36V Polly eBike Battery 36V 31.5Ah 28Ah 24.5Ah 18Ah 15Ah Long Range Bi - E Smart Way

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36V Polly eBike Battery 36V 31.5Ah 28Ah 24.5Ah 18Ah 15Ah Long Range Bicycle Batteries for 500W 350W 250W Bafang TSDZ2 Motor

Sale price $764.68 Regular price $823.88

36V Polly eBike Battery 36V 31.5Ah 28Ah 24.5Ah 18Ah 15Ah Long Range Bicycle Batteries for 500W 350W 250W Bafang TSDZ2 Motor


UPP “Polly Battery #A” “Polly Battery #2” “Polly Battery #3” Model have Same Length&Width, and the Installed Plate is Universal, only It’s Capacity is Different:

1) Factory Direct Store: We assemble all batteries in our own factory, never use fake or cheap cell pack sell at lowest price to attract buyers. In addtion, we have to scrimp on everything, assemble them as quickly/cheaply as possible. We don’t take chances when it comes to our batteries or your safety!

2) Official High Quality Cell Sources: We only source genuine A-grade genuine cells from the official sources.

3) Every Battery Made Cycle Test: Each pack is ran through a full charge and discharge before leaving our facility to make sure you are getting every amp hour you paid for.

The test include:

Short Circuit Safety Test  Overcharge Safety Test √ Crush Safety Test  Needing Safety Test  Extrusion Safety Test 

4) Best Oversea After-sale Service: We do all this and offer it at our usual low pricing, we don’t charge a premium for Safety and Reliability. We have a proven track record of offering great after-sales support and warranty repairs/replacements. We will not leave you stuck (18 Month warranty, with Support Centres in Germany&Belgium&USA&Canada&Australia).

Polly 36V Ebike Battery Specs:

  • 42V 2A or 42V 3A good quality chargers (very reliable in our experience).

  • We use A grade cells 2.5Ah and 3.5Ah.

  • Cycle Life estimated at 1000 cycles plus (1C discharge to 2.75V, 1C charge to 4.2V). Cycle life is extended by charging to 90%, limiting discharge to 90%

Capacity Specs for each Cell Type of the Polly 36V Ebike Battery:

  • Polly Battery#A:

  • 36V 15Ah: 540Wh in-built 50pcs Brand 3000mAh Cell

  • 36V 17.5Ah: 630Wh in built 50pcs Brand 3500mAh Cell

  • Polly Battery#2:

  • 36V 21Ah: 756Wh in-built 70pcs Brand 3000mAh Cell

  • 36V 24.5Ah: 882Wh in built 70pcs Brand 3500mAh Cell

  • Polly Battery#3:

  • 36V 28Ah: 810Wh in-built 80pcs Brand 3500mAh Cell

  • 36V 31.5Ah: 1134Wh in built 90pcs Brand 3500mAh Cell

Recommended Max Discharge Current for each Cell Type of the Polly 36V Ebike Battery:

  • Brand 3500mAh: 20A Continuous, 60A Max Burst Current

  • Brand 2500mAh: 20A Continuous, 60A Max Burst Current

Polly 36V Ebike Battery Weight and Dimensions:

  • Polly Battery#A Maximum dimensions: 90mm thick. 96mm tall, 368mm long, approximately 3.5kg

  • Polly Battery#2 Maximum dimensions: 90mm thick. 113mm tall, 368mm long,approximately 4.5kg

  • Polly Battery#3 Maximum dimensions: 90mm thick. 141mm tall, 368mm long,approximately 5.5kg

Charger Plugs and Discharge Connectors Optional

1. Charger Plug: US EU UK AU  plugs optional, will provide according to delivery country if without requested.
2. Discharge Connector: There are 7 kinds optional as below picture, will soldered with default female connector&extra male connector if without requested.
3. If you have any requirement about this, please leave message in your order.


1) We provide 18 month warranty for all electric bike batteries.
2) Any battery with quality problem within one month we can resend you a new one after provide your proof.
3) Any battery with quality problem within one year, we provide free repaired.
4) All our electric bicycle batteries with high quality cells and BMS, and they will be 100% tested before shipping.
Top brand lithium battery manufacturer in China, rest assured to buy.

We don't supply warranty service for the following situation:

1) The battery goes over the water.
2) The battery is broken by man-made.
3) The cells are burnt out after incorrect using.
4) Return the battery without reason.
5) Open a dispute without contacting us.


1) Our battery can fit most of motor kit, exclude(not only) these:B0SCH, SHIMANO, YAMAHA, Panasonic.
2) Please contact us If you can't confirm whether our battery can fit your motor.
3) If you have any problems please feel free to contact with us BEFORE you leave negative feedback or file a dispute.
4) Any problem is not a problem, as long as you contact us.
5) Your satisfaction and positive feedback is very important to us.
6) Please kindly leave us a positive feedback and 5 Stars if you are satisfied with our items and services.


Q: What type of this electric bike battery?
A:It is li ion battery,Chemical is Li(NiCoMn)O2.

Q: What is the difference between li ion battery,NI-MH battery and Lead acid battery?
A: E-bike Li-ion battery have longer cycle life,normal cycle life is 800-1000 times, and also with light weight,small size, No memory effect,Nontoxic, environmental friendly.

Q: What's temperature range of charge and discharge?
A:Charge Temperature: 0 to 45°C and Discharge Temperature: -20 to 65°C

Q: What kind of cells used on this electric bicycle battery?
A: Different capacity with different cells, we make the battery with original A grade Samsung,Panasonic,Sanyo,LG and high quality domestic cells,all can be customized as your requests.

Q: Do your e-bike battery come with charger?
A:All of our e-bike batteries come with charger.We have normal charger and fast charger.If you need fast charger please contact with us.

Q: Do your electric bike batteries come with BMS?
A:Yes, Our batteries all with SEIKO IC BMS, with stable performance.Which can protect the battery avoid short circuit,Overcharged,Over discharge and Over current.

Q: Can you provide OEM and ODM service?
A: Yes, We are a professional Electric Bike Battery manufacture with factory, which produce all kind of high quality E-bike lithium batteries as customers' requirements and designs, welcome to place OEM and ODM orders and visit our factory.

Lithium Battery Features

1) Longer battery life, the life expectancy is two times that of lead-acid batteries.
2) Rechargeable and no memory effect.
3) The weight is more lighter than other batteries.
4) Smaller dimensions and can be customized.
5) Safer and more environmentally friendly, No heavy metals and hazardous substances.
6) BMS built-in IC chip will prevent battery pack over charge, over discharge, over-current,over-heat, short circuit.


Do not immerse the battery in water or seawater, keep the battery stands by in a cool dry surrounding.
Does not use or leave the battery near a heat source as fire or heater.
Use the battery charger specifically for that purpose when recharging.
Do not reverse the position and negative terminals.
Do not connect the battery electrodes to an electrical outlet.
Do not discard the battery in fire or a heater.
Do not short-circuit the battery by directly connecting the positive and negative terminals with metal objects.
Do not transport or store the battery together with metal objects such as hairpins, necklaces, etc.
Do not strike, trample or throw the battery.
Do not directly solder the battery and pierce the battery with a nail or other sharp objects.

UnitPackPower batteries have insured to China Ping An Insurance, rest assured to buy.

The 36V Polly eBike Battery 36V 31.5Ah 28Ah 24.5Ah 18Ah 15Ah Long Range Bicycle Batteries for 500W 350W 250W Bafang TSDZ2 Motor is the yin, to your yang. You've found what you're looking for.

Inventory Last Updated: Jun 20, 2024