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  • Product Name: RC high drain battery pack
  • Subtitle:
  • E&J manufactures high quality, high performance custom lithium polymer battery packs and assemblies. Using advanced mechanical and electronic design tools, our expert battery design team will optimize the manufacturability, safety, and reliability of your custom battery packs, giving you the most dependable and cost effective lithium polymer battery pack solution for your needs.

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ADVANTAGES


(1) Higher discharge rate for more powerful devices;
(2) High energy density (Max. of 200Wh/kg);
(3) Flat discharge curve with high MPV;
(4) High safety and long cycle life;
(5) Wide operating temp. (-20°Cto 60°C);
(6) Low IR;
(7) Green;



APPLICATION


This series are widely used in R/C helicopter,R/C boat,racing car,E-Bike,power tool,Military power,Aviation model and so on.



CLASSIC CASE


Lithium polymer battery packs for RC Helicopter                                                                                    


Lithium Polymer battery is currently considered the best electric power source available for use in electric RChelicopter. The reason for this is that lithium battery packs are significantly much lighter than NiMH or NiCD battery packs, and it has higher capacity for the same dimension. Over the seven years they have worked their way into the hobby market, and in addition to being used in electric RC helicopter kits they are also common in RC boats, cars, and airplanes. Their lower weight and higher capacity make them good ideal for long flight times, while also providing more power.



 
Lithium polymer battery packs 2S1P, 7.4V, 600mAh, 40C



(1) Utilization of top quality cells

(2) Custom designed, molded plastic enclosures
(3) Standard pack design or SMBus solutions
(4) High volume or low quantity production capabilities

(5) Testing and cycling services



CUSTOM LI-POLYMER BATTERY PACKS


Lithium-ion-polymer batteries differ from lithium-ion batteries only in construction—it is not a unique and different chemistry. Li-polymer can be created in an array of chemistries, the most widely used of which is Li-cobalt. The difference in construction over conventional li-ion cells allows for lower cost, safer operation, and flexible packaging options; cells as thin as a credit card are possible. The combination of these factors makes custom lithium polymer battery packs and battery assemblies an increasingly popular choice for a wide range of applications.

Cell voltage: 3.2 – 3.7V (nominal)
Capacity: 500mAh to 3000mAh
Energy by volume: 250 Wh/L
Energy by weight: 120 Wh/kg
Cycle life: 500+ cycles
Self discharge rate: approx. N/A
Operating temperature range: -20°C to 60°C
Preferred charge method: constant voltage/constant current



APPLICATION


1) Telecommunication: Cellular phone, Web phone, Interphone, Bluetooth earphone
2) Portable office devices: Notebook, PDA, Portable electrograph, Portable printer
3) Video devices: GPS, Digital camera, Camcorder, Portable DVD, Portable television, MP3, MP4, Speaker
4) Portable exchange devices: POS, Handy, Fingerprint machine, Portable stock machine.
5) Illuminate devices: miner lamp, searchlight
6) Others: toys, models
See some of E&J Li-Polymer battery packs:
  Specification:
Model: Li-Polymer 1300mAh 22.2V 40C
Cell Model:EJ723462 1300mAh
Assembled:6S1P
Voltage(V): 22.2
Capacity(mAh): 1300
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 40
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Production Impendance(mΩ):≤38.0
Size(mm):72*35*45(L*W*H) Max
Weight (g):≤220.0




              Specification:
Model: Li-Polymer 5000mAh 22.2V 50C
Cell Model:EJ9043128 5000mAh
Assembled:6S1P
Voltage(V): 22.2
Capacity(mAh): 5000
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 50
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Production Impendance(mΩ):≤18.0
Size(mm):140*45*57(L*W*H) Max
Weight (g):≤730.0 


Specification:
Model: Li-Polymer 1800mAh 11.1V 25C
Assembled:3S1P
Voltage(V):11.1
Capacity(mAh): 1800
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 25
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Size(mm):7.2*35*102(L*W*H)(each)
Weight (g):≤200.0
Optional Plug:Mini Tamiya Female


