Lithium Ion Battery

Lithium Ion Battery Pack

A lithium-ion battery or Li-ion battery is a type of rechargeable battery. Li-ion batteries have a high energy density, no memory effect and low self-discharge. Spard has our own Li-ion battery: 10440 (AAA size), 14500 (AA size), 18650, 21700, 26650 etc. Also, we cooperate with famous brands cells, such as Samsung SDI, LG Chem,  etc.

18650 battery pack is a typical cylindrical battery pack. Spard manufactures not only 18650 single cells but also 18650 battery packs, such as 18650 2S, 12V pack, 18V battery, 48V 18650 pack, according to customer’s specific demands. Our factory is certificated with ISO 9001, and batteries with UL, IEC62133, CB, KC, UN 38.3 and MSDS.

Spard Lithium Ion Battery Pack

Typical Applications

Electric Bicycles

Li-ion battery (18650 or 21700 battery pack) is the most popular and optimal type of battery for an e-bike today. Spard Li-Ion battery has the best combination of total weight and capacity. The specific capacity is the highest of all existing types. Also, Spard has its own BMS R&D team, which can customize BMS with ISO13849 certified according to the needs of customers. 

Electric Scooter Battery

Lithium Ion batteries are the most commonly used batteries in electric scooters nowadays. The reason why many electric scooters feature a Li-Ion battery is because of its high energy density. Energy density is the among of energy that a battery can store depending on their weight. Spard Li-Ion batteries are also known for their longevity as they can maintain their capacity through many charging cycles.

Cordless Tools

Rechargeable lithium-ion (Li-ion) batteries have replaced previous generations of nickel-cadmium (NiCad) and nickel-metal hydride (NiMH) batteries as the primary battery for cordless tools. The Spard lithium-ion battery makes the machine lighter and easier to use, while longer runtime and faster charging help users be more productive without having to worry about “memory effects”.

Electric Motorcycle Battery

The light weight and long range of Spard electric motorcycle batteries make electric motorcycle performance stand out. Spard motorcycle batteries also yield a long service life and storage capacity. Lasts longer than comparable motorcycle batteries, meaning annual battery replacements are a thing of the past. The quality of motorcycle batteries is especially important given that motorcycles are often wintered in garages and quickly put back into service in the spring. To help you make the right decision from the start, we can support you in the custom development of high-performance lithium ion batteries for motorcycles.

Select Lithium Ion Single cell

There are many types of lithium-ion cells. Each type has its own special performances, and each application needs to choose the appropriate cell type first. No one type is suitable for all applications. For example, power tool batteries require high-rate discharge; 3C digital products require high energy density, etc.

In addition to the performance selection of the battery cell, it is also necessary to select a battery cell of an appropriate size according to the maximum battery space that each application can provide.

Here we list two types of Li-ion cells commonly used, general model and high rate discharge. If you have other performance or size requirements, feel free to contact Spard, we will provide you with more choices, and even customize the corresponding cells for you.

General Li-Ion Cells

General Li-Ion Model

Voltage (V)

Capacity (mAh)

Diameter (±0.3mm)

Height (±1mm)

Weight (g)

YT14250

3.7

250

14.0

25.0

10

YT10440

3.7

320

10.0

44.5

12

YT14430

3.7

600

14.0

43.3

12

YT16340

3.7

650

16.7

34.0

19

YT14500

3.7

750

14.0

50.0

19

YT17500

3.7

1200

17.0

50.0

28

YT18500

3.7

1400

18.0

50.0

33

YT18650

3.7

2000

18.0

65.0

48

YT18650

3.7

2200

18.0

65.0

50

YT18650

3.7

2600

18.0

65.0

52

YT21700

3.7

4500

22.0

71.5

70

YT26650

3.7

5000

26.5

66.5

94

YT32650

3.7

6500

32.5

66.5

132

High Rate Li-Ion Cells

High Rate Li-Ion Model

Voltage (V)

Capacity (mAh)

Diameter (±0.3mm)

Height (±1mm)

Weight (g)

Continuous Discharge Rate

Peak Discharge Rate

YT18650P1

3.7

2000

18.0

65.0

54

10C

20C

YT18650P2

3.7

2000

18.0

65.0

54

5C

10C

YT18650P3

3.7

2200

18.0

65.0

54

10C

20C

YT18650P4

3.7

2500

18.0

65.0

54

12C

25C

Battery Management System

Battery Management System (BMS) is mainly an integrated circuit board that protects lithium batteries because the material of the lithium battery itself determines that it cannot be overcharged, over-discharged, over-current, short-circuited and ultra-high temperature charging and discharging.

The three basic functions of BMS are short-circuit protection, overcharge protection and over-discharge protection. The optional functions could be balance function, communication function etc. Spard has hardware and software BMS for choice. The common BMS models are as below. Feel free to contact us if any other requirements.

Hardware BMS

Hardware BMS Model

Over Charge Voltage

Over Discharge Voltage

Continuous Working Current

Peak Working Current

Size

PW-318B-4 (1S)

4.2V

2.8V

2A

3-4A

4.5*23.5*3mm

PW-625D+PH (2S)

4.25V

2.5V

7A

13-20A

17*12*3mm

PW-4SP-4002-3S-15A

4.25V

2.7V

3A

80-100A

44*12.6*5mm

PW-5S-6034

4.25V

2.7V

20-30A

80A 1S

60*34*5mm

PW-6S-7060

4.25V

2.7V

30-50A

80A 1S

60*65*5mm

PW-7SK-ZY

4.25V

2.7V

25A

80A 1S

70*65*6mm

PW-10S-30176

4.25V

2.7V

20A

80A 1S

70*43*6mm

PW-13S-367009QFK

4.25V

2.7V

25A

80A 1S

63*34*15mm

PW-16S-120A

4.25V

2.5V

120A

200-400A

204*120*10mm

Software BMS

Software BMS Model

Over Charge Voltage

Over Discharge Voltage

Continuous Working Current

Peak Working Current

Size

Communication Mode

PW-13S-CAN-10S

3.65-4.3V

2.0-3.0V

20A

40-250A

70*43*18mm

CANBUS

PW-13S-CAN-13S

3.65-4.3V

2.0-3.0V

20A

40-250A

70*43*18mm

CANBUS

PW-10S-60341SE

4.25V

2.7V

15A

80A

60*34*15mm

UART

PW-13S-UART-40A

4.25V

2.7V

40A

100A

100*63*8mm

UART

Assemble Your Battery Packs

After selecting the correct single cell and suitable BMS, the assembly of the lithium ion battery pack also needs to consider some other details, such as charging wire & plug, discharging wire & plug, whether the battery pack needs color labels, whether the battery pack needs a housing, and whether the outer packaging is color carton, etc.

After the lithium ion battery pack is assembled, it needs to go through a sample test and a trial test before it can be officially finalized. Before placing a bulk order, we will assist you to obtain all necessary certificates as follows:

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+86 18022158226
info@spardbatt.com

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