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Silver Mi Band Small Lipo Battery , 330819 3.8V 50mAh Custom Made Lipo Batteries

Silver Mi Band Small Lipo Battery , 330819 3.8V 50mAh Custom Made Lipo Batteries

  • Silver Mi Band Small Lipo Battery , 330819 3.8V 50mAh Custom Made Lipo Batteries
Silver Mi Band Small Lipo Battery , 330819 3.8V 50mAh Custom Made Lipo Batteries
Product Details:
Place of Origin: Guangdong, China
Certification: MSDS , RoHs , CB , UN38.3
Model Number: 330819
Payment & Shipping Terms:
Minimum Order Quantity: 1000PCS
Price: 0.8-1.5USD/PCS
Packaging Details: Plastic trays, Carton
Delivery Time: 7-30 days
Payment Terms: T/T , Western Union , MoneyGram , Paypal, L/C
Supply Ability: 35000.00PCS/Day
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Detailed Product Description
Type: Custom Lithium Polymer Cell / Battery Model Number: 330819
Voltage: 3.8V Capacity: 50mAh
Color: Silver Samples: Below 5pcs Could Be Free
Warranty: 1 Year Port: Shenzhen Or Hongkong
High Light:

high voltage lithium ion battery


high voltage li ion battery


330819 Custom Lithium Polymer Battery 3.8V 50mAh with UN38.3 and CB Certified for Mi Band and Wearable Products


330819-50mAh Custom Li-ion Battery Specification


Model 330819 Charge Current 0.2CA / 0.5CA / 1.0CA






0~45°C , 45~85%RH

3.5*8.0*19.0mm(include tab glue)

-20°C ~60°C , 45~85%RH
Weight about 2g storage temperature
and humidity range
within a month



Max discharge 2.0C above three 



Over charge

protection voltage

4.2V+/- 0.025V /CELL within one year  23±5°C,


protection voltage

3.0V +/- 0.10V /CELL Packing Blister or as your requirement
Delivery 7-28 working days Supply
MOQ 1000pcs


330819-50mAh Custom Li-ion Battery Major Applications


Mi Band, Bluetooth Headset, Bluetooth Speakers , ...

About Packaging Detail


Standard export package with Inner Tray + Carton or Custom-made Package

About Battery Samples

  •  For small lithium polymer battery(capacity< 1000mAh), we can provide 5pcs free samples and buyers pay the shipping cost, for the model in our stock, we can send out within 5 days.
  •  Making the sample until you are satisfied with it.

About Lead Time and Shipping Methods

7~10 days for stock , 23 ~30 days for customized or modified batteriers 


  1.  Samples checking : sending by Express ( DHL / UPS / FEDEX/ TNT ,by air)
  2.  Bulk production : sending out by cargo shipping / air/freight / Express(DHL/UPS/FedEx/TNT),or we can accept other shipping terms according to your requirements.


Notice !!!


Don’t near the hot source and don’t under the sunshine.

  •  Don’t charge in the sealed container.
  •  No short circuit. It should be addition charge if you don’t use, and single charge per three months, to avoid irreversible sulfating. The battery should be changed when the battery jar broken or the electrolyte omitted, to avoid acid corrosion.
  •  Don’t store in the space of acid gas.
  •  You should be careful and regular check when use the battery. To avoid the battery don’t work. You should change the battery if the capacity is not full or has been damage, especially after one year using.
  •  Don’t put the battery in the fire, or it will explode.
  •  Please use cotton cloth to clean, if the battery is broken down and leak electrolyte. Please wash your skin when touch the electrolyte.
  •  Don’t clean the battery by using the organic solution. (e.g. petrol)


Inquiry now ! Thank you !

Contact Details

Contact Person: Miss. Hellen

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