Specification:
Model: Li-Polymer 1800mAh 7.4V 25C
Assembled:2S1P
Voltage(V):7.4
Capacity(mAh): 1800
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 25
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Size(mm):7.2*35*102(L*W*H)(each)
Weight (g):≤130.0
Optional Plug:Mini Tamiya Female


Specification:
Model: Li-Polymer 21000mAh 11.1V 25C
Assembled:6S1P
Voltage(V):11.1
Capacity(mAh): 21000
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 25
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Size(mm):50.6*98*230(L*W*H) Max
Weight (g):≤2400.0
Optional Plug:AS150 (+), XT150(-)



 
Specification:
Model: Li-Polymer 5000mAh 22.2V 25C
Assembled:6S1P
Voltage(V):22.2
Capacity(mAh):5000
Maximum charging current(C): 2
Standard Discharging Current (C): 1 
Max.work Current  (C): 25
Ending Voltage of discharge(V):18
Charge Ending Voltage (V):25.2±0.18
Charge temperature range (°C): 0 ~ 45
Discharge temperature range (°C): -20 ~ 60
Size(mm):62*44*136(L*W*H) 
Weight (g):≤780.0
Optional Plug:XT60, EC5, T plug, Golden plug 4.0mm


High power Li-Polymer Battery Cells

Model

Nominal VoltageV

Nominal  Capacity

 (mAh)

Dimensions

Approx    Weight
(g)

Max. Discharge Current

Thickness
(mm)

Width
(mm)

Length
(mm)

Continuous

Burst(3s)

EJ653048P15

3.7

900

6.5

30

48

18.5

15C(12.75A)

25C(21.25A)

EJ582096P15

3.7

900

5.5

20

96

19

15C(12.75A)

25C(21.25A)

EJ5820120P15

3.7

1150

5.5

20

120

27.5

15C(16.5A)

25C(27.5A)

EJ603562P15

3.7

1350

6

35

62

29

15C(19.5A)

25C(32.5A)

EJ503496P15

3.7

1550

5.2

34

96

37

15C(22.5A)

25C(37.5A)

EJ583496P15

3.7

1850

5.8

34

96

41

15C(21.6A)

25C(36.0A)

EJ653496P15

3.7

2250

6.5

34

96

45.5

15C(33.0A)

25C(55.0A)

EJ683048P20

3.7

900

6.8

30

48

19

20C(18.0A)

40C(36.0A)

EJ653562P20

3.7

1350

6.5

34

65

30

20C(26.0A)

40C(52.0A)

EJ553496P20

3.7

1650

5.5

34

96

37

20C(32.0A)

40C(64.0A)

EJ603496P20

3.7

1860

6

34

96

43

20C(36.0A)

40C(72.0A)

EJ653496P20

3.7

2050

6.5

34

96

46

20C(40.0A)

40C(80.0A)

EJ703496P20

3.7

2250

7

34

96

51

20C(44.0A)

40C(88.0A)

EJ5243126P20

3.7

2650

5

43

125

57

20C(52.0A)

40C(104.0A)

EJ703048P25

3.7

900

7

30

48

20.5

25C(21.25A)

50C(42.5A)

EJ653562P25

3.7

1350

6.7

35

62

32

25C(32.5A)

50C(65.0A)

EJ653496P25

3.7

1850

6.5

34

96

44

25C(45.0A)

50C(90.0A)

EJ753496P25

3.7

2250

7.5

34

96

53

25C(55.0A)

50C(110.0A)

EJ5243126P25

3.7

2650

5

43

125

59

25C(62.5A)

50C(130.0A)

EJ5543126P25

3.7

3050

5.5

43

125

62

25C(75.0A)

50C(150.0A)

EJ5643126P25

3.7

3300

5.5

43

125

65

25C(81.25A)

