18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  1. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  2. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  3. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  4. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  5. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct
  6. 18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct

18650 5S2P Battery Pack 18.5V 5200mAh Rechargeable Li-ion for Laptop Replacement Portable Projector Power Station Medical Device | CE UN38.3 | OEM Factory Direct

$28.00

📦 MOQ: 100 units | OEM & Custom Orders Welcome

SKU: HNF120023 Category: Tag:

🔋 18650 5S2P Battery Pack — 18.5V 5200mAh Rechargeable Li-ion Pack

Overview

This 18650 5S2P lithium-ion battery pack connects ten Grade A 18650 cells in a 5-series 2-parallel configuration, delivering 18.5V / 5200mAh (96.2Wh). The 18.5V output is the standard operating voltage for a wide range of HP and Compaq laptops, portable projectors, power tools, and medical portable equipment. With integrated BMS cell balancing and CE / UN38.3 certification, it serves as a reliable OEM replacement or new-design power solution. Full customization available for connector, housing, and capacity.

5S2P Architecture

┌──────────────────────────────────────────────────────┐
│ String 1: [A1]─[A2]─[A3]─[A4]─[A5] = 18.5V/2600mAh │
│                       ║                              │
│ String 2: [B1]─[B2]─[B3]─[B4]─[B5] = 18.5V/2600mAh │
│                  ↓ Parallel ↓                        │
│       Total: 18.5V / 5200mAh = 96.2Wh               │
│              10 cells total                          │
└──────────────────────────────────────────────────────┘

5S = 3.7V × 5 = 18.5V       ← laptop/projector voltage
2P = 2600mAh × 2 = 5200mAh  ← capacity

Key Specifications

ParameterSpecification
Configuration5S2P
Total Cells10× Grade A 18650
Cell Capacity2600mAh / cell
Nominal Voltage18.5V
Fully Charged21.0V
Capacity5200mAh
Energy96.2Wh
Internal Resistance≤180mΩ (pack)
Weight≈ 510g
Recommended Charge0.5C = 2.6A CC/CV
Max Charge Current5.2A (1C)
Continuous Discharge10.4A (2C)
Peak Discharge20.8A (4C)
Discharge Cut-off15.0V (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 Voltage19.0V (3.8V/cell)
Balance ConnectorJST-XH 6Pin (5S)
Discharge ConnectorDC 7.4×5.0mm / custom
Wire GaugeAWG16
CertificationCE / UN38.3 / RoHS

Full Voltage Reference

StateVoltageNote
Fully charged21.0V4.2V × 5 cells
Nominal18.5VStandard rating
Storage19.0V3.8V/cell — optimal
Low warning16.5V3.3V/cell — recharge soon
BMS cutoff15.0V3.0V/cell — hard stop
Overcharge cutoff21.25V4.25V/cell — BMS

18.5V — Laptop Compatibility Reference

BrandSeriesOriginal VoltageCompatible
HPPavilion, Compaq Presario18.5V✅ Direct match
HPEliteBook (older)18.5V✅ Direct match
CompaqPresario CQ series18.5V✅ Direct match
HPProBook (older)18.5V✅ Direct match
DellMost models19.5V❌ Voltage mismatch
LenovoMost models20V❌ Voltage mismatch
AppleMacBook (older)16.5V / 18.5V⚠️ Verify model

📌 18.5V is specific to HP / Compaq platforms. Always verify device voltage label before ordering. For 19V / 19.5V / 20V laptops, enquire about our 5S packs with adjusted voltage.

5S Voltage Family Comparison

ConfigVoltageChargedTypical Use
4S2P14.8V16.8VDrones, power tools
5S2P ⭐18.5V21.0VLaptops, projectors
5S2P (adj)19.0V21.5VUniversal laptops
5S2P (adj)19.5V22.0VDell/Asus laptops
6S2P22.2V25.2VHigh-power tools

📌 We can adjust cell chemistry or BMS configuration to output 19V / 19.5V / 20V for other laptop brands — contact us with your device spec.

Multi-Capacity SKU Options

SKUCellVoltageCapacityEnergyWeight
5S2P-44002200mAh18.5V4400mAh81.4Wh≈440g
5S2P-48002400mAh18.5V4800mAh88.8Wh≈470g
5S2P-5200 ⭐2600mAh18.5V5200mAh96.2Wh≈510g
5S2P-60003000mAh18.5V6000mAh111Wh≈570g
5S2P-68003400mAh18.5V6800mAh125.8Wh≈625g
5S2P-70003500mAh18.5V7000mAh129.5Wh≈640g

Runtime Estimation

DevicePower Draw5S2P-5200 Runtime
HP laptop (light use)25W≈ 3.3 hours
HP laptop (full load)45W≈ 1.8 hours
Portable projector30W≈ 2.7 hours
Portable monitor20W≈ 4.1 hours
Medical handheld15W≈ 5.5 hours
Power tool (mid)60W≈ 1.4 hours
Portable power station80W≈ 1.0 hour

📌 Based on 96.2Wh at 85% system efficiency.

BMS Protection — 10-Cell System

ProtectionThresholdFunction
⚡ Overcharge/cell4.25V cutoffAll 10 cells monitored
🔋 Over-discharge/cell2.75V cutoffPreserves cycle life
⚖️ Cell balancingAuto on chargeEqualizes both strings
🔥 Overcurrent>20.8A tripProtects device circuits
⚠️ Short-circuitInstant cutoffUser & device safety
🌡️ Over-temperature65°C cutoffThermal protection
🔁 Auto-recoveryAfter fault clearedField-friendly
📊 Smart BMS optionUART / I²CSOC reporting on request

Applications

IndustryTypical DevicesWhy 18.5V
💻 LaptopsHP / Compaq laptop replacementExact voltage match
📽️ ProjectionPortable projectors, mini beamers18V~19V input range
⚡ Portable PowerPower stations with 18V inputDirect compatibility
🔧 Power Tools18V cordless tool platforms±0.5V tolerance
🏥 MedicalPortable diagnostic, handheld monitorsCE certified
🏭 IndustrialMobile terminals, field instrumentsStable 5S output
🎬 Content CreationPortable studio lights, field monitors18V DC input standard
🌿 Remote StationsOff-grid sensors, outdoor equipmentLong runtime

✈️ IATA Air Freight Status

SKUEnergyIATA CategoryStatus
5S2P-440081.4WhSection IB✅ Standard DG
5S2P-480088.8WhSection IB✅ Standard DG
5S2P-520096.2WhSection IB✅ Below 100Wh
5S2P-6000111WhSection IB✅ Below 160Wh
5S2P-6800125.8WhSection IB✅ Below 160Wh
5S2P-7000129.5WhSection IB✅ Below 160Wh

✈️ All 6 SKUs qualify for air freight under IATA Section IB — none exceed the 160Wh limit. The 5S2P-5200 at 96.2Wh is the most logistics-friendly option.

Charging Guide

ModeCurrentTimeNotes
0.5C Standard2.6A≈ 2h✅ Best cycle life
1C Normal5.2A≈ 65min✅ Daily use
2C Fast10.4A≈ 32min⚠️ Occasional only
Storage2.6A → 19.0V—✅ >3 days storage

⚠️ Requires 21.0V / 5S balance charger with JST-XH 6Pin balance connector. Do NOT use standard laptop charger to charge this pack directly.

Default Package Configuration

ItemSpecification
Pack18650 5S2P 18.5V 5200mAh
Cells10× Grade A 18650 2600mAh
BMS✅ 10-cell balancing + full protection
Discharge connectorDC 7.4×5.0mm / XT60 (customizable)
Balance connectorJST-XH 6Pin (5S)
Wire gaugeAWG16
Wire length200mm
HousingPVC wrap / ABS case (select)
LabelStandard / OEM white-label
Stock✅ In stock

OEM / Custom Options

OptionDetails
Voltage18.5V / 19V / 19.5V / 20V (5S variants)
Capacity4400 ~ 7000mAh
Cell gradeGrade A / Grade A+
ConnectorDC barrel / XT60 / Anderson / custom
Balance leadJST-XH 6Pin (5S)
Wire length & gauge100~300mm / AWG14~AWG18
BMSStandard / Smart BMS with fuel gauge
HousingPVC / ABS / Aluminum / custom
CertificationCE, UN38.3, RoHS, UL1642, IEC62133
BrandingOEM / white-label
MOQ10 pcs

Certification & Compliance

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

Why Choose Us?

  • 🏭 Factory Direct — own 18650 pack assembly, zero intermediaries
  • 💻 Laptop voltage specialists — 18.5V / 19V / 19.5V / 20V all available
  • ✈️ All SKUs air-freight eligible — max 129.5Wh, all below 160Wh IATA limit
  • ⚖️ 10-cell BMS balancing — every pack balanced before shipment
  • 📋 CE + UN38.3 standard — full documentation included
  • 🔬 7-day OEM sample — any voltage variant, rapid turnaround
  • 🛠️ Full OEM service — spec to certified mass production

📩 Share your laptop model number or device voltage requirement — we’ll confirm compatibility and quote within 24 hours.

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