Big Hailong 52V 21Ah lithium battery 52v 1000w ebike battery with bms 30A or 40A

1. This Hailong style battery can easily fits and mounts on most bike frames 2. Ebike Battery Mount mounted on bike's downtube  3. Convenient and quick mounting release to easily take your battery on and off your bike 4. Lockable and removable with two keys 5. LED light charge-level indicator 6. New On/Off Switch 

US stock free shipping 52v 13ah Hailong style Ebike Battery

48v 21Ah Lithium ion battery pack for 1000w electric bicycle

48V 13.6Ah downtube water bottle style ebike battery

 1. Your inquiry related to our products will be replied in 12 hours.
2. Experienced staffs to answer all your enquires in fluent English.
3. We make the OEM and ODM service for more than 5 years. And the Paypal accepted.
4. Protection of your sales area, ideas of design and all your private information.
5. No matter big order or small order , we will provide all the best quality , best service.
6. If our products have any problem that we caused, they will be sent free in the next order. 

52V 21Ah lithium battery 52V 20Ah Ebike battery

Never put batteries into fire or heat. keep batteries in a cool dry place.
Never reverse positive and negative terminals to use batteries.
Never disassemble or modify batteries.
Do not short circuit the (+) and (-) terminals with other metals
Do not store batteries with such objects Hair-pins, coins or screws.
Do not hit with a hammer, step on or throw batteries.
Do not solder batteries directly.
Do not penetrate batteries by nail or other tools.

Q1: Are you factory?
A1: Yes, our factory is in Shenzhen, china. Specializing in rechargeable batteries. Lithium ion batteries, lithium batteries and power batteries and chargers for more than 10 years.

Q2: Do your e-bike battery come with charger?
A2: 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.

Q3: Do your electric bike batteries come with BMS?
A3: Yes, Our batteries all with SEIKO IC BMS, with stable performance.Which can protect the battery avoid short circuit,Overcharged,Overdischarge and Overcurrent.

Q4:What is your delivery date?
A4: Electric Bike Battery will be sent out within 7 days after confirmed order,shipping will cost 3-15days,it depend on quantity and which battery you need.

Q5:How long is the battery expected to last?
The battery should have around 800-1200 recharge cycles, about 2-3 years.Its capacity diminishes over time, when it goes down to 75%, you should replace it.The more you use the bike, the better the battery retains its capacity, since it keeps the Lithium moving.

Q6: How to maintain the battery?
A: The battery should be stored in clean, dry, ventilated, dark environment when not using.keep it after full charge,recharge it every 3 months or 6 months.

Q7:What about after-sale service?
A7: We will offer you 1 year guarantee. If there are any problems, please inform us, we will offer you positive solutions.Besides,we also have office and warehouse in US/Germany,can give you better after-sale service.

Q8: Can you provide OEM and ODM service?
A8: Yes, We are a professional Electric Bike Battery manufacture with factory, which produce all kind of high quality Ebike lithium batteries as customers' requirements and designs, welcome to place OEM and ODM orders and visit our factory.

52V 21Ah lithium ion battery 52V 20Ah Ebike battery 48v 1000w hailong battery