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3.7v Lithium Polymer Battery 2500mAh

100% of buyers enjoyed this product! 6 orders


Product model: SD505860
Product size:Max long 60x wide 58X thick 5mm
Electric core capacity: 2500mAh
Nominal voltage: 3.7V

The standard plug: XHR-2P 2.54 reverse (silver oriented, black red right left)
Charging current: standard charge: 0.2C; fast charge: 0.5C

Standard charging method: 0.2C CC (Heng Liu) charge to 4.25V, then CV (constant voltage 4.2V) charge till charge current is less than 0.05C

Maximum charge current: 0.5C
Continuous discharge current: 0.5C
Maximum discharge current: 1C
Discharge cut-off voltage: 2.75V
Discharge temperature: -10C~+60C
Charging time: 12hrs (standard); 3hrs (fast)
Charge and discharge times: more than 800 times

Self discharge: less than 400uA
Working current: 1.5A
Current limiting protection: 2~3A
Over charge limit: 4.2+/-0.05V
Over discharge limit pressure: 2.9+/-0.10V


  • In order to ensure the battery to maintain optimum energy level, store where it has about 20~35 C with low humidity, non corrosive gas conditions.
  • Long term storage will likely lead to a reduction in the capacity of the battery and battery pack, and the need for 1-3A charge/Discharge cycle to achieve maximum discharge capacity.
  • The battery should be charged and discharged once in three months.


  • Do not reverse charge, the battery should be connected according to polarity accurately, and can not be reversed.
  • Do not short circuit, otherwise it will result in permanent damage.
  • The battery can not be used conditions such as: deep cycle, extreme over charging and over discharge.
  • Store the battery in a cool, dry place. If a large number of batteries are stored or shipped, the batteries must be separated before use.
  • Avoid direct sunlight.
  • Do not the battery itself solder or put it near the solder iron.
  • If the battery produces strange noise, gives off high temperature, leaks and other abnormal situation, immediately stop using.
  • Do not puncture or put unto fire or try to disassemble the battery. It may blew up or produce harmful substances.
  • Don’t mix with old or half empty batteries, otherwise it will cause discharge.
  • Outer casing and outer jacket tube for removing the battery.
  • Don’t submerge in water.
  • It should be fully charged before use.
  • Charge using only appropriate chargers.
  • Provide appropriate ventilation upon usage, otherwise the battery may produce hydrogen, which may cause ignition or explosion.
  • Do not apply too much pressure, it may cause for the alkaline to leak and can damage the skin, eyes or clothes.
  • It should always be kept away from the children.
  • When the battery is not in use, it should be removed from the device (if possible).
  • Avoid touching when hot, allow it to cool down first before handling.
  • When pulling out the battery, hold the end and not the wire itself to avoid ripping it off.
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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 locations 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 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Mexico, Central America, South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 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. If you haven’t received tracking info within 5 days, please contact us.

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. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

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( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
If you received the wrong item you can request a refund or a reshipment.
If you do not want the product you’ve received 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 herozone online (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 (45 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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