The LISHEN LR2170SZ 21700 lithium-ion cell is a high-capacity option for professionally built packs where runtime matters more than extreme discharge bursts. The supplied specification image lists 5000mAh nominal and 4900mAh rated capacity at 0.2C, 3.6V nominal voltage and 15A maximum discharge. It is better suited to compatible protected energy-storage, outdoor-power and moderate-current designs than high-current racing RC applications.

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Key Features

• High-capacity 21700 format: 5000mAh nominal / 4900mAh rated at 0.2C, as listed in the supplied specification.
• 15A maximum discharge: Intended for loads within the cell and pack design limits, not ultra-high-drain racing builds.
• 3.6V nominal voltage: Charge limit 4.2V; discharge limit 2.5V as listed.
• AC internal resistance: 14mΩ typical in the supplied specification.
• Long-runtime focus: For appropriate protected portable-power and storage assemblies.

Specifications, Per Cell

• Manufacturer: LISHEN
• Model: LR2170SZ (21SZ in supplied specification)
• Cell format: 21700 rechargeable lithium-ion
• Nominal capacity at 0.2C: 5000mAh
• Rated capacity at 0.2C: 4900mAh
• Nominal voltage: 3.6V
• Charge voltage limit: 4.2V
• Discharge voltage limit: 2.5V
• Standard charge current: 1A
• Charge current used for cycle test: 2.5A
• Discharge current used for cycle test: 5A
• Maximum discharge current: 15A
• AC internal resistance: 14mΩ typical
• Charge temperature, cell surface: 0°C to 50°C
• Discharge temperature, cell surface: −20°C to 60°C
• Cycle-test result: 80% capacity at 800 cycles under the listed 2.5A charge / 5A discharge, 2.75–4.2V test conditions; actual life depends on use.
• Weight: 70g typical
• Gravimetric energy density at 0.2C: 257Wh/kg
• Volumetric energy density at 0.2C: 724Wh/L

Package Options

Select 1, 10, 20, 50 or 100 cells according to the chosen product option. Verify the selected option and pricing before checkout.

Intended Applications

For qualified integrators building protected, moderate-current battery packs for portable energy storage, outdoor power supplies, long-runtime electronics and compatible lower-drain model applications. Not recommended for racing RC vehicles or aircraft that demand high burst currents.

Usage & Safety Guidelines

• Use only with compatible charging controls, cell protection, insulation and a professionally designed pack. Do not use a loose unprotected cell in a consumer device.
• Do not exceed the listed 4.2V charge limit, discharge below 2.5V, or exceed the 15A maximum discharge rating.
• Inspect the wrapper and terminals; never use damaged cells or carry cells loose with metal objects.
• Follow the pack design and verify cell condition and voltage balance before connecting multiple cells.
• For extended storage, store partially charged in a cool, dry location and follow the manufacturer's detailed handling instructions.

Why Choose DXF?

Select a quantity that suits your professionally protected long-runtime pack project, and verify the cell specifications against your equipment before assembly.

Perfect For

Protected portable-power and energy-storage packs where 5000mAh nominal capacity is more important than extreme discharge current.

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WARNING – For professional customers only. The LISHEN LR2170SD is a reclaimed, unprotected 21700 lithium-ion cell rated at 5000mAh. It is a component for professionally designed packs with suitable BMS/PCM, insulation, housing and safety protection. The supplied product information lists 10A maximum current and 5A recommended / optimal continuous current; 10A must not be presented as the recommended sustained draw. This cell is not a ready-to-use consumer battery.

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Key Features

• 5000mAh rated capacity: For compatible high-capacity professional 21700 pack designs.
• 10A maximum current: With 5A recommended / optimal continuous current.
• Reclaimed condition: Minor cosmetic removal marks and production dates may vary by delivery.
• Unprotected cell: Requires professionally designed pack-level protection and inspection.
• Flexible quantities: Choose 1, 10, 20, 50 or 100 PCS for qualified pack-building work.

Specifications, Per Cell

• Original manufacturer: LISHEN
• Model: LR2170SD [reclaimed]
• Short name: SD
• Type and size: Li-Ion, 21700
• Rated capacity: 5000mAh
• Maximum current: 10A
• Recommended / optimal continuous current: 5A
• State of charge: Approximately 3.45V
• Cell condition: Reclaimed
• Production date: Varies depending on deliveries
• Warranty: 3 months
• Documentation: LISHEN LR2170SD documentation

Package Includes

LISHEN LR2170SD cells in the selected quantity, subject to the product option chosen at checkout. No additional accessories are specified.

