{"product_id":"4s-6a-active-balancer-board-lithium-battery-capacitive","title":"4S 6A Active Balancer Board – Capacitive Lithium Battery","description":"\n\u003ch2\u003e4S 6A Active Balancer Board – Capacitive Energy Transfer for Lithium Battery Packs\u003c\/h2\u003e\n\u003cp\u003eKeep your 4-cell lithium battery pack running at peak efficiency with this \u003cstrong\u003e4S 6A Active Balancer Board\u003c\/strong\u003e. Designed for use with NCM and LiFePO4 battery chemistries, this capacitive-type balancer actively transfers energy between cells to equalize voltage, extending the overall lifespan and maximizing usable capacity of your battery pack. Ideal for solar energy storage systems, DIY powerbanks, electric vehicles, and off-grid setups.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Current Active Balancing:\u003c\/strong\u003e Dynamic balancing current of 0–6A automatically adjusts based on the voltage differential between cells — the greater the imbalance, the higher the balancing current.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacitive Energy Transfer:\u003c\/strong\u003e Uses capacitor-based topology for efficient, low-loss energy redistribution between cells — no wasted energy as heat.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Chemistry Compatibility:\u003c\/strong\u003e Supports both NCM (Li-ion) and LiFePO4 chemistries with an operating voltage range of 2.5–4.5V per cell.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Standby Power:\u003c\/strong\u003e Draws only 1.5mA–2.5mA during operation, making it ideal for always-on battery management applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Measures just 45 × 36mm — easy to integrate into tight battery enclosures and custom BMS builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Plastic + metal construction ensures reliable performance in a variety of environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4S (4-cell series)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBalancing Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–6A (dynamic, voltage-differential based)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5–4.5V per cell\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Chemistries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNCM (Li-ion), LiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandby Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5mA–2.5mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 × 36mm\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\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1× Active Balancer Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Wiring Note\u003c\/h3\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eAlways double-check your wiring before powering up.\u003c\/strong\u003e Incorrect wiring can cause irreversible damage to the balancer board. The balancing current is influenced by both the voltage differential between cells and the length\/resistance of your connecting wires — shorter, heavier-gauge wires will yield higher balancing currents.\u003c\/p\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSolar energy storage battery packs\u003c\/li\u003e\n  \u003cli\u003eDIY powerbanks and portable power stations\u003c\/li\u003e\n  \u003cli\u003eElectric bicycle and scooter battery packs\u003c\/li\u003e\n  \u003cli\u003eOff-grid and backup power systems\u003c\/li\u003e\n  \u003cli\u003eCustom BMS (Battery Management System) builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-cord-end-caps-with-loop-jewelry-making-6pcs\"\u003eStainless Steel Cord End Caps with Loop – Jewelry Findings\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-flat-disc-spacer-beads-gold-silver-jewelry-making\"\u003eStainless Steel Flat Disc Spacer Beads Gold Silver – 20-50pcs\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: What battery chemistries is the 4S 6A Active Balancer Board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This active balancer board is compatible with both NCM (Lithium-Ion) and LiFePO4 (Lithium Iron Phosphate) battery chemistries, operating within a per-cell voltage range of 2.5–4.5V, making it versatile for a wide range of 4S lithium battery pack applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does capacitive active balancing work compared to passive balancing?\u003c\/h4\u003e\n\u003cp\u003eA: Capacitive active balancing transfers energy from higher-voltage cells to lower-voltage cells using capacitors as the energy transfer medium. Unlike passive balancing — which dissipates excess energy as heat — active balancing redistributes energy efficiently, reducing waste and improving overall pack performance and longevity.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum balancing current, and can I control it?\u003c\/h4\u003e\n\u003cp\u003eA: The balancer supports a dynamic balancing current of 0–6A. The current is not manually set — it automatically adjusts based on the voltage differential between cells. A larger voltage gap between cells results in a higher balancing current. Wire length and resistance also affect the achieved current.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this balancer board without a separate BMS?\u003c\/h4\u003e\n\u003cp\u003eA: This board is a cell balancer, not a full Battery Management System (BMS). It handles cell voltage equalization only. For overcharge, over-discharge, and short-circuit protection, it should be used alongside a dedicated BMS module for a complete battery protection solution.\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\": \"What battery chemistries is the 4S 6A Active Balancer Board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This active balancer board is compatible with both NCM (Lithium-Ion) and LiFePO4 (Lithium Iron Phosphate) battery chemistries, operating within a per-cell voltage range of 2.5–4.5V, making it versatile for a wide range of 4S lithium battery pack applications.\"}}, {\"@type\": \"Question\", \"name\": \"How does capacitive active balancing work compared to passive balancing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Capacitive active balancing transfers energy from higher-voltage cells to lower-voltage cells using capacitors as the energy transfer medium. 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