Sinowatt SW18650-25SP 20A 2500mAh Flat Top Battery - Genuine - Wholesale Discount


$ 2.99 $ 3.99 Save $ 1.00
5 reviews

SKU: SW18650-25SP

This is a CLEARANCE product. No additional quantity discounts will be given. All sales will be considered final. Quantities ordered will not count towards quantity discounts on other products.

A great alternative to the Samsung 25R

This is a high current 2500mAh 18650 battery that was benchmarked to the Samsung 25R and should perform similarly.  Sinowatt is not a rewrap company, these cells are manufactured by Sinowatt and are original grade A.  This cell is a wonderful choice for battery packs as well given that we can get matched lots.

Sinowatt SW18650-25SP 2500mah Specifications:

  • Size: 18650
  • Approximate Diameter: 18.45mm
  • Approximate Length: 65.2mm
  • Brand: Sinowatt
  • Manufacturer Rated Nominal Capacity: 2500mAh
  • Manufacturer Rated Minimum Capacity: 2500mAh
  • Manufacturer Rated Max Discharge Current: 20A
  • Nominal Voltage: 3.6V
  • Peak Voltage: 4.2V
  • Protected: NO
  • Style: Flat Top
  • Color: Gray
  • Origin: China
  • Datasheet:  Sinowatt SW18650-25SP Datasheet

Priced per battery, not per pair.

We don't sell bogus batteries. When buying from LiionWholesale, you can rest assured that we only work with top tier manufacturers to bring you the best, most reliable, trustworthy batteries that will perform above and beyond your expectations. And we test every shipment to ensure consistent quality.

Batteries are sold individually.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Manufacturer ratings: Please see more information regarding manufacturer ratings here.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Here are a few tips:

  • Never completely discharge batteries (usually below 2.5V for li-ion or 2.0V for LiFePO4, check datasheet)
  • Charge fully (usually to 4.2V for lithium ion or 3.6V for LiFePO4) before first use
  • Never charge batteries to more than their full charge voltage
  • Do not charge unattended
  • Do not store your li-ion batteries fully charged for an extended period of time (weeks or more)
  • If you must store your battery for a long time, only store in a case or individual box in a cool and dry place at approximately 3.5-3.7V for li-ion or 3.2V for LiFePO4
  • Use only high quality battery chargers
  • Do not expose to heat
  • Do not connect the positive contact to the negative contact without an appropriate load
  • Never exceed the battery's specifications
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for li-ion batteries
  • Always charge these batteries on and within fireproof material
  • Never leave rechargeable batteries in a recharging station unattended
  • Do not use any rechargeable battery or charger if any visible damage is present, or if known mishandling, accidental or otherwise, has occurred
  • Always store and transport rechargeable cells in a safe, non-conductive container (never keep a spare battery loose in a pocket, purse, etc. and always use protective cases)
  • Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)
  • If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside
  • If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

By purchasing this product, you agree that seller makes no warranties whatsoever with respect to the goods sold on this website, including any (a) warranty of merchantability or (b) warranty of fitness for a particular purpose, whether express or implied by law, course of dealing, course of performance, usage of trade or otherwise. Buyer acknolwledges that it has not relied upon any representation or warranty made by seller, or any other person on the seller's behalf. If purchasing for resale, buyer assumes all responsibility and agrees to forward all notifications and warnings to the purchaser.

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Filter Reviews:
Dewayne P.
United States United States

Sinowatt SW18650-25SP 20A 2500mAh Flat Top

Just what I was looking for at a very affordable price.

  • What device/application do you use this with? Vape applications
James P.
United States United States

Very good cells

I bought twenty two of these cells to rebuild battery packs. They were consistent size, quality, easy to solder/weld and good power output. The packs that I rebuilt now last longer than the original pack with original cells.

  • What device/application do you use this with? 20v DeWalt cordless battery packs
United States United States

Great company to deal with

Just as described on the website

  • What device/application do you use this with? E bike
United States United States

The battery is fine, and charged up beautifully

There isn't much to say about a battery. The price is the best around. This particular battery is not sold everywhere, so , this is my battery place to buy from.

  • What device/application do you use this with? The mini fans they sell
Ray B.
United States United States


Still waiting to receive them

  • What device/application do you use this with? Vape

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