18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  1. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  2. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  3. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  4. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  5. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  6. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct
  7. 18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct

18650 3S2P Battery Pack 11.1V 4500mAh Rechargeable Li-ion for Laptop Power Tool Portable Power Station Robot AGV Medical Device | CE UN38.3 | OEM Factory Direct

$35.00

📦 MOQ: 100 units | OEM & Custom Orders Welcome

SKU: HNF120031 Category: Tag:

🔋 18650 3S2P Battery Pack — 11.1V 4500mAh Rechargeable Li-ion Pack

Overview

This 18650 3S2P lithium-ion battery pack connects six Grade A 18650 cells — three in series, two in parallel — delivering stable 11.1V / 4500mAh (49.95Wh). The 4500mAh capacity makes it a strong mid-range option between the standard 5200mAh (2600mAh/cell) and budget 4400mAh (2200mAh/cell) configurations — offering excellent runtime, competitive weight, and strong cycle performance. Ideal for laptops, portable power stations, power tools, medical devices, and industrial robots. CE and UN38.3 certified, in stock, full OEM customization available.

3S2P Architecture

┌──────────────────────────────────────────┐
│ String 1: [A1] ── [A2] ── [A3]  = 11.1V │
│                   ║                      │
│ String 2: [B1] ── [B2] ── [B3]  = 11.1V │
│               ↓ Parallel ↓               │
│    Total: 11.1V / 4500mAh = 49.95Wh     │
│           6 cells total                  │
└──────────────────────────────────────────┘

3S = 3.7V × 3   = 11.1V
2P = 2250mAh × 2 = 4500mAh

Key Specifications

ParameterSpecification
Configuration3S2P
Total Cells6× Grade A 18650
Cell Capacity2250mAh / cell
Nominal Voltage11.1V
Fully Charged12.6V
Capacity4500mAh
Energy49.95Wh
Internal Resistance≤ 180mΩ (pack)
Weight≈ 270g
Recommended Charge0.5C = 2.25A CC/CV
Max Charge Current4.5A (1C)
Continuous Discharge9.0A (2C)
Peak Discharge18.0A (4C)
Discharge Cut-off9.0V (3.0V/cell)
Self-discharge Rate≤ 2% / month
Cycle Life≥ 500 cycles
Capacity Retention≥ 80% at 500 cycles
Operating Temp-20°C ~ 60°C
Storage Temp-10°C ~ 25°C
Storage Voltage11.4V (3.8V/cell)
Balance ConnectorJST-XH 4Pin (3S)
Discharge ConnectorXT60 / DC Jack / custom
Wire GaugeAWG18
Wire Length150mm
CertificationCE / UN38.3 / RoHS

Full Voltage Reference

StateVoltageNote
Fully charged12.6V4.2V × 3
Nominal11.1VStandard rating
Storage11.4V3.8V/cell — optimal
Low warning9.9V3.3V/cell — recharge
BMS cutoff9.0V3.0V/cell — hard stop
Overcharge cutoff12.75V4.25V/cell — BMS

3S2P Full Capacity Comparison

SKUCellVoltageCapacityEnergyWeightGrade
3S2P-44002200mAh11.1V4400mAh48.84Wh≈265gStandard
3S2P-4500 ⭐2250mAh11.1V4500mAh49.95Wh≈270gMid-grade
3S2P-48002400mAh11.1V4800mAh53.28Wh≈285gStandard
3S2P-52002600mAh11.1V5200mAh57.72Wh≈305gGrade A
3S2P-60003000mAh11.1V6000mAh66.6Wh≈330gHigh Grade
3S2P-72003600mAh11.1V7200mAh79.92Wh≈375gPremium

⭐ 4500mAh positioning: Sits between budget 4400mAh and standard 5200mAh — ideal when cost efficiency is prioritized over maximum capacity.

3S2P-4500 vs Nearby SKUs

Metric3S2P-44003S2P-45003S2P-5200
Cell capacity2200mAh2250mAh2600mAh
Energy48.84Wh49.95Wh57.72Wh
Weight≈265g≈270g≈305g
Cost indexBudgetMidStandard
Cycle life≥500≥500≥500
Best forCost-sensitiveBalancedPerformance

Runtime Estimation

DevicePower DrawRuntime
Laptop (light use)25W≈ 1.7 hours
Laptop (full load)45W≈ 57 min
Portable power station80W≈ 38 min
Cordless power tool60W≈ 51 min
Medical handheld15W≈ 2.8 hours
Industrial robot arm40W≈ 1.5 hours
Handheld terminal10W≈ 4.2 hours
UPS backup20W≈ 2.1 hours

📌 Based on 49.95Wh at 85% efficiency.