50C(162.5A)

EJ7043126P25

3.7

3400

6.8

43

125

79

25C(82.5A)

50C(165.0A)

EJ7843126P25

3.7

3800

7.8

43

125

89

25C(92.5A)

50C(185.0A)

EJ8043126P25

3.7

4200

8.2

43

125

95

25C(100.0A)

50C(200.0A)

EJ7544150P25

3.7

4700

8

43

150

110

25C(112.5A)

50C(225.0A)

EJ8544150P25

3.7

5200

8.8

43

150

120

25C(125.0A)

50C(250.0A)

EJ7748175P25

3.7

6200

7.2

48

175

144

25C(150.0A)

50C(300.0A)

EJ803496P30

3.7

2250

8

34

96

57

30C(66.0A)

60C(132.0A)

EJ5543126P30

3.7

2650

5.3

43

125

66

30C(78.0A)

60C(156.0A)

EJ5643126P30

3.7

3050

5.4

43

125

68

30C(90.0A)

60C(180.0A)

EJ7543126P30

3.7

3400

7.6

43

125

88

30C(99.0A)

60C(217.8A)

EJ8043126P30

3.7

4100

8.8

43

125

101

30C(120.0A)

60C(240.0A)

EJ8044150P30

3.7

4600

8.5

43

150

114

30C(135.0A)

60C(270.0A)

EJ9044150P30

3.7

5200

9.5

43

150

126

30C(150.0A)

60C(300.0A)

EJ5543126P40

3.7

2650

5.8

43

125

70

40C(104.0A)

80C(208.0A)

EJ8043126P40

3.7

3400

8.3

43

125

91

40C(132.0A)

80C(264.0A)

EJ9543126P40

3.7

4100

9.8

43

125

110

40C(160.0A)

80C(320.0A)

EJ7048175P40

3.7

5200

7

48

175

133

40C(200.0A)

80C(400.0A)


Discharge current C rating describes how quickly a battery can be discharged. A 3000mAh Lithium polymer battery with C rating of 1C continuous would mean it should not be discharged any faster than 3000mA (3A), which would take one hour. A 2000mAh pack rated for 5C continuous would be able to discharge at 5 times its capacity (5 x 3000mA = 15000mA or 15A) at which rate it would discharge in 1/5th of an hour. Using a pack with a higher C rating than you require will leave some room for safety, and extend the life of your lithium polymer battery.
Continuous Current
 If you know how much continuous current will be drawn and the capacity of the pack you want to use, you can easily determine what C rating you require. If you are drawing 5A from a 2000mAh pack, simply take the current and divide by the capacity: 5A = 5000mA, 5000mA / 2000mAh = 2.5C.
Burst Current
Lithium polymer battery is also given a C rating in terms of burst, which is how quickly the battery is able to discharge for a short time. A burst rating of 10C would mean a 3000mAh battery could supply 10 x 3000mA = 30000mA or 30A for a few seconds.


To select the Best lithium polymer battery for your RC helicopter
To select a battery for your RC helicopter, you first need to know what voltage you require and how much current you will be drawing continuously. If the motor in your RC helicopter is rated to work with 14.8V, you would need a 4 cell battery. If you need to draw 10A, and you would like your RC helicopter to have a 10 minute (1/6th of an hour = 6C) flight, you would need a battery with 10A / 6 = 1.7A = 1700mAh. This means you would need to put a 3s 1700mAh battery with a C rating of 6 or higher in your RC helicopter.

Always Remember Lithium Polymer Safety Instructions
■Remove lithium polymer battery pack from your RC helicopter before charging.
■ Only use chargers designed to work properly with lithium polymer batteries.
■Always place your lithium polymer battery on a fire-proof surface while charging.
■Never leave your battery unattended while it is charging.
■Never charge lithium polymer battery if it is below 3.0V per cell.
■Never charge lithium polymer battery that is puffed up, or damaged in any way.