JP40 Aggressive Cycle Testing

Learn more about the ongoing 35a/6a load testing

JP40 Cycle Testing Explanation

Top Performers for Power Delivery

Latest Updates About Li-ion Cells

  • Molicel p42a vs Ampace JP40 Teardown Comparison

    Molicel p42a vs Ampace JP40 Teardown Comparison

    Check out the teardown video here:

    Molicel p42a vs Ampace JP40 Teardown Comparison

    Check out the teardown video here:

  • 21700 JP40 Updated Labeling

    21700 JP40 Updated Labeling

    We have rolled out our newly labeled cells, to improve clarity and be ideally sized as not to interfere with cell holders.

    21700 JP40 Updated Labeling

    We have rolled out our newly labeled cells, to improve clarity and be ideally sized as not to interfere with cell holders.

  • 18650-21700.com Origins

    18650-21700.com Origins

    Introduction Hi I'm Austin Marhold, otherwise known as WhoGene.  In 2024 I formalized 18650-21700.com in response to the new Li-ion cells becoming available.  Before that I had been doing cell sales...

    18650-21700.com Origins

    Introduction Hi I'm Austin Marhold, otherwise known as WhoGene.  In 2024 I formalized 18650-21700.com in response to the new Li-ion cells becoming available.  Before that I had been doing cell sales...

1 3

21700 Ampace JP40 Highlights

An awesome cell for cost effective power and energy delivery

Buy Individual JP40 cells

  • 140a Discharge (for 5 seconds)

    Enabled by game changing low IR.

    This means energy can flow out of the cell faster, with better transfer efficiency.

  • 60a (if temp limited)

    It can deliver 45a continuous without reaching 80C.

    At lower discharge rates, the heat losses are minimal.

  • 1500 Cycles at 12a

    After 2a charge and 12a discharge testing for 1500 cycles, there will be 80% capacity remaining.

Ampace JP40 Price Reduction

On orders in the US 130+ cells, you can get them for as low as $4.75 per cell including free shipping!

Buy Bulk JP40 cells

Ampace JP40 Performance Data

JP40 VS p42a vs p45b vs 50s
Step test:

18 amps 10 sec
17 amps 12 sec
16 amps 15 sec
15 amps 20 sec
14 amps 30 sec
13 amps 60 sec

JP40 Testing

JP40 Grading Results:

Data on 130 cells in chart format

JP40 Grading Results

Cost Competitive

Compare our pricing aginst the best cells on the market from manufacturers like Molicel and Samsung

Pricing Comparison

Anti-Counterfeiting

It's important to know the cell you have is the one you wanted.

That's why Ampace cells have this unique spiral shape on the bottom tab, and unique serial.

Ampace JP40 by Cost per Quantity

View all