BMS Protection — 6-Cell System

ProtectionThresholdFunction
⚡ Overcharge/cell4.25V cutoffPrevents thermal runaway
🔋 Over-discharge/cell2.75V cutoffPreserves cycle life
⚖️ Cell balancingAuto on chargeEqualizes all 6 cells
🔥 Overcurrent>18A tripProtects tool & robot circuits
⚠️ Short-circuitInstant cutoffUser & device safety
🌡️ Over-temperature65°C cutoffThermal protection
🔁 Auto-recoveryAfter fault clearedField-friendly

Applications

IndustryTypical Devices
💻 Laptops10.8V~11.1V laptop replacement packs
🔧 Power ToolsCordless drills, grinders, sanders
⚡ Portable PowerMid-size power stations, backup packs
🤖 RoboticsLight robot arms, educational platforms
🏥 MedicalPortable monitors, handheld diagnostics
🏭 IndustrialAGV carts, mobile terminals, field instruments
💡 UPS & BackupServer UPS, emergency lighting
🛵 E-mobilityLow-power e-scooters, electric wheelchairs

✈️ IATA Air Freight Status

ParameterValue
Energy49.95Wh
IATA CategorySection II
Air status✅ Minimal restrictions
Quantity limitNo limit per package

✈️ At 49.95Wh, this pack qualifies as IATA Section II — the most logistics-friendly category for lithium battery packs. Lowest DG shipping cost and documentation requirements.

Charging Guide

ModeCurrentTimeNotes
0.5C Standard2.25A≈ 2h✅ Best cycle life
1C Normal4.5A≈ 65min✅ Daily use
2C Fast9.0A≈ 32min⚠️ Occasional only
Storage mode2.25A → 11.4V—✅ >3 days storage

⚠️ Use 12.6V / 3S balance charger with JST-XH 4Pin connector only.

Default Package Configuration

ItemSpecification
Pack18650 3S2P 11.1V 4500mAh
Cells6× Grade A 18650 2250mAh
BMS✅ 6-cell balancing + full protection
Discharge connectorXT60 / DC Jack (select)
Balance connectorJST-XH 4Pin (3S)
Wire gaugeAWG18
Wire length150mm
HousingPVC wrap / ABS case (select)
LabelStandard / OEM white-label
Stock✅ In stock

OEM / Custom Options

OptionDetails
Capacity4400 / 4500 / 4800 / 5200 / 6000 / 7200mAh
Configuration3S1P / 3S2P / 3S3P / 3S4P
ConnectorXT60 / DC Jack / Anderson / bare wire
Balance leadJST-XH 4Pin (3S) standard
Wire length & gauge100~300mm / AWG14~AWG20
BMSStandard / Smart BMS with fuel gauge
HousingPVC wrap / ABS hard case / custom
CertificationCE, UN38.3, RoHS, UL1642, IEC62133
BrandingOEM / white-label labeling
MOQ20 pcs

Certification & Compliance

CertificateScopeStatus
✅ CEEU marketStandard
✅ UN38.3Global freightStandard
✅ RoHSSubstance complianceStandard
✅ MSDSSafety data sheetStandard
📋 IEC 62133Battery safetyOn request
📋 UL 1642US marketOn request

Why Choose Us?

  • 🏭 Factory Direct — own 18650 pack assembly, zero intermediaries
  • ✈️ Section II air freight — 49.95Wh, lowest DG logistics complexity
  • ⚖️ 6-cell BMS balancing — every pack balanced before shipment
  • 🔋 Grade A cells — 100% capacity verified before assembly
  • 📋 CE + UN38.3 standard — full documentation included
  • 🔬 7-day OEM sample — any capacity, any connector
  • 🛠️ Full OEM service — spec to certified mass production

📩 Need 11.1V pack? Tell us your device current draw and runtime requirement — optimal 3S configuration quoted within 24 hours.

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