{"title":"Parallel Packs 18650","description":"\u003ch2\u003e18650 Parallel Packs – Increase Capacity, Extend Runtime, Maintain 3.7V Output\u003c\/h2\u003e\n\u003cp\u003eWelcome to our \u003cstrong\u003e18650 Parallel Packs\u003c\/strong\u003e collection. When you need to extend device runtime and increase load capacity without altering the native 3.7V (or 3.2V LiFePO₄) voltage platform, parallel-connected 18650 battery packs provide the ideal solution. By connecting multiple cells positive-to-positive and negative-to-negative, the pack \u003cstrong\u003evoltage remains constant\u003c\/strong\u003e while \u003cstrong\u003etotal capacity (mAh) and maximum discharge current (A) scale additively\u003c\/strong\u003e. This collection offers standard 2P, 3P, and 4P configurations—perfect for high-capacity power banks, long-duration portable lighting, medical instrumentation, industrial sensors, and any application demanding extended operational autonomy.\u003c\/p\u003e\n\u003ch3\u003eCore Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditive Capacity – Extended Runtime:\u003c\/strong\u003e Total pack capacity = single cell capacity × number of parallel cells. Example: 2 × 3500mAh = \u003cstrong\u003e7000mAh\u003c\/strong\u003e; 4 × 3500mAh = \u003cstrong\u003e14000mAh\u003c\/strong\u003e. Runtime multiplies accordingly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased Discharge Current:\u003c\/strong\u003e Maximum continuous discharge current = single cell CDR × number of parallel cells. Two 10A cells in parallel safely deliver \u003cstrong\u003e20A\u003c\/strong\u003e continuous.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnchanged Nominal Voltage:\u003c\/strong\u003e Pack voltage remains 3.7V (Li-ion) or 3.2V (LiFePO₄)—no need to replace existing devices or chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Voltage Sag:\u003c\/strong\u003e Load current is shared across multiple cells, lowering effective internal resistance and minimizing voltage drop under heavy load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Configurations:\u003c\/strong\u003e Standard offerings include 2P, 3P, and 4P. Custom arrangements (e.g., 2S2P, 3S4P) are available upon request.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eParallel (P) vs. Series (S) – Key Distinction\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" class=\"pp-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003e\u003cstrong\u003eParallel (P)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eSeries (S)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eSame as single cell (3.7V \/ 3.2V)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eAdds up (e.g., 2S = 7.4V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eAdds up (e.g., 2P = 2× capacity)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eSame as single cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\u003cstrong\u003eDischarge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eAdds up\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eLimited by weakest cell in series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\u003cstrong\u003eBest Suited For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eLonger runtime at same voltage\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eDevices requiring higher voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTypical Parallel Pack Configurations\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" class=\"pp-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eConfiguration\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eTotal Capacity (3500mAh cells)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eTotal Discharge (10A cells)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eIdeal Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\n\u003cstrong\u003e2P\u003c\/strong\u003e (2 cells)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e7000mAh\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e20A\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003ePortable power banks, high-capacity flashlights\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\n\u003cstrong\u003e3P\u003c\/strong\u003e (3 cells)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e10500mAh\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e30A\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eLarge power banks, portable work lights\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\n\u003cstrong\u003e4P\u003c\/strong\u003e (4 cells)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e14000mAh\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e40A\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eMedical carts, high-capacity backup power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\n\u003cstrong\u003e2S2P\u003c\/strong\u003e (4 cells, custom)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e7000mAh @ 7.4V\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e20A @ 7.4V\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003ePower tools, e-bikes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e\n\u003cstrong\u003e3S4P\u003c\/strong\u003e (12 cells, custom)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e14000mAh @ 11.1V\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e40A @ 11.1V\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eE-scooters, robotics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCell Matching \u0026amp; Safety – Critical for Parallel Packs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity \u0026amp; Internal Resistance Matching:\u003c\/strong\u003e All cells within a parallel group must be matched for capacity (±3%) and IR (±5mΩ). Mismatched cells create circulating currents that degrade performance and create safety hazards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Matching:\u003c\/strong\u003e Prior to assembly, all cells must be at identical state-of-charge (±0.05V). Large voltage differences cause uncontrolled equalization currents that can damage cells or weld tabs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame Brand \u0026amp; Batch:\u003c\/strong\u003e Best practice mandates using identical cell models from the same production lot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMS Integration Recommended:\u003c\/strong\u003e A Battery Management System is strongly advised for 3P+ packs to protect against over-discharge, overcharge, and short-circuit events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProper Insulation:\u003c\/strong\u003e Packs must be wrapped with high-grade PVC heat shrink and include insulating terminal rings to prevent accidental short circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications for 18650 Parallel Packs\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" class=\"pp-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eApplication\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eRecommended Pack\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;\"\u003eBenefit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eHigh-capacity power bank \/ USB charger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P–4P (7000–14000mAh)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eMultiple full charges for phones and tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eHigh-intensity flashlight \/ searchlight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P–3P (7000–10500mAh)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eExtended turbo runtime without battery changes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003ePortable medical monitor \/ infusion pump\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P (protected cells, 7000mAh)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eLong shift operation with safety redundancy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eIndustrial IoT sensor \/ data logger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P–4P (low self-discharge)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eMonths of unattended field operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003ePortable speaker \/ camping lantern\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P–3P (7000–10500mAh)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eAll-day playback or overnight illumination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eRC receiver pack \/ backup power\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e2P (7000mAh)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eReliable auxiliary power, extended flight time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eDIY power wall \/ low-voltage DC system\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003e4P+ strings\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;\"\u003eScalable capacity for low-voltage inverter input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhy Choose Our 18650 Parallel Packs?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Cell Matching:\u003c\/strong\u003e Every parallel pack is assembled using capacity-sorted (≤3% variance), IR-matched (≤5mΩ deviation), and voltage-balanced (±0.02V) Grade-A cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Spot Welding:\u003c\/strong\u003e Constructed with \u003cstrong\u003e0.15mm–0.2mm pure nickel-plated steel strips\u003c\/strong\u003e for low-resistance, high-current handling and durable weld joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization Options:\u003c\/strong\u003e Beyond standard 2P\/3P\/4P, we offer custom dimensions, lead wires (silicone), connectors (JST, XT30, XT60, DC barrel), and integrated BMS\/PCM boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Insulation:\u003c\/strong\u003e Each pack is finished with premium PVC heat shrink and includes insulating terminal rings for electrical isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity Verification:\u003c\/strong\u003e Every completed pack undergoes a full charge\/discharge capacity test to verify actual mAh rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e 12‑month warranty and dedicated technical support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e⚠️ Usage \u0026amp; Safety Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo Not Mix Cell Types:\u003c\/strong\u003e Never mix cells of differing capacity, age, or chemistry within a parallel group.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Current Limit:\u003c\/strong\u003e Recommended charging current should not exceed \u003cstrong\u003e0.5C\u003c\/strong\u003e of the pack's total capacity (e.g., ≤3.5A for a 7000mAh pack).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Use Inspection:\u003c\/strong\u003e Upon receipt, measure pack voltage (should be 3.5V–3.7V storage state) and inspect for physical damage before use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e👇👇👇 Browse the standard parallel pack configurations below. For custom series-parallel combinations, specific connectors, or BMS integration, please contact our engineering team for a tailored solution.\u003c\/p\u003e","products":[],"url":"https:\/\/oneandes.com\/collections\/18650-parallel-packs.oembed","provider":"OneAndes","version":"1.0","type":"link"}