best battery brand 3.7v lithium polymer battery 651730 330mah small toys MP3 MP4 GPS navigation mobile power 701,730
ID: 108467

best battery brand 3.7v lithium polymer battery 651730 330mah small toys MP3 MP4 GPS navigation mobile power 701,730

5.0 (4 votes)
Price: US $110.87 / piece
Discount Price:
US $ 105.82 / piece


18650 Rechargeable battery
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Model: 651730

Voltage: 3.7V

Capacity : 330MAH

Size : 17MM Length Width Thickness 6.5MM 30MM


One , MP3 lithium battery life

Like lithium batteries and cell phones , MP3 built-in lithium battery life is generally deep charge deep discharge is about 300-500 times ( GB ) , which is about a year or two after use , playing time will be significantly reduced , or even completely unable to boot using then you have to replace the battery before use. Almost all of the brand-name computers because no service , in order to reduce costs, which in the installed product using a B cell ( factory defective products , defective , grade product ) , battery performance may be three months after the general use of the straight-line drop a shorter lifetime .

Two , MP3 lithium Duration

Playing time and the battery capacity and the size of the machine \\\\\\\'s power consumption , the greater the more general screen power consumption , the battery is also larger . MP3 capacity lithium battery 1.2 -inch screen in the following general 150 - 300mAh, after a full charge in about 8 hours playback time capacity lithium battery , 1.5- 1.8 -inch screen MP3 is generally 300 - 1000mAh, 2.5 -inch screen MP4 battery capacity of about 1800mAh. hodge machine because no service, in order to reduce costs, when installed inside a battery with a B grade ( factory defective products , defective , grade product ) , generally lower capacity than a product about 20% , the playback time will be shorter .

Third, how to judge my camera battery problems ?

If your Bluetooth device has the following MP3 phenomenon , is scheduled to be a problem with the battery , replace :

1 , the use of more than one year has play ( standby ) time is significantly shorter ( about 3 hours ) , the battery capacity is reduced to life .

2 , can not boot , or power : battery internal short circuit or poor quality of the hair and blow up or resistance becomes larger , the battery fails .

3 , playback worse : battery internal resistance increases , the output voltage is too low .

4 , can not play : battery protection circuit ring or rings , battery failure .

Note : MP3 if the start is normal, and later found to have a fault , it is more than 90 % of the battery causes the chances for other electronic components smaller ring , while the battery is a consumable , uneven quality , and with charger the output voltage is generally higher , the pressure is not limited dedicated lithium (4.2V) function relies entirely on the battery line protection , easily damaged . MP3 valuable one because of reasons not to use a small battery is very bad mood !

Fourth, how do you know the machine \\\\\\\'s battery model ?

1, open the machine : To boldly open the machine , MP3 interior is very simple , do not worry it will damage the machine . Carefully check the machine to see whether the screw , there it can be opened with a small screwdriver , housing in general is not bonded or have snap buckle , and after a week with a knife along the seam can poke or scratch Alice opened carefully, generally will not be damaged shells , buttons and other attention .

2 , you will see after opening the battery if the battery is silver , then the lithium polymer battery , the outside is plastic film packaging , if other colors are steel or aluminum lithium battery , the skin is PVC plastic put , the more blue , but also black.

3, see Battery Type: Battery are sprayed with a general model ( in fact represented battery size ) , recorded under the above words can be, if not with a ruler about the long generous record.

Fifth, how to buy the required battery?

First disassemble the machine to see the battery ( will dismantle their own self- demolition , repair technicians will not find a split ) , most batteries are marked with the model , in fact, is the battery type high ( thick ) , width, length , there are models in Our table below for the model , if not on , you can contact the restaurant to go with . If you still with less , you can use a similar model , which is similar to a small point , for example, you are 552 030 , not in the table , the available 052,030 , but the height ( thickness ) small 0.5 , with a piece of thick paper 0.5 piece put up loaded up in the machine to prevent shaking, as the machine has a space , whereas a similar point can be found large . If the battery is not the model , or do not see , is simple, with a ruler to measure the length, width , height , and then from the table, according to the above method to find similar capacity size should not be considered able accompanied on the trip. Rather smaller , not super , because once big, not installed, freight could have checked more expensive than the battery itself . Another point is that the machine is not used for a small number of lithium battery , the voltage is not 3.7 (3.6) V may be 1.2V or 2.4V , you must contact the owner .

Sixth, replace the battery

The red line is the positive battery , black line is negative , the next original battery welding, is not marked "+ - " On some motherboards . Poles at best to be marked down before welding the new battery according to the original position welding on the positive and negative on it. If he did not engage in ferrochrome , the electric iron on the outside as long as there is a place ( Maintenance Department ) to help find the master point on OK.


1.100%Brand New battery

2.High quality and durable

3.Provides excellent continuous power sources to your device 4.High energy density, long life battery 5.This battery has an extra long life for all your battery powered devices



Shipping terms 

*2-100pcs----------Shipping by Swedish packets,about 45-55 days arrival.

*Above 100pcs---Shipping by UPS or Fedex,about 7 days arrivlal.




Payment way 









*Notices: No appearance scratch and no artificial damage.

*Six-months warranty for guarantee.

*Notices: Non-man-made damage for free cost of raw materials and artificial maintenance.




Why choose us 


1.We are factory and trading company since 2003, 12 years experience and professional.

2.Hot selling around the world,many customers prefect items excellent performance.

3.3 sales teams and 5 QC and after-service teams.Best to You.

4.Excellent quality,competitive prices.

5.Choose us because of your wisdom.

  • Package: Yes
  • Battery Capacity: 330mah
  • Compatible Brand: Lenovo
  • Model Number: 651730
  • Brand Name: Liter energy battery
  • Service: Shop Warranty
  • Battery Properties: original
  • Type: Li-polymer


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some location we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:

Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time(60 days not including 2-5 day processing) you can request a refund or a reshipment.

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If you do not want the product you’ve receive you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of CNTRONIC Consumer Electronics Retailer (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (60 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.



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If you would like to get a discounted price for your large purchase orders, fill in the required blanks along with your email address, the product Item ID # and/or the link of the item that you want to order, item quantity (minimum of 30 pieces), shipping country and payment method is required. We will contact you with a discounted price as soon as we receive your inquiry.

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