Polly Down Tube Lithium Battery

Manufacturing standard and custom 48V 17.5ah/52V 19.2ah etc Polly lithium ion battery ebike battery with 40A BMS for 48v 250w-1500w motor.




36V 48V 52V

Rated Capacity

15A 17.5A 19.2A

Battery Type

LG4800mAh cells/ Sanyo 3500mAh cells/ Panasonic 3400mAh Cells li-ion Battery

Cycle Lifes

≥1000 times



Max.discharge current

30A 45A

Max.charge current

3A 5A

Max. Charge Voltage

54.6V 58.8V

Discharge cut-off voltage

36.4V 39.2V


2A Charger/ 3A Charger

Dimension & Weight

368*95*125mm 6.5kg/367*140*90mm 7kg /370*90*110mm 6kg


12 months - 24 months

Rechargeable Polly Downtube E-bike Battery 48V 17.5ah/52V 19.2ah with LG4800mAh Cell

EcoRunBattery's Polly Downtube Electric Bike Battery comes in 48V 17.5Ah/52V 19.2Ah with 40A BMS for 250w-1500w motor. Offering enhanced capacity for extended range and prolonged battery life, thanks to top-tier lithium-ion cells.
Outstanding Performance
Outstanding Performance
EcoRunBattery - Custom E-bike Battery Pack Manufacturer
Our e-bike batteries undergo rigorous testing to meet our high standards of quality and performance. We subject each battery to extensive aging tests, ensuring reliable and consistent performance. Trust our batteries to provide exceptional performance and reliability - guaranteed.
100% Thorough Aging Testing
100% Thorough Aging Testing
EcoRunBattery - Custom E-bike Battery Pack Manufacturer
Our Battery Management System (BMS) boasts advanced safety measures that defend against overcharging, over-discharging, short circuits, as well as temperature and cell balancing protection customized to suit your requirements.
Intelligent BMS Protection
Intelligent BMS Protection
EcoRunBattery - Custom E-bike Battery Pack Manufacturer
We offer diverse charging solutions, such as a standard 2A charger, a 5A rapid charger, or higher current options, customized to your e-bike battery capacity and different charging heads. This allows for quick charging, reducing downtime and maximizing your riding enjoyment.
Fast Charging Options
Fast Charging Options
EcoRunBattery - Custom E-bike Battery Pack Manufacturer
Safe and Reliable E-bike Battery Pack

We are here to help you make long lifespan, nice quality and competitive E-bike Battery Pack

A women riding on a electric bicycle with Polly lithium ion battery

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