Name: Safe Shield™ Advanced External Battery (15 Ah)
Brand: Rad Power Bikes
SKU: 400-01532
Price: 449.0 USD
Availability: InStock

Safe Shield Advanced External Battery, a black ebike battery with key hole and charge indicator

a black safe shield battery on a blue ebike

a black ebike battery on a blue ebike against a gold background

Safe Shield™ Advanced External Battery (15 Ah)

$449 ~~$599~~

Ships within 7-10 business days

From safe to safer.

Rad has always equipped our electric bikes with top-tier batteries loaded with high-quality cells. Safe Shield Batteries take it one step further with thermal-resistant tech that helps prevent problems before they start — giving you and your family extra peace of mind.

Free shipping*

2-year warranty

*Shipping fees and restrictions may apply in Alaska and Hawaii, see checkout.

Comes standard on the RadWagon 5 and RadExpand 5 Plus
Compatible as an upgrade for the 2020 and later models that use an external battery including:

RadExpand 5
RadMini 4 High-Step
RadRover 5 High-Step
RadRunner 1, 2 & Plus
RadTrike
RadWagon 4
Not compatible on these 2020 models:

RadMini 2 Step-Thru
RadCity 3 Step-Thru
RadRover 1 Step-Thru
RadCity High-Step 4
RadCity Step-Thru 3
Not for use on non-Rad Power Bikes branded ebikes

When applied as an upgrade for a 14Ah battery, users will see range increase of ~7%
When applied as an upgrade on the RadTrike, users will see range increase of ~50%
When applied as an upgrade on the RadMission, users will see range increase of ~43%
Lockable and removable with the included key, each new battery pack comes with its own set of keys
Built-in charge level indicator
21-700 Samsung 50GB or LG M50LT cells
UL Certified to UL-2271
Additional Battery Charger can be purchased separately
Battery purchases are final sale. View our full return policy.

Battery securely attaches to the bike’s battery terminal and is locked into place with your ebike's included keys.
The external battery has three settings: locked to the bike and on, locked to the bike and off, or unlocked and removable.
Batteries come with a universal key that can be used to lock and unlock the battery to your ebike. Please note that universal keys are not unique to your ebike battery and may work with a variety of locks, including on other Rad ebikes. Universal keys do not offer the highest level of security compared to dedicated or unique key locks. We do not recommend leaving your battery affixed to your ebike in public unattended as it may pose a risk of battery theft.
For installation instructions, please reference the owner's manual that came with the bike.

Safe Shield™ Advanced External Battery (15 Ah)

Safe Shield Explained

Ebike batteries are made up of multiple battery cells. Each cell in the Safe Shield Battery is separated by a special heat-absorbing resin. If something goes wrong with one cell, the protective resin is designed to prevent a chain reaction.

Long story short, Safe Shield batteries are designed to stop a thermal runaway event before it happens.

“Ebike pioneer ups the ante with safer batteries.”

-The Manual

Rad Science

EV Tech. Ebike Ready.

The same high-grade lithium-ion cells that were once reserved for electric cars now power your ebike.

Next-Gen Safety

Stay ahead of the curve. Safe Shield Batteries are built to handle the evolving needs of today’s ebike riders.

First-of-Its-Kind

Enjoy industry-leading safety. No other ebike brand offers a battery built like this.

The Ultimate Stress Test

From nail punctures to rigorous durability trials, Safe Shield Batteries achieved zero cell fire propagation — something other ebike batteries on the market simply can’t claim.

FAQ

What does the Safe Shield Battery actually do?

It keeps you riding with confidence. Safe Shield batteries use thermal-resistant tech that stops thermal runaway at the source, preventing a single damaged cell from affecting the rest.

Why would I want this battery?

You’ll get added peace of mind and more range — all in a design certified to UL standards and built with the same high-grade cells used in electric cars.

Does this mean Rad’s old batteries were unsafe?

Not at all. Rad has always equipped our ebikes with top-tier batteries and name-brand cells tested to UL standards for ebike battery safety. Safe Shield simply goes further by adding an extra layer of protection.

Will it work with my older Rad ebike?

Yes. Safe Shield batteries are available in builds that match every Rad model, past or present. Just choose the version that matches your bike — semi-integrated or external — and you’ll be good to go.

Warning: Do not use the charger that came with any original non-Safe Shield batteries or any aftermarket/third party charger. You’ll need to charge your new battery with our updated charger.