Pocket Rocket II 52v 8ah Samsung 40T Lithium ion E-Bike Battery

🚀 The Original Pocket Rocket

The eBike battery that put Bicycle Motor Works on the map. Built in the USA with premium materials and uncompromising transparency, the Pocket Rocket proves that big power can come in a small package—without the big price tag.

Don’t let its compact size fool you. This lightweight pack delivers 52V 8Ah of high-current performance thanks to 28 genuine Samsung 40T 21700 cells. Perfect for riders who want less weight on quick, punchy rides—or a reliable backup for longer adventures.

🔋 Key Features

• 52V = more power for 48V systems. Safe, simple, plug-and-play upgrade.

• 8Ah capacity = 416Wh of energy. More pedal assist = longer rides.

• Lightweight & compact: Under 5 lbs, just 4 × 6 × 3 inches.

• 14s2p configuration with 28 Samsung 40T cells.

• High-performance BMS: 45A continuous, 100A max, temp protected.

• No-spark safety: XT-90s main connector + XT60 charging port.

• Long life: 400–1000 charge cycles when properly cared for.

⚙️ Built for Performance & Safety

• Solid nickel strip connections, spot-welded to every cell.

• Tight cell frame design improves heat dissipation (prevents insulation trap).

• BMS balances cells after every full charge, preventing overcharge.

• Each cell tested before assembly.

This means your pack stays cooler, safer, and more efficient—ride after ride.

📦 Shipping

All BM Works battery packs ship in the order received. Please allow 5–10 business days for processing. Tracking will be provided once shipped.

⚠️ Important Safety Information

Lithium-ion batteries are powerful energy devices and should be handled with care:

• Always charge in a fire-safe area (some riders use a BBQ grill, ammo box, or metal container as a precaution).

• Never leave charging batteries unattended.

• Only use the approved lithium-ion charger—contact us if you’re unsure.

• Do not open, modify, or hard-wire the pack. Doing so voids all warranties.

• Do not use if the pack is damaged or wet. Dispose of safely through your local hazardous waste facility.

Improper use may result in fire, explosion, injury—or at the very least, a really bad day.

🔥 Compact. Powerful. Proven.
That’s why the Pocket Rocket remains a favorite for riders who want U.S.-made reliability in a lightweight, high-performance pack.

 Not sure? We're here to help you. Contact us today - 484-793-2541