Home » Polly 52V/72V E-Bike Battery, 17.5Ah-30Ah Lithium Pack with 4A Charger & Lock

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Polly down tube E-bike battery main product view

Polly case lithium battery showing USB port and lock

4-pin base plate and mounting bracket for Polly battery

Included 4A fast charger for e-bike battery pack

Actual colors may differ slightly from photos due to lighting and screen settings.

Polly 52V/72V E-Bike Battery, 17.5Ah-30Ah Lithium Pack with 4A Charger & Lock

(6)

Regular price $491.73

In stock

Usually ships within 24 hours

Option

52V 20Ah battery 52V 25Ah battery 52V 30Ah battery 72V 20Ah Battery 48V 17.5Ah battery

Quantity

Ready to work out of the box!

Includes all key accessories and simple setup instructions for quick start!

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Expected arrival within 5–8 days

Choose 48V 17.5Ah 52V 20Ah 25Ah 30Ah 72V 20Ah for long rides for maximum distance and endurance. Both versions deliver stable, high-current output for demanding motors and terrains.

Advanced BMS Protection:
Built-in 50A Battery Management System (BMS) safeguards against overcharge, overdischarge, overcurrent, overvoltage, short-circuit, and overheating — keeping your battery safe and long-lasting.
Durable & Weather-Resistant Design:
The Polly-style curved case protects internal cells from vibration and light rain (avoid prolonged rain exposure). Perfect for mountain, city, folding, and snow e-bikes.
Smart & Secure Setup:
Includes 4-pin base plate, lock and keys for anti-theft security, and XT60 discharge connectors for reliable power transfer.
Fast 4A Charging & USB Port:
Equipped with a 4A smart charger for faster charging times and a USB port to charge small devices while you ride

Customer Reviews

Based on 6 reviews

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17%

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Eleanora Collins

Fast delivery and excellent battery! Built with good materials, it fits my bike perfectly, and the capacity is exactly as advertised. Tested on my 500W city bike, it works flawlessly. Nothing to complain about, excellent seller.

Bettina Strosin

Excellent battery. It exudes quality, no need to specify that. Delivered VERY QUICKLY by the carrier.

Erin Windler

Excellent product, just as described. I just received it, and although i haven't used it yet, it looks really high quality. Delivery was super fast, it only took 10 days to arrive. Communication with the seller was very smooth. I 100% recommend it.

Louie Ankunding

I ordered a delivery, and the shipping was really fast. After testing the battery, 30ah is enough! The samsung battery has been installed, as shown in the picture. I'm really happy that this device works properly! The journey was long. I'm very satisfied with both the seller and the battery. The seller really cares about their reputation and quality, that's it! Overall, i recommend this company!