \u003cli\u003e1 × PCB Charging Protection Circuit Board\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNo battery cells are included.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eAssembly Guidelines — Please Read Before Use\u003c\/h3\u003e\n\n\u003ch4\u003eIf Using New 18650 Cells:\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003eUse \u003cstrong\u003e18650 power-type lithium-ion cells\u003c\/strong\u003e with low internal resistance. All 5 cells must be the same brand, model, and specifications.\u003c\/li\u003e\n  \u003cli\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e substitute standard energy-storage lithium cells — use only high-drain 18650 power cells.\u003c\/li\u003e\n  \u003cli\u003eBefore assembly, test and balance each individual cell. \u003cstrong\u003eAll 5 cells must be charged to the same voltage level\u003c\/strong\u003e before welding the PCB.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch4\u003eIf Repairing an Existing Battery Pack:\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003eTest the voltage at both terminals of each existing cell.\u003c\/li\u003e\n  \u003cli\u003eIf voltages differ, individually charge each cell until all are at the same voltage level before proceeding with assembly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong style=\"color:darkred;\"\u003e⚠️ Critical Safety Reminder:\u003c\/strong\u003e Ensure every 18650 cell is at the same voltage before soldering or spot-welding the PCB board. Mismatched voltages can cause damage to the PCB or create a safety hazard.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eSafety \u0026amp; Electrical Standards\u003c\/h3\u003e\n\u003cp\u003eFor guidance on the safe use of lithium-ion batteries and electrical components in DIY and consumer applications, refer to the U.S. Consumer Product Safety Commission (CPSC) — Lithium-Ion Battery Safety.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Does this BCL1815 battery case kit include 18650 lithium-ion cells?\u003c\/h4\u003e\n\u003cp\u003eA: No. This kit includes only the \u003cstrong\u003e5-cell plastic enclosure\u003c\/strong\u003e and the \u003cstrong\u003ePCB charging protection circuit board\u003c\/strong\u003e. You must source and supply your own 18650 power-type lithium-ion cells separately. All 5 cells must be matched in brand, model, capacity, and voltage before assembly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which Hitachi battery models is this PCB case compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This plastic case and PCB board is designed to be compatible with \u003cstrong\u003eHitachi BCL1815, BCL1830, and EMB1830\u003c\/strong\u003e 18V lithium-ion battery packs. It is an aftermarket rebuild component and not an original Hitachi OEM part.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this kit suitable for a beginner to assemble?\u003c\/h4\u003e\n\u003cp\u003eA: This product is intended \u003cstrong\u003eonly for users with practical experience in battery pack assembly\u003c\/strong\u003e and a solid understanding of lithium-ion battery performance. It requires spot welding or soldering skills and the use of proper voltage-testing equipment. Beginners should seek guidance from an experienced technician before attempting assembly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What type of 18650 cells should I use with this case?\u003c\/h4\u003e\n\u003cp\u003eA: Always use \u003cstrong\u003e18650 high-drain power-type lithium-ion cells\u003c\/strong\u003e (not standard energy-storage cells). All 5 cells must share the same brand, model, capacity (mAh), and internal resistance rating. Pre-balance each cell to the same voltage before welding to ensure safe and optimal performance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does this BCL1815 battery case kit include 18650 lithium-ion cells?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This kit includes only the 5-cell plastic enclosure and the PCB charging protection circuit board. 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