This is a 1S 3.7V 500mAh 25C LiPo Battery from Eflite.

Specs

Connector Type: JST
Height: 0.30 in (7.5mm)
Maximum Continuous Current: 12.5A
Maximum Continuous Discharge: 25C
Voltage: 3.7V
Weight: 0.51 oz (14.5 g)
Length: 2.35 in (59.5mm)
Width: 0.75 in (19.0mm)

CAUTION

Fire hazard! Keep away from small children and animals

Safety Instructions

Use specific LiPo charger only.
DO NOT use a NiCd or NiMh charger.
Never charge batteries unattended.
Some LiPo chargers on the market may have technical deficiencies that may cause it to charge the LiPo batteries incorrectly or at an improper rate.
It is your responsibility solely to assure the charger you purchased works properly.
If at any time you witness a battery starting to balloon or swell up ,discontinue charging process immediately.
Disconnect the battery and observe it in a safe place for approximately 15 minutes.
Since delayed chemical reaction can occur, it is best to observe the batter as a safety precaution.
Wire lead shorts can cause fire!
If you accidentally short the wires, the battery must be placed in a safe area for observation for approximately 15 minutes, additionally, if a short occurs and contact is made with metal (such as a ring on your finger), severe injuries may occur due to the conductibility of electric current.
A battery can still ignite even after 10 minutes.
Charge in an isolated area, away from other flammable materials on a concrete surface outside of buildings.
Let the battery cool down to ambient temperature before charging.
Do not charge batteries packs in series, charge each battery pack individually.
Failure to do so may result in incorrect battery recognition and charging functions; overcharging may occur and fire may be the result.

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Save on Shipping

Items that are paid for on the same order do qualify for combined shipping. Shipping rates are based on the total weight and size of the package, and you can choose from any of the shipping options available. Orders that are shipped to PO Boxes, APO and military address, and outside of the Continental US will be switched to Parcel Post if FedEx is selected. Mark Twain Hobby reserves the right to modify or change the shipping method selected for an order. Missouri residents must pay sales tax on all items.
We also offer combined shipping for international customers when items are paid for together. Large and oversized items are excluded from the shipping discount.
Items paid for separately do not qualify for the combined shipping cost and will not be refunded.

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International Buyers

Import duties, taxes, and charges are NOT INCLUDED in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up, do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as "gifts", US and International government regulations prohibit such behavior.
We only accept PayPal as payment from International buyers.

International Average Delivery Times
First Class Mail: 2 to 4 Weeks
Priority Mail: 6 to 10 Business Days
Express Mail: 4 to 8 Business Days

These times are estimates only and can be delayed by customs.

NOTE: International First Class Mail is an economic way to ship all over the world, but is not very timely. The average delivery time for International First Class Mail is 2 to 4 weeks depending on how the package moves through customs and the postal system, but can take up to 45 days to arrive. If you need it faster, please choose International Express Mail or Priority Mail that has a average delivery time of 6 to 10 business days.

Returns

Returns are accepted within 30 days of the order for a full refund for new and unopened items only. Items that are opened or used are not returnable for a refund. Defective items are covered under manufacturers warranty and are handled directly through the manufacturer. For further information on warranty, please contact us and we will be happy to assist you. Any item that is returned as new but has been opened, used, or is in any other condition than received will be refused or refunded less return shipping and a restocking fee of up to 50%.

If you receive an item that was shipped incorrectly to you, please contact us so that we can fix for you. In most cases, we will be able to ship the correct item with a return label for the incorrect item to be returned to us at no cost to you. 

If your order is damaged in shipping, please contact us immediately so that we can start a claim. Do not open or use the item as that will void the claim and the order will not be able to be returned.