When it comes to electric bikes, the battery is everything.
It determines how far you can ride, how consistently your bike performs, how safe it is to own and how well it will hold up over years of real-world use. Yet it’s also one of the most overlooked components when comparing ebikes.
At Ampd Bros, we’ve never believed in doing the bare minimum. That’s why we’ve made deliberate choices about what powers our bikes — choices that set us apart as a premier leader in electric bikes.
Why Most E-bike Batteries Are Still Behind
The majority of electric bikes on the market still rely on the 18650 lithium-ion battery cell. While this cell has been widely used for years, it’s no longer cutting edge.
The problem isn’t that 18650 cells don’t work — it’s that better technology now exists, and many brands haven’t evolved.
We knew our riders deserved more.
Enter the Samsung 21700 Battery Cell
Ampd Bros electric bikes are engineered around premium Samsung 21700 battery cells — a newer-generation cell trusted in high-performance applications where reliability, safety, and longevity matter.
So what makes the 21700 different?
46% Larger Capacity Per Cell
Compared to a traditional 18650 cell, the 21700 cell is approximately 46% larger by volume. That extra size allows each cell to store more energy, which translates directly to:
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Longer riding range
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Stronger, more consistent power delivery
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Less stress on the battery during use
Simply put, your bike goes further and performs better without constantly running the battery to its limits.
Higher Energy Density = Better Real-World Range
Energy density is one of the most important — and misunderstood — battery metrics.
Higher energy density means more usable power in the same physical space. With Samsung 21700 cells, Ampd Bros batteries deliver improved efficiency, allowing riders to enjoy longer rides without sacrificing weight balance or ride quality.
This is especially important for everyday riding — commutes, school runs, beach cruises, and family use — where consistency matters more than headline numbers.
Built to Last, Not Just Impress on Day One
Battery longevity isn’t about how a bike feels on its first ride — it’s about how it performs years down the track.
Samsung 21700 cells are designed with:
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Improved thermal management
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Greater resistance to heat stress
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Longer charge cycle life
This means less degradation over time and a battery that continues to deliver reliable performance well beyond the honeymoon phase.
UL Tested to the Highest Safety Standards
Battery safety is non-negotiable.
That’s why Ampd Bros batteries are now UL tested to the highest safety standards — one of the most globally recognised and respected certifications for electrical and battery safety.
UL testing evaluates:
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Thermal stability
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Electrical safety
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Short-circuit protection
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Overcharge and discharge behaviour
For riders and families, this means peace of mind. For Ampd Bros, it’s another step in our commitment to building electric bikes that are not only fun and powerful, but safe, dependable, and responsibly engineered.
Why We Go Beyond the Industry Standard
At Ampd Bros, we don’t design bikes to hit a price point — we design them to outlast, outperform, and earn trust over time.
From our frames and motors to our electronics and batteries, every component is selected with long-term ownership in mind. Choosing premium Samsung 21700 cells and investing in UL testing isn’t about ticking boxes — it’s about building bikes we’re proud to put our name on.
This approach is why families, commuters, and everyday riders continue to choose Ampd Bros as a trusted Australian electric bike brand.
The Bottom Line
If you’re comparing electric bikes, don’t stop at the headline specs or price tag.
Ask:
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What battery cells does it use?
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Are they independently safety tested?
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Will this battery still perform years from now?
Because what’s inside the battery is what powers your ride — and ultimately defines your ownership experience.
That’s the Ampd Bros difference.
