{"product_id":"li-ion-battery-protection-circuit-board-pcb-20v-p108-p103-rb18l4-power-tools","title":"Li-Ion Battery Protection PCB for 20V P108 P103 RB18L4 Tools","description":"\n\u003ch2\u003eLi-Ion Battery Charging Protection Circuit Board for 20V Power Tools\u003c\/h2\u003e\n\u003cp\u003eKeep your 20V power tool batteries running safely and reliably with this brand-new, high-quality Li-Ion Battery Charging Protection Circuit Board (PCB). Designed as a direct replacement for compatible battery packs including P108, P103, and RB18L4 models, this PCB board helps regulate charging cycles and protects your battery cells from overcharge, over-discharge, and short-circuit conditions — extending the working life of your power tool batteries.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e Compatible with 20V P108, P103, and RB18L4 power tool battery packs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Functions:\u003c\/strong\u003e Guards against overcharge, over-discharge, and short-circuit events during use and charging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e 11 × 4 cm (approx. 4.33 × 1.57 in) — fits neatly inside compatible battery housings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Construction:\u003c\/strong\u003e Sturdy green PCB material built for durability and stable electrical performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Swap:\u003c\/strong\u003e Straightforward replacement for DIY battery repair and rebuild projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New:\u003c\/strong\u003e Supplied in new condition, ready to install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB (Printed Circuit Board)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11 × 4 cm \/ 4.33 × 1.57 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20V P108, P103, RB18L4 power tool battery packs\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 × Protection Circuit Board (PCB)\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\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePhotos may not reflect the actual size — please refer to the specifications above for accurate dimensions.\u003c\/li\u003e\n  \u003cli\u003ePlease allow ±5–10 mm tolerance due to manual measurement.\u003c\/li\u003e\n  \u003cli\u003eActual color may vary slightly from images due to monitor settings and lighting conditions.\u003c\/li\u003e\n  \u003cli\u003eThis board is intended for use by individuals comfortable with electronics repair. If you are unsure, consult a qualified technician.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\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 — protect your hands during battery repair work\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\u003c\/a\u003e — keep your power tools stocked with quality accessories\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e — a handy tool for opening battery housings\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: Which battery models is this protection circuit board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This Li-Ion battery charging protection PCB is designed to be compatible with 20V power tool battery packs, specifically P108, P103, and RB18L4 models. Please verify your battery model number before purchasing to ensure a proper fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does a battery protection circuit board actually do?\u003c\/h4\u003e\n\u003cp\u003eA: A battery protection circuit board (PCB) monitors and manages the charging and discharging process of Li-Ion battery cells. It helps prevent overcharging, over-discharging, and short-circuit conditions, which can otherwise damage the cells or reduce battery lifespan. This makes it an essential component for safe and efficient power tool battery operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this PCB easy to install for a DIY battery rebuild?\u003c\/h4\u003e\n\u003cp\u003eA: This PCB is designed as a straightforward drop-in replacement for compatible battery packs, making it suitable for DIY battery repair and rebuild projects. Basic electronics knowledge and soldering skills are recommended. If you are not comfortable working with battery electronics, we suggest seeking assistance from a qualified technician.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is included in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes 1 × Li-Ion Battery Charging Protection Circuit Board (PCB). No additional tools or accessories are included.\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\": \"Which battery models is this protection circuit board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Li-Ion battery charging protection PCB is designed to be compatible with 20V power tool battery packs, specifically P108, P103, and RB18L4 models. 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