Lithium Polymer Battery Pack

Lithium Ion has the highest power density of any rechargeable battery chemistry, especially for lithium polymer battery,  It is very light weight and offers cycle life more then 500,which makes it the perfect power solution for many new design personal electronics .

DNK has the capability to custom design a Lithium polymer battery pack to fit your product’s specific needs. From small single-cell packs to large battery packs, DNK can design safe and reliable solutions to meet your specifications.

DNK prides itself on using only the highest quality lipo cells to make Lithium polymer battery packs. Only battery cells with long track records of safety and reliability meet the DNK quality standard.

Because Lipo cells have such a high energy density, DNK takes the utmost care to ensure that all battery packes meet the highest safety standards and highest performance  prior to leaving our factory. See our UN38.3 Test Report and MSDS report for more information.

Please notice that all Lithium Ion battery packs are classified as Dangerous Goods. Please see our Dangerous Shipping page for more information and regulatory requirements.

Lipo Battery Packs

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FAQ

  • What is Lithium Polymer Battery?
  • Lithium Polymer Battery, (commonly short for  LiPo, LIP, Li-poly ), is a rechargeable lithium-ion battery using a polymer electrolyte instead of liquid electrolyte, which makes it less powerful when there is leak or explosion. LiPo cells are now widely used in tablets, mobile phones MP4 and other wireless devices.
  • Which is Better Lithium ion or Lithium Polymer Battery?
  • As far as end user is concerned, lithium polymer battery(LIP) is essentially much better then lithium-ion battery (LIB).

    LIP has higher energy density then LIB, what’s more LIP is much safer then LIB, LIB can easily make explosion when short cut or over charged etc, while LIP has no such problem, LIP will simply Expand and blow and no explosion for most of the time.

    For New devices like Bluetooth or some medical device that require unique design of shape, LIP can be of great value, there is curved batteries and super thin battery cells among LIP manufacturer.

  • What is a 3s 5s LiPo?
  • Fo battery pack that contain 3 or 5 cells connected in series, they are called 3s or 5s LiPo batteries. A 3S battery has 11.1 volts(some like to call it 12V), and a 5S battery has 18.5 volts. but we know a single cell capacity is limited, so people will use more cell to parallel and get more capacity(also call Ah)

    so 3s2p is 6 cell in total, suppose each cell 3.7v 2000mah a 3s2p pack is 11.1v 4000mah in total, plus extra PCBA size, so you can have a rough idea of what pack you will need

  • What does the 10C mean in Lipos? What is C rate anyway?
  • People use C Rate to define a discharge rate. Most Lipo batteries will say on its description something like “10C to 20C”. This means that 10C is the nominal discharge rate and 20C is the maximum discharge rate.

    It’s common to use mah to define battery capacity. A battery with a 2000 mAh capacity can deliver 2 Ampere ( usually short for 2000 mA/2A, 2A=2000 ma) for 1 hour. to make it more clear, it can also send power in 200 mA for 10 hours. The battery capacity, together with the LiPo battery’s discharge rate will define its maximum current output (Ampere, A).

    A 3S 2000 maH 10C LiPo pack will get you this: 2000 mAh x 10C = 20.000 mAh discharge rate 20.000 mAh / 1000 = 20 A constant discharge rate.So if your projects requires constant discharging rate higher then 20A, you will need to choose another battery pack, always check with the motor description or product description when you select the battery cells.

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Common used Lipo Battery Cell List

Model Capacity Min Voltage(V) Max Voltage(V) Width(mm) Height(mm) Thickness(mm)
425475 2000mah >3.85 4.2 54 75 4.2
435080 2000mah >3.85 4.2 50 80 4.3
435093 2000mah >3.85 4.2 50 93 4.3
436165 2000mah >3.85 4.2 61 65 4.4
446168 2000mah >3.85 4.2 61 68 4.5
455395 2000mah >3.85 4.2 53 95 4.5
457285 2000mah >3.85 4.2 72 85 4.7
475080 2000mah >3.85 4.2 50 80 5
504979 2000mah >3.85 4.2 49 79 5
505070 2000mah >3.85 4.2 50 70 5.2
505569 2000mah >3.85 4.2 55 69 5.2
523885 2000mah >3.85 4.2 38 85 5.2
524384 2000mah >3.85 4.2 43 84 5.2
524482 2000mah >3.85 4.2 44 82 5.2
584858 2000mah >3.85 4.2 48 58 5.8
604962 2000mah >3.85 4.2 49 62 6
605063 2000mah >3.85 4.2 50 63 6
655665 2000mah >3.85 4.2 56 65 6.5
684065 2000mah >3.85 4.2 40 65 6.8
703085 2000mah >3.85 4.2 30 85 7
704553 2000mah >3.85 4.2 45 53 7
724060 2000mah >3.85 4.2 40 60 7.2
724553 2000mah >3.85 4.2 45 53 7.2
724553 2000mah >3.85 4.2 45 53 7.2
853754 2000mah >3.85 4.2 37 54 8.5
853759 2000mah >3.85 4.2 37 59 8.5
902965 2000mah >3.85 4.2 29 65 9
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