Sinowatt 30SP 3000mAh 18650 High drain cell

The Sinowatt 30SP 3000mAh 18650 High Drain Cell are the perfect power solution for all your battery pack needs! These high-quality batteries are manufactured by Sinowatt, a leading battery technology company based in Shenzhen, China. With their own state-of-the-art manufacturing plant and a team of dedicated researchers and developers, Sinowatt is at the forefront of battery technology, consistently producing innovative and reliable products.

These Sinowatt 30SP batteries are a top-performing cell, delivering the same high-level performance as the popular Samsung 30Q. The Sinowatt 30SP batteries are Grade A cells and are not rebranded, ensuring that you receive a quality product that you can rely on.

One of the standout features of these batteries is their consistent State Of Charge (SoC) voltage, making them ideal for use in battery packs. With a capacity of 3000mAh and a maximum continuous discharge current of 15A, these batteries are perfect for a wide range of applications, including e-Bikes, e-scooters, solar wall packs, flashlights, vape mods, and other high-drain devices.



  • Model: 30SP INR18650 3000mah 15A
  • Size approx. Diameter 18.3 x Length 65mm
  • Positive Cap: Flat top
  • Nominal voltage: 3.70V
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.5V
  • Typical Capacity: 3000mAh (0.2C discharge)
  • Min capacity: 2900mAh (0.2C discharge)
  • Weight: Approx. 46.5g
  • Max Continuous Discharge Current: 15A
  • Max Discharge Current: 30A
  • Protected: UNPROTECTED 

External charger is recommended for optimal balanced charging, speed and safety.

Note: Batteries will only have test charge. Ensure batteries are fully charged to reach full capacity. Failure to do so may lead to long term cell issues.

This cell is unprotected and intended for use in protected battery packs. In order to operate safely it must have additional protection in the form of a protection circuit board or a Battery Management System. 

Usage & Charging

!!!!! IMPORTANT!!!!! These are immensely powerful batteries, and extreme care should be taken using them. Only use with brand name, quality chargers (like LiitoKala, Nitecore, XTAR) and equipment! Unfortunately, we cannot replace batteries that are damaged by non-compliant chargers or equipment. There are so many chargers on the market, we cannot possibly keep track of which ones will work with these batteries. You will have to contact the charger manufacturer to ensure it can charge these batteries without damaging them. Please ensure you only use these (or any other Lithium Ion) batteries with proper Lithium-Ion chargers and equipment. Lithium-Ion batteries can easily be damaged by charging them with too high current or exceeding the maximum rated current discharge. 

Use at your own risk. We do NOT accept any responsibly for damage, injury or death caused by improper use of these batteries!

  • Do not overcharge! Ensure the charger voltage does not exceed the batteries stated full charge voltage.
  • Do not over-discharge! Ensure the equipment you use do not draw more current than the batteries “Maximum Continuous Discharge Current”.
  • Do not leave batteries discharged for a long period! Leaving Li-Ion batteries in a discharged state can incur irreversible damage – creating a loss in capacity and a loss in cycles.
  • Do not short circuit your batteries! NEVER short circuit a 18650 (or more other) batteries! Short circuiting can cause a huge surge of current that will potentially burn out your battery, damage your equipment, and even cause serious injury to you!
  • Do not let your batteries touch each other or other metallic items! Keeping your batteries loose, such as in your pockets, is a serious way to have your batteries fail and seriously harm you. There are battery holders and covers to keep your batteries safe.
  • Do not dispose any battery in a fire! There are dangerous chemicals in batteries. If you try to burn your batteries, they will release dangerous fumes and will probably explode. Always dispose your old batteries to a battery recycling centre.

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