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Portable 400mAh Lithium Polymer Battery Pack 3.7V 502535 For GPS Lipo Battery

Unitech Energy System Limited
Unitech Energy System Limited
City: Shenzhen
Province/State: Guangdong
Country/Region: China
Tel: 86-755-23449331
Contact Person:
Mr Alex

Portable 400mAh Lithium Polymer Battery Pack 3.7V 502535 For GPS Lipo Battery

Brand Name : Unitech
Model Number : 502535 400mAh
Certification : UN38.3 MSDS CE RoHS
Place of Origin : China
MOQ : 1000pcs
Price : negotiable
Payment Terms : T/T, Western Union
Supply Ability : 100000pcs/Month
Delivery Time : 28 days
Packaging Details : One battery per box, 10KG per Carton safe package
Type : li-polymer battery
Qualtiy : High safe and stable
Application : GPS, bluetooth, digital devices and so on
Sample : available
Service : OEM ODM welcomed
Warranty : 12 months
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502535 400mAh Lithium Polymer Battery Pack 3.7V For GPS Lipo Battery

Lipo battery Specification:

Product Name502535 400mAh 3.7V lipo battery
Battery TypeRechargeable li-polymer battery
Power Wh:1.48Wh 
Accembly Composed Type1cell/ 1S1P 
Nominal Capacity400 mAh@0.2C discharge
Nominal Voltage3.7 V 
Charge Voltage4.2±0.12 V 
Discharge end Voltage3.0 V 
Standard charge Current200 mA@0.5C charge
Max. charge current400 mA@1C charge
Standard Discharge Current200 mA@0.5C discharge
Max. Discharge Current400 mA@1C discharge
Resistance<140 mΩ 
Cycle Life:Over 500 times 
Weight (Approx.)8 g 
Dimensions(T.W.L.)5.0*25*35 (mm) 
Charge Temperature0 ~ 45℃ 
Discharge Temperature-20 ~ 60℃ 
Storage Temperature-10~40℃Less than one month
10~30℃More than one month

PCB specification:

1input Voltageinput Voltage B+ to B--0.3V~+10V


Detection voltage4.30±0.05V
3Release voltage4.10±0.05V
4Detection delay time≤200ms

Over discharge

Detection voltage2.40±0.10V
6Release voltage3.00±0.10V
7Detection delay time≤100ms

Over discharge current

Over current2.0~6.0A
9delay time≤20ms
10Short Circuit protectionShort detection delay time≤50 uS
11Release ConditionsCut off load

Normal current consumption

Normal current consumption of PCM

Max 6.00uA
130V chargeallowed 0V chargeNO

Suggest working conditions

max continuous charge/discharge current

15suggest working temperature-20℃~60℃
16IR resistanceIR of PCM≤65.00 mΩ
17NTC resistanceNTC(20~30℃)/ NTC of PCM(20~30℃)/

PCM Size

The thickness of final PCMMAX:2.50mm
19The width of final PCM3.50±0.10mm

The length of final PCM

16.00±0.15 mm



  1. Nothing part deflection
  2. PCM will not crook
  3. The status of solder is all right

Settle for LTW Module appearance standard

Battery Quality:

1. Cells: A grade quality cells to make sure batteries in high and full capacity

2. Compose Type: Injection Technology to make battery more stable
3. Protection: Dual IC chips, anti-short circuit, anti-over charge, anti-over current, anti-overload protection


1) Environmental friendly
2) Low self-discharge
3) Low internal resistance
4) Long cycle life, chargeable up to 500 times

5) No memory effect

6) No fire, No explosion, No leakage

7) Very good and quick charge, capability can be charged to 90% within 10 min.

8) Thickness can be adjusted while width and height keep the same.

Main application:

Lithium polymer battery widely used for

1)MP3/MP4 player, Bluetooth, speakers, car GPS and all possible electronics products

2)Widely applied in Telecommunications, Audio and Video Devices, Information Devices...Etc.

Product Tags:

lithium polymer rechargeable battery


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