THE NEW FORMULA THAT WAS BUILT FOR THE COLD.

2 days ago
4 min read

Meet the NEW Ampace JP50 Collection

The Ampace JP50 is built for riders who want a battery that stays confident when temperatures drop and demands rise. In cold weather, your battery doesn’t just “hold less energy”—it also has a harder time delivering power smoothly when your motor/controller asks for current.

That’s where the right formula matters.

Why JP50 belongs in a Winter-Ready lineup

A winter-capable pack needs to do three things well:

Hold voltage under load (less “bogging” when you accelerate or climb)
Deliver current safely (high-demand setups don’t play nice with weak packs)
Stay consistent in real riding conditions (stop-and-go, wind chill, long climbs)

The JP50 collection was selected to support those priorities—especially for riders who keep riding when most people store their bikes.

What you’ll feel on the road: steadier power delivery, more usable range in the cold (compared to typical cells), and less performance drop-off when you need the battery most.

Man riding through the snow, featuring the NEW winter-ready Ampace JP50 eBike Battery by Bicycle Motor Works

Why Bicycle Motor Works Builds Winter-Ready Batteries (Not Just “Batteries That Work in Winter”)

A lot of batteries can function in winter. A Winter-Ready battery is designed, built, and supported with cold weather as the reality—not an afterthought.

At Bicycle Motor Works, winter readiness comes down to three pillars:

1) The formula: cell choice is everything

The cell type inside the pack determines how your eBike behaves when it’s cold:

Cold weather increases resistance inside the cell, which can reduce power delivery
Voltage sag becomes more noticeable
Range becomes less predictable if the pack isn’t designed for real current demands

That’s why our Winter-Ready Collection focuses on performance-proven cells—including options like Ampace JP40, Reliance RS50, Molicel P45B/P50B, and now Ampace JP50—so riders can pick a chemistry that matches their riding style and winter conditions.

2) Production quality: winter exposes weak builds fast

Winter riding is hard on batteries:

More vibration from rough roads and frozen potholes
More moisture exposure (snow, slush, road spray)
More demand spikes (thicker air, heavier gear, slick surfaces, stop-and-go commuting)

That’s why build quality matters as much as the cell itself. A Winter-Ready battery must be assembled with durability and safety in mind—because winter is when shortcuts show up as problems.

3) Customer service: because winter problems need real answers

Here’s the honest truth: winter battery issues often look like “the pack is bad” when the real cause is temperature + storage + charging habits.

Great customer service matters because:

You need the right battery recommendation for your motor/controller setup
You need help interpreting what you’re seeing (normal winter behavior vs. a real issue)
You need support that doesn’t disappear after checkout

Bicycle Motor Works backs our packs with guidance—before, during, and after your purchase—so you ride safer and your battery lasts longer.

Winter eBike Battery Safety: The Habits That Protect Your Pack

If you only remember one thing: cold batteries should not be charged cold.Charging a lithium-ion battery that’s too cold can cause internal damage and reduce lifespan (and in worst cases, it can be unsafe).

Store and charge at room temperature

Do (its a must):

Bring the battery indoors after riding
Let it warm to room temperature before charging
Store your battery in a dry area where temperatures stay stable

Avoid:

Charging in a cold garage, shed, car, or on a porch
Plugging in immediately after a freezing ride
Leaving the battery outside overnight

Simple rule: If you wouldn’t want to sleep there, your battery shouldn’t either.

After-ride care: wipe down and dry your bike

Winter roads are tough on everything—especially electronics and metal components.

After each winter ride:

Wipe the frame and battery case with a dry cloth
Clean off road salt and slush (salt is brutal for corrosion)
Dry around connectors and battery mount areas
If your bike is wet, let it air dry indoors before storage

Protect your connectors and mount area

Keep the battery mount clean so the pack seats fully
Don’t force a connection if there’s ice/debris
If you see grime buildup, clean gently—never scrape aggressively near contacts

Ride smarter in winter conditions

Winter safety isn’t just about the battery:

Brake earlier and leave more stopping distance
Watch for black ice on bridges, painted lines, and shaded areas
Lower tire pressure slightly within safe limits for traction (check your tire specs)
Wear gloves that still let you operate controls confidently
Use lights—winter visibility is often worse than you think

Why Your Winter Battery Purchase Matters More Than Any Other Season

In warm weather, many batteries “feel fine.” In winter, the differences become obvious fast. Buying the right eBike battery isn’t just about voltage and amp-hours—it’s about: