Custom lithium battery packs for device makers · Made in Shenzhen, shipped worldwide

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01 / 07

Medical Device Batteries

Custom lithium battery packs for portable medical devices.

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Custom solutionsFrom your spec to a tested batchCells, BMS, case, charger and label, built around your device.See how we work
Development ProcessFive stages from your brief to batch deliveryBMS DesignProtection, balancing and data to your deviceCell Selection & SourcingLi-ion, LiFePO4 or LiPo from leading brandsPrototyping & SamplesCharged samples you test before the batchOEM / ODMYour spec or our design, under your brandCost & MOQWhat drives price and minimum order
01 / 05

Replacement Battery Packs

Custom lithium replacement packs for lead-acid batteries and light EVs.

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18650BD 3.6V 3.2Ah 1S1P
Cylindrical Cells

18650BD 3.6V 3.2Ah 1S1P

Li-ionOEM / ODM

This 18650 cylindrical cell is a Li-ion rechargeable cell rated at 3.6V 3.2Ah, supplied by Jetray Battery. We supply it as single cells for your production line or assemble it into finished packs with BMS, wiring and housing. Typical uses include custom battery pack assembly, flashlights and portable lighting, power tools and small appliances.

  • Nominal voltage3.6V
  • Capacity3.2Ah
  • Energy11.5Wh
  • Internal resistance60mΩ
  • Fully customizableVoltage, capacity, BMS, housing
  • Documents readyDatasheet, MSDS, UN38.3
  • 24-hour replyDirect from our engineers
Specifications

Technical data

Standard model values. Every parameter below can be adjusted for your project.

Nominal Voltage3.6V
Capacity3.2Ah
Battery Model3.6V 3.2Ah (with Panasonic 18650BD)
ChemistryLi-ion
Shipment Voltage3.5–3.8V
Charge Cut-off Voltage4.2V
Discharge Cut-off Voltage3.0V
Internal Resistance≤60mΩ
Max Charge Current0.5C (for continuous mode)
Max Continuous Discharge Current1C (for continuous mode)
DimensionsD-18.5mm, L-68.0mm
WeightApprox. 70g
BMS / ProtectionShort-circuit protection
CertificationUL, IEC, CE, UN38.3, etc.

Voltage window 3 – 4.2 V

3 V cut-off3.6 V nominal4.2 V full
Need different specs?

Send your voltage, capacity, current and size limits. We build packs to your drawing.

Applications

Where it is used

Custom battery pack assembly
Flashlights and portable lighting
Power tools and small appliances
IoT, smart home and handheld devices
Customization & BMS

Built around your equipment

Voltage, capacity, size, BMS and communication can all be changed for OEM / ODM projects. Start from this model or from your own drawing.

FAQ & safety

Common questions

We offer Li-ion (NCM / NCA), LiFePO4 and LTO cells, chosen to match your project needs.

Yes. We provide structural design so the pack fits your housing, connector and mounting points.

Overcharge, over-discharge, overcurrent, short-circuit and temperature protection, SOC / SOH display and communication protocols such as CAN and RS485.

Yes. Charging rates from 0.5C to 2C are possible, depending on the cell specification.

Typically 12–36 months, depending on the project agreement.

Keep them at 50–60% state of charge in a dry, ventilated place between −10 °C and 35 °C.

Safe handling

Heat and damage

Never heat, disassemble or modify the battery, or dispose of it in a fire. Do not pierce, hit, step on or drop it.

If fluid leaks

Do not touch it with bare hands. Rinse eyes, mouth or skin with clean water, see a doctor if needed and contact Jetray after-sales.

Keep it dry

Do not get the battery wet.

Storage conditions

Do not use or store the battery in direct sunlight, high heat or humidity, a hot car, or near heat sources.

OEM & custom packs

Ready to power your next project?

Tell us your voltage, capacity, size and application. Our engineers reply within 24 hours with a design proposal and quotation.

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