Second Battery Kit for Cooler King 750S / ST – Extended Range Power Upgrade
Take your adventures further with this Second Battery Kit designed specifically for the Cooler King 750S / ST electric bike. Perfect for long rides, extended touring, or simply reducing range anxiety, this kit lets you add a second removable 15 Ah battery to your e-bike, significantly increasing your riding range and versatility.
What’s Included:
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High-capacity 15 Ah removable battery – matches the original battery for seamless performance and balanced power delivery.
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Lockable protective battery case – keeps your second battery secure and protected from the elements.
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All required cabling and connectors – designed to integrate cleanly with your Cooler King’s electrical system.
This kit is ideal for riders who want more range without compromising the bike’s original design.
Easy DIY Installation:
This is a DIY installation kit that most riders can fit in approximately 1–2 hours, depending on experience and mechanical confidence. Clear mounting and connection points make the process straightforward. However, if you’re unsure about fitment, electrical wiring, or bike modifications, we recommend having the kit installed by a qualified bike technician to ensure safety and optimal performance.
Why Add a Second Battery?
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Greater range – travel farther between charges for touring, commuting, or off-grid rides.
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Peace of mind – ideal for long days out without worrying about battery life.
Note: Compatibility is specific to the Cooler King 750S / ST e-bike. Always check that your bike’s controller and battery mounts are suitable for a second battery before installation.