LISHEN LR2170SZ 5000mAh 15A 21700 Li-ion Cell for Protected Energy Storage, Outdoor Power & Long-Runtime Packs (1–100 PCS)

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.

Watch DXF Batteries in Action

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.

Explore battery content on the DXF YouTube channel.