Polly 48V 20Ah E-Bike Lithium-Ion Battery Kit with US 3A Charger
Upgrade or replace your e-bike battery with this Polly 48V 20Ah downtube lithium-ion battery kit.
This configuration uses 21700 5000mAh lithium-ion cells in a 13S4P configuration and includes a US standard 3A charger.
Key Features
• Battery type: Polly Downtube Lithium-Ion Battery
• Rated voltage: 48V
• Capacity: 20Ah
• Cell type: 21700 lithium-ion cells
• Cell capacity: 5000mAh
• Cell configuration: 13S4P
• BMS: 30A
• Battery dimensions: approximately 368 × 95 × 125mm
• Battery weight: approximately 5.1kg
• Charger: 3A
• Charger plug: US standard plug
• Suitable motor power: approximately 250W–1000W
• Removable downtube design
• Key lock
• Power switch
• Charging port
• Battery level indicator
• Battery mounting base
Battery Protection System
ery Protection SystemThe integrated BMS provides multiple protection functions:
• Overcharge protection
• Over-discharge protection
• Over-current protection
• Overvoltage protection
• Short-circuit protection
• Battery management protection
21700 5000mAh Cells
This 48V 20Ah battery uses 21700 5000mAh lithium-ion cells.
Cell Configuration:
• Cell size: 21700
• Cell capacity: 5000mAh
• Battery configuration: 13S4P
• Total rated capacity: 20Ah
The 21700 cell format provides high capacity in a compact battery configuration suitable for compatible electric bicycles and conversion systems.
Battery Dimensions
Approximate dimensions:
• Length: 368mm
• Width: 95mm
• Height: 125mm
• Weight: approximately 5.1kg
Please measure the available frame installation space before ordering.
US 3A Charger
This battery kit includes a US standard 3A charger.
Charger Specification:
• Suitable battery system: 48V lithium-ion
• Charging current: 3A
• Plug type: US Plug
• Standard full-charge voltage for a 48V 13S lithium-ion battery system: 54.6V
Please check the charger label and battery charging port before use.
Output Connector Options
Available battery output connector options may include:
• T Port
• Anderson 1
• XT60
• 3 Pin Port
• Anderson 2
• XT90
Please confirm your controller connector before ordering.
XT60 may be supplied as the default connector depending on the selected configuration.
Battery Case Features
• Removable Polly downtube battery case
• Key switch and safety lock
• Battery power indicator
• Charging port
• Power switch
• Battery base connection
• Easy removal for charging and storage
Installation
Basic installation:
1. Secure the battery mounting base to the bicycle frame.
2. Connect the battery base wiring to the compatible controller.
3. Slide the battery onto the mounting base.
4. Lock the battery with the supplied key.
5. Confirm all electrical connections.
6. Switch on the battery before use.
Professional installation is recommended if you are unfamiliar with e-bike electrical systems.
Package Includes
• 48V 20Ah Polly lithium-ion battery
• US standard 3A charger
• Keys
• Battery mounting base
• Battery output connection
Important Compatibility Notice
Before ordering, please confirm:
• Required battery voltage: 48V
• Required battery capacity: 20Ah
• Motor/controller voltage compatibility
• Battery dimensions: approximately 368 × 95 × 125mm
• Available bicycle frame installation space
• Required output connector
• Charging connector compatibility
• Suitable motor power requirement
Do not connect the battery to an incompatible voltage system.
Wholesale & OEM
Wholesale and bulk orders are welcome.
For OEM branding, customized connectors, packaging or bulk purchasing requirements, please contact us before ordering.