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Two cylindrical 21700 lithium-ion cells with flat silver tops, side by side

TianJin Lishen Battery

TianJin Lishen Battery LR2170SD 21700 4900mAh 3.7V 9.6A Flat Top 2PCS

SKU CH-A50M-4HP8H

Two flat-top 21700 lithium-ion cells deliver 4900 mAh at 3.7 V with a 9.6 A continuous discharge rating

  • Battery typeLi-ion
  • High capacity 4900mAh powers devices longer
  • 6A continuous discharge supports high-drain tools
  • Flat-top 21700 format fits compatible equipment
  • Li-ion chemistry avoids memory effect
  • Two-cell pack supplies ready-to-use spares

Two-Cell 21700 Pack for High-Drain Devices

This pair of Lishen LR2170SD cells delivers 4900mAh at 3.7V with a 9.6A continuous discharge rating. They suit flashlights, power-tool packs and other gear that draws steady high current from the 21700 form factor.

Flat-Top Li-ion Build with 21mm Diameter

Each cell measures 21mm by 70mm and uses a flat-top terminal, so it fits holders and spring contacts designed for that profile. The lithium-ion chemistry has no memory effect and is pollution-free, supporting repeated recharge cycles without capacity loss from partial use.

Limited to Single-Cell or Matched Multi-Cell Use

The 9.6A maximum discharge sets a hard ceiling; devices demanding more current will stress the cells beyond spec. Users needing higher voltage or capacity must build packs with proper balancing and protection circuitry, as these bare cells include none.

How it compares

Measured against everything we stock in Disposable & Rechargeable Batteries, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 83% of the 985 comparable items (median $28.99).

Specifications

Power
Battery typeLi-ion

Questions about this item

What continuous discharge current does the 21700 LR2170SD cell support?

The cell is rated for a maximum continuous discharge of 9.6A at 3.7V.

Will the flat-top 21mm x 70mm cells fit a spring-loaded 21700 battery tube?

Yes, the flat-top 21mm diameter by 70mm length cells suit spring-loaded 21700 tubes that accept unprotected flat tops.

How should the two LR2170SD cells be oriented when inserted into a dual-battery flashlight?

Insert both cells with the flat positive end toward the head and the negative end toward the tailcap, following the flashlight polarity markings.

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