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1.Q:Can I refresh the battery?
A:
We strongly advise against "refreshing" the battery because the safety and optimum interaction with the Battery Management System cannot be guaranteed in this case. 

 

2.Q:What about the warranty?

A:We provide 1-2 year warranty for all electric bike batteries.

Any battery with quality problem in one month we can return the money after you provid the proof. After one month we can send BMS or cells to you for repair,or you can send it back to repair as well. All our electric bicycle batteries with high quality cells and BMS, and they will be 100% tested before shipping.

 

3.Q:What precautions should be taken for battery in winter?

A:A general rule is that cold weather reduces battery performance. That is why, in winter at below zero temperatures, it is advisable to wait until just before you set out before attaching to your eBike a battery that has been charged and stored at room temperature. If you have not used the eBike for quite a while in winter, the battery should be stored in an environment that is dry and cool at about 30% to 60% of its charge capacity.

 

4.Q:My motor is a 500w and original battery is a 36v 12ah. Can i upgrade the battery for more torque or more long distante?
A:
You must buy a 36v battery if that's what is on your bike. No, the battery voltage must match your speed controller voltage. If you put a battery on your bike with more voltage than your speed controller will handle you will kill the speed controller. To get more torque go up in voltage with a newer kit and higher motor wattage.

 

5.Q:Is the case waterproof/rain proof? 
A:
Battery Case is waterproof, but still don't suggest riding in rain . 

 

6.Q:What is the voltage of a fully charged battery? I have 54,5 volts. Is that OK? When the off switch shows 1,6 volts, why not zero?
A:
Theoretically, the fully charged voltage is 54.6V, a little error (±0.5V) is normal  .When turn off the switch  ,there is a little dummy voltage remaining in the components, that voltage is useless, it will not affect the use or short circuit .

 

  1. 7Q:How to calculate battery charging time?
    A:
    Battery charