{"product_id":"bat420-li-ion-battery-case-pcb-protection-board-10-8v-12v-bat412a-bat413a","title":"BAT420 Li-ion Battery Shell \u0026 PCB Protection Board 10.8V 12V","description":"\u003ch2\u003eBAT420 Li-Ion Battery Shell \u0026amp; PCB Charging Protection Board – 10.8V \/ 12V\u003c\/h2\u003e\n\u003cp\u003eRebuild or repair your 10.8V\/12V Li-ion battery pack with this precision-engineered plastic housing shell and PCB charging protection board, compatible with BAT412A, BAT413A, and BAT411 battery models. Designed for experienced DIY technicians and electronics hobbyists, this component set gives you everything you need — except the cells — to assemble a fully functional battery pack.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Important Notice – Please Read Before Ordering:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is a \u003cstrong\u003eDIY semi-manufactured component\u003c\/strong\u003e. \u003cstrong\u003eNo battery cells are included.\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eAssembly requires \u003cstrong\u003eprofessional knowledge, hands-on experience, and specialized tools\u003c\/strong\u003e. If you are not familiar with battery assembly, this product is not suitable for you.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThis item is sold as-is with no after-sales service, returns, or refunds.\u003c\/strong\u003e Please purchase with caution.\u003c\/li\u003e\n  \u003cli\u003eMinor variations in color, label design, and PCB layout may occur between production batches. Functionality remains consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e BAT420, BAT412A, BAT413A, BAT411\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 10.8V \/ 12V Li-ion battery configuration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Plastic housing shell + PCB charging protection board (no cells)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable plastic construction with metal contact components\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Function:\u003c\/strong\u003e Built-in charging protection circuitry for safe battery management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Battery pack repair, rebuild, and custom assembly projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% brand new components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic + Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.8V \/ 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Part Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBAT420, BAT412A, BAT413A, BAT411\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Set (Shell + PCB Board)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis product is intended strictly for individuals with \u003cstrong\u003epractical experience in battery pack assembly and electronics repair\u003c\/strong\u003e. If you are comfortable working with Li-ion cells, spot welders, and PCB wiring, this kit provides an affordable path to restoring or custom-building a 10.8V\/12V battery pack without sourcing original OEM housings.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Find Useful\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/t2-pure-bare-copper-wire-round-solid-uncoated-0-1-2mm-10m\"\u003eT2 Pure Bare Copper Wire 0.1–2mm Round Solid Uncoated 10M\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/nitrile-work-gloves-anti-slip-full-finger-5-pair\"\u003e5-Pair Nitrile Work Gloves – Anti-Slip Full Finger Safety\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the BAT420 battery case kit include battery cells?\u003c\/h4\u003e\n\u003cp\u003eA: No. This kit includes only the plastic housing shell and the PCB charging protection board. Battery cells (Li-ion) must be sourced and installed separately by the user. This is strictly a DIY assembly component for experienced technicians.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which battery models is this housing compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This shell and PCB board is designed to be compatible with BAT420, BAT412A, BAT413A, and BAT411 Li-ion battery models operating at 10.8V or 12V configurations.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Will the PCB design always match the pictures shown?\u003c\/h4\u003e\n\u003cp\u003eA: The PCB layout and label design may vary slightly between production batches due to technological upgrades or component supplier adjustments. However, the functionality and compatibility of the board remain the same and will not affect normal use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What tools do I need to assemble this battery pack?\u003c\/h4\u003e\n\u003cp\u003eA: You will need specialized battery assembly tools, which typically include a spot welder (for nickel strip connections), soldering equipment, a multimeter, and appropriate safety gear. Do not order if you do not have access to these tools and the relevant technical knowledge.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the BAT420 battery case kit include battery cells?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This kit includes only the plastic housing shell and the PCB charging protection board. Battery cells (Li-ion) must be sourced and installed separately by the user. 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