Choose Your Quantity

• 1 PCS: One cell for qualified inspection or professional pack work; the single-cell option price applies to one cell.
• 10 PCS: Small-batch professional pack assembly.
• 20 PCS: Multi-cell protected pack designs.
• 50 PCS: Workshop-scale integration.
• 100 PCS: Volume assembly by qualified builders.

3-Month Warranty & Customer Support

The supplied reclaimed-cell information states a 3-month warranty. Contact the seller with order or product questions.

Intended Use & Restrictions

For professional battery-pack manufacturers, technical service providers, system integrators and other qualified entities able to design, assemble and test lithium-cell packs. Manufacturer names and model designations identify factory origin and model only; seller authorization is not claimed unless stated separately.

Usage & Safety Guidelines

• Not a ready-to-use consumer battery; it has no individual protection circuit. Use only in a professionally designed pack with appropriate BMS/PCM, insulation, housing, and protection against short circuit, overcharge, over-discharge and overheating.
• Do not use as a loose replaceable cell in e-cigarettes, flashlights, toys, power banks, RC devices or other consumer devices unless integrated into a professionally made and protected pack.
• Never carry loose in a pocket or bag with metal objects. Short circuits can cause fire, explosion, burns or property damage.
• Reject cells with abnormal voltage, damaged casing, corrosion or other abnormal conditions. Verify equal voltages before connecting reclaimed cells.
• Do not solder directly to terminals without an assembly procedure approved by a professional integrator. Follow the pack design and cell documentation.

Why Choose DXF?

Select the quantity appropriate for your professional project, and inspect, match and protect every reclaimed cell before assembly.

Perfect For

Qualified pack builders and integrators designing protected 21700 battery packs whose current requirements are compatible with the cell rating. Not for loose or unprotected consumer-device use.

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WARNING – Professional customers only. The reclaimed LISHEN LR2170LA 4000mAh 21700 lithium-ion cell is a component for professional assembly of battery packs with appropriate BMS/PCM, insulation, housing and safety protections. The supplied product information lists 45A as the maximum current and 15A as the recommended / optimal continuous current; do not treat 45A as the recommended sustained draw. The cell is not a ready-to-use consumer battery.

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Key Features

• 4000mAh rated capacity: For suitable, professionally designed 21700 packs.
• 45A maximum current: Listed maximum; recommended / optimal continuous current is 15A.
• Reclaimed cell: Cosmetic removal marks and production date may vary by delivery.
• Unprotected component: Requires suitable pack-level protection and qualified assembly.
• Multiple quantities: Select 1, 10, 20, 50 or 100 PCS.

Specifications, Per Cell

• Original manufacturer: LISHEN
• Model: LR2170LA [reclaimed]
• Short name: LA
• Cell type and size: Li-Ion, 21700
• Rated capacity: 4000mAh
• Maximum current: 45A
• Recommended / optimal continuous current: 15A
• State of charge: Approximately 3.45V
• Cell condition: Reclaimed
• Production date: Varies depending on deliveries
• Warranty: 3 months
• Documentation: LR2170LA documentation

Package Options

Select 1, 10, 20, 50 or 100 cells as offered in the product options. The single-cell price applies to one cell; check the selected option for multi-cell pricing. Inspect and verify each reclaimed cell before pack assembly.

3-Month Warranty & Customer Support

This reclaimed-cell listing states a 3-month warranty. Contact the seller for support with the order or product information.

Intended Use & Restrictions

Intended only for professional customers, including battery-pack manufacturers, technical service providers, system integrators and entities qualified to design, assemble and test packs built from lithium cells. Manufacturer names and model designations identify factory origin and model only; seller authorization by the manufacturer is not claimed unless expressly stated separately.

Usage & Safety Guidelines

• The cell is not a ready-to-use consumer battery and has no individual protection circuit. Integrate only into a professionally designed pack with appropriate BMS/PCM, insulation, housing and protection against short circuit, overcharge, over-discharge and overheating.
• Do not use as a single, loose, replaceable battery in e-cigarettes/vapes, flashlights, toys, power banks, RC devices or other consumer devices unless part of a professionally made and protected pack.
• Do not carry loose in a pocket or bag with metal objects. A terminal short circuit can cause fire, explosion, burns or property damage.
• Do not use a damaged cell, including one with voltage below documented limits, a crushed casing, corrosion or other abnormal condition.
• Do not solder directly to terminals without technology and procedure approved by a professional integrator. Follow the pack design and documentation.
• Before assembly, inspect reclaimed cells and independently verify equal voltages of cells to be connected.

Why Choose DXF?

Choose the quantity appropriate for your professional pack-building project, then verify reclaimed cell condition, matching and protection design before use.

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