Battery Building ToolsCell Database LR2170SK

✱ Render

21.7 × 70.9 mm

21700NMC Mooch-tested · 16 A

Lishen LR2170SK

Name: Lishen LR2170SK Lithium Battery Cell
Brand: Lishen

Lishen

Capacity5800 mAh20.88 Wh

Mooch continuous16 ASize to this figure

Voltage window3.6 V2.75 – 4.2 V

Standard charge1160 mA~5 h to full

Build a pack with this cell →Download spec sheet (PDF)Mooch's test ↗

At 5800 mAh, this ranks #10 of 72 21700 cells in our database. Near the top for capacity among 21700 cells. More capacity than 88% of 21700 cells in our database, but lower discharge than average.

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Full specifications

Electrical
Chemistry	NMC
Nominal voltage	3.6 V
Max charge voltage	4.2 V
Discharge cutoff	2.75 V
Max continuous discharge	16A (Mooch-tested)
Mooch CDR (trusted)	16 A
Standard charge current	1160 mA
Standard discharge current	1160mA
Physical
Form factor	21700
Dimensions	21.7mm × 70.9mm
Top type	Flat Top
Protected	No
Performance
Capacity	5800 mAh
Energy	20.88 Wh
Energy density	796.3 Wh/L
Power density (volumetric)	2,197 W/L
Cycle life	500 cycles
Operating Limits
Charge temp	0°C to 55°C
Discharge temp	-20°C to 60°C

Independent test data: Mooch's test of the LR2170SK ↗

At the standard 1160 mA charge rate, a full charge takes about 5 hours. The last bit is a slow taper to top it off.

Voltage operating window

Cutoff
2.75VNominal
3.6VMax charge
4.2V

Usable range: 1.5V

C-rate conversion: Lishen LR2170SK (5800mAh)

C-Rate	Current (A)	Theoretical runtime
0.2C	1.16 A	5h 00m
0.5C	2.9 A	2h 00m
1C	5.8 A	1h 00m
2C	11.6 A	30m

Highlighted row is closest to the rated 16A continuous discharge.

Charging

Rate	Current	Estimated time
Standard	1,160 mA	~5h 00m
0.5C	2,900 mA	~2h 00m
1C	5,800 mA	~1h 00m

These are estimates for the constant-current phase. Real charge time is a bit longer because of the slow taper at the end.

Pack scaling

Series voltage configurations

Config	Nominal V	Max V	Min V	Common use
1S	3.6V	4.2V	2.8V	Flashlights, single-cell devices
2S	7.2V	8.4V	5.5V	RC vehicles, 7.2V packs
3S	10.8V	12.6V	8.3V	Power tools (10.8V nominal)
4S	14.4V	16.8V	11V	Ebike (small), some power tools
7S	25.2V	29.4V	19.3V	Ebike (24V system)
10S	36V	42V	27.5V	Ebike (36V system)
13S	46.8V	54.6V	35.8V	Ebike (48V standard)
14S	50.4V	58.8V	38.5V	Ebike (52V high-power)
16S	57.6V	67.2V	44V	DIY powerwall

Parallel capacity scaling

Config	Capacity	Energy	Max discharge
1P	5,800 mAh	20.9 Wh	16 A
2P	11,600 mAh	41.8 Wh	32 A
3P	17,400 mAh	62.6 Wh	48 A
4P	23,200 mAh	83.5 Wh	64 A
5P	29,000 mAh	104.4 Wh	80 A
6P	34,800 mAh	125.3 Wh	96 A

Example pack configurations

7S2P

24V ebike / small pack

14 cells25.2V nominal11,600mAh292Wh32A max

13S4P

48V ebike standard

52 cells46.8V nominal23,200mAh1086Wh64A max

16S4P

DIY powerwall

64 cells57.6V nominal23,200mAh1336Wh64A max

4S6P

Power tool replacement

24 cells14.4V nominal34,800mAh501Wh96A max

Design a custom pack with this cell:

Pack Planner →Pack Designer →

Application suitability

PowerwallsHigh capacity means more stored energy per cell. Fewer cells needed for a given kWh target.

Ebike PacksGood balance of capacity for range and discharge for hills. Works well in most ebike packs.

Car AudioMight work for smaller setups. Check your amp's peak current draw.

High-Drain VapingUsable in regulated mods at moderate wattage. Not recommended for mechanical mods.

FlashlightsHigh capacity means long runtime. Great for everyday carry and extended use.

Power ToolsSufficient discharge and capacity for most power tool packs.

Physical dimensions

Dimensions21.7mm × 70.9mm

TopFlat Top

Format21700

Similar cells

Same format and chemistry, within ±500mAh capacity:

Cell	mAh	CDR	Wh	Weight	Wh/kg
Lishen LR2170SK (this cell)	5800	16A	20.88	—	—
Vapcell F63	6250	12A	22.5	—	—
Linkdata 60P	6000	60A	21.6	68g	318
Vapcell F60	6000	12A	21.6	74g	292
Reliance RH60	5850	20A	21.1	71g	297
Reliance RS60	5850	50A	21.1	71.5g	295

Build with this cell

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Frequently asked questions

What is the capacity of the Lishen LR2170SK?

What is the maximum discharge rate of the Lishen LR2170SK?

How many LR2170SK cells do I need for a 48V ebike battery?

Can I use the LR2170SK for vaping?

What is the cycle life of the Lishen LR2170SK?

What temperature range can the LR2170SK operate in?

What size is the Lishen LR2170SK?

Handling and safety

Lithium cells can be dangerous if mishandled. A few things to keep in mind:

Never charge above 4.2V or discharge below 2.75V.
Store cells at around 3.6-3.8V (roughly 40-60% charge) for long-term storage.
Don't mix cells with different capacities, chemistries, or states of charge in a pack.
Inspect wraps before use. A torn wrap can cause a short circuit.
Always use a BMS or balance charger appropriate for your pack configuration.
Keep cells away from metal objects, keys, and coins. A short across the terminals can cause fire.

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Specs come from manufacturer datasheets and independent testing; Mooch-tested discharge ratings are shown when available because they reflect real continuous performance better than headline datasheet numbers. Browse the full 18650 & 21700 cell database to compare every cell.

Disclaimer: We do our best to keep the information on this page accurate, but we cannot guarantee that all specifications are correct or up to date. Cell characteristics can vary between production batches and may change over time. Do not rely solely on this data for safety-critical applications. Always verify against the manufacturer's official datasheet before use.