3.7V 300mAh 501936 Lithium Polymer Battery

  • High energy density of lithium polymer battery Up to 300 Wh/L
  • 10% higher in battery capacity than our competitor
  • Enhanced Protection Board and Custom Wire available
  • Rigorous testing to ensure the quality of all lithium polymer batteries
  • Battery life cycle more than 500 cycles
  • MOQ 100 pcs with leading time only 5 days

3.7V 300mAh 501936 Lithium Polymer Battery

Lithium ion polymer (also known as ‘lipo’ or ‘lipoly’) batteries are thin, light and powerful. The output ranges from 4.2V when completely charged down to 3.0V(standard)or 2.75V.

All of our lipo batteries come with or without pre-attached any connector like JST,XH,SH, NTC functions optional, as well as necessary protection circuitry.

Cell Type: Lithium Polymer Battery
Voltage(V): 3.7V
Nominal Capacity(mAh):300mAh
Standard Charge Current: 0.2C
Standard Discharging Current: 0.2C
Max Discharge Current: 1C (not continuous)
Charge Temperature(℃): 0~55℃
Discharge Temperature(℃): -20~65 ℃
Storage Temperature(℃): -20~45 ℃
Impedance: <40mΩ
Weight: 4.5±1g
Lifetime: 500 cycles


Battery Constitution:




1 piece of cell


DNK Power Polymer Lithium Ion Cell


One piece of protection board



 Lead Wire






Dimension:  (Tolerance: ±0.2mm)

5.0mm max
19mm max
38mm max



battery drawing

Cable Length (Default): 100mm

(Notes: Battery with PCM will generally 2mm longer than Just bare cell)
Standard battery comes with PCM and wire, Bare cell can also be provided.



Battery Cell Specifications:

No Item Specification Remarks
1 Cell minimum capacity 300 mAh
2 Initial impedance ≤80 mΩ 1kHz AC Impedance
3 Nominal voltage 3.7 V






T 5.0mm Max Thickness
W 19mm Max Width
L 36mm Max Cell length (not include Tab sealant)
A 7±1 mm Distance of tab center
B 2.0±0.2 mm Tab width


Electrical Characteristics:


Test Method and Condition


Standard Charge

Charging the cell initially with constant current at 0.2C and then with constant voltage at 4.35V till charge current declines to 0.01C


Rated Capacity

The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.2C with 2.75V cut-off voltage after standard charge.



Cycle Life

A battery unit shall be repeated 100 charge/discharge cycles, charged at CC-CV 0.2Cto 4.35V , laying the battery 5min, discharged at 0.2C to2.75V end voltage, After 100 cycles, recording the discharging  capacity.

100 time of discharging capacities keep

500 time of discharging capacities keep



After the standard charging, storied the cells under the condition as No.5.4 for 28 days, then measured the capacity with 0.2C till 3.85V.

Residual capacity:>85%


Initial impedance of cell

Internal resistance measured at AC 1KHz after 50% charge.



Cell Voltage

As of shipment.



Temperature Characteristics

1. According to item 4.5, at 20±5℃.

2. Capacity comparison at each temperature, measured with constant discharge current 1C with 2.75V cut-off. Percentage as an index of the capacity compared with 100% at20℃.

-10℃: ≥60%

20℃: 100%

50℃: ≥85%



PCM Details:

Standarded PCM: protect the lipo battery from overcharging, over-discharging,short-circuit and reverse polarity.

Over Charge Protection
Over charge detection  voltage 4.25±0.05V
Over charge detection delay time 1.0±0.3S
Over charge release voltage 4.05±0.05V


Over Discharge Protection
Over discharge detection voltage 2.5±0.1V
Over discharge detection delay time 20±6.0mS
Over discharge release voltag 3.0±0.075V


Over Current Protection
Over current detection voltage 0.2±0.015V
Over current detection current  3.0~6.0A
Detection delay time 12±4.0mS
Release condition  Cut load


Short Circuit Protection
Detection condition Exterior short circuit
Detection delay time  230~500uS
Release condition Cut short circuit


Interior Resistance

Main loop electrify resistance


Current Consumption

Current consume in normal operation

4.0μA Type 8.0μA Max


Connector Types:

JST, Molex, Hirose etc



Similar Batteries:

more types.



Q: How do we place an sample order?
A: Please kindly send us your battery requirement
1 battery discharging current
2 battery capacity
3 battery dimension
4 potential bulk order quantity
and we will find the most suitable solution for you, you can then pay us by PayPal or Credit card.

Q: How would the batteries be shipped?
A: We ship via UPS, DHL, FedEx for urgent orders, and most of our clients would choose to ship by air and local Fedex or UPS to save cost .

Q: Can you make customized lipo battery?
A: Yes, we can custom lipo battery as per your design. Mainly like follows
1 Custom battery dimension
2 Custom battery capacity
3 Custom battery discharging current(up to 150C)
4 Custom battery PCM, like NTC or other features
5 Custom battery discharging temerature as lower as -60°C
6 Custom battery shape, like Curved Lipo Battery, Round Lipo Battery,Polygonal Lipo Battery, Triangle Lipo Battery, Rectangle Lipo Battery, Hexagon Lipo Battery ,C Shape Lipo Battery D Shape Lipo Battery

Q: What is your MOQ?
A: 100 PCS per SKU.

Q: What’s the delivery time?
A: The delivery time is 7-15 days after your payment.
Below is timeline for your refrencer

USA: 5-8 days
EU/UK: 7-10 days
AU/New Zealand: 5-8 days
Canada: 15days
Japan/Korea/Singapore/Malaysia: 3-4 days

Q: What is the lead time for mass production?
A: It depends on the actual situation: if with stock, the lead time will be 7~10 days.
If without stock, that will depend on your order quantity, usually within 15-30 days.

Q: Is there any warranty or after-sales service?
A: 15 months warranty against defective lipo batteries,starting from shipping date.

Q: Can your factory print our logo/brand on the product?
A: Yes, and we will do this free of charge.

Q: How do we make the payment?
A: We accept T/T, Western Union, PayPal, if you prefer other payment, please contact us.

There are no reviews yet.

Be the first to review “3.7V 300mAh 501936 Lithium Polymer Battery”

Your email address will not be published. Required fields are marked *


Questions and answers of the customers

There are no questions yet, be the first to ask something for this product.