This Game-Changing Upgrade Finally Cuts the Cord

Emily Brown · 2026-09-30

Let's talk about freedom. Real, untethered, go-anywhere freedom. If you've ever felt limited by the length of a power cord, you know the feeling. Well, for fans of the Motorbunny JACK, that limitation just got deleted. The handheld, app-controlled thrusting machine just got a serious upgrade that changes everything. It's not about adding more power or new features—it's about removing the single biggest restriction. ### What This Battery Kit Actually Does Imagine taking your favorite high-performance device anywhere. The bedroom, sure. But what about the living room? A hotel room while traveling? Somewhere more adventurous? That's the promise here. This isn't some weak, watered-down battery pack. The company promises no sacrifice in performance. The JACK still delivers its signature 65 to 210 adjustable strokes per minute, whether it's plugged into the wall or running on this new lithium-ion battery. Motorbunny founder Caleb Thompson put it simply: "We wanted to find a solution that allows our customers to enjoy JACK when they're away from an outlet or on a trip. Now it can be used literally anywhere, without losing the power and performance expected from Motorbunny." That's the key. It's cordless without being compromise-less. ### Breaking Down the Battery Specs You're probably wondering about the practical details. How long does it last? How fast does it charge? Let's get into it. - **Battery Type:** Lithium-ion (the same reliable tech in your laptop and phone) - **Battery Life:** Up to 13 hours on low to medium speed settings. That's a full day of potential play without needing a recharge. - **Recharge Time:** About 60 minutes with the included charger. That's faster than charging most smartphones. - **Compatibility:** Designed exclusively for the Motorbunny JACK device. - **Warranty:** Backed by a 120-day warranty for peace of mind. It's worth noting the JACK itself is sold separately. This is a dedicated upgrade kit for existing owners or those planning their purchase. The kit includes everything you need for the install: the battery, the charger, the specific JACK adapter, and even the Allen key and screws. ### Why This Is a Bigger Deal Than It Sounds On the surface, it's just a battery. But think about what the JACK already offered. Adjustable thrust depth. Versatile mounting options. App control via the Fluffer app for customized experiences and patterns. All those features were already impressive. But they were anchored—quite literally—to being near a wall outlet. This battery accessory unlocks them. It transforms the JACK from a powerful stationary device into a truly portable pleasure machine. It means spontaneity isn't limited by outlet placement. It means travel doesn't mean leaving your favorite tech behind. It's about the experience becoming seamless, without that moment of "wait, where's the closest plug?" For anyone who values flexibility and hates being tied down, this is the missing piece. It completes the picture of what a modern, high-end personal device should be: fully capable and completely wireless. The Motorbunny JACK Battery Upgrade Kit is available now. It represents a shift in thinking—where the best technology shouldn't just perform well, it should fit effortlessly into your life, wherever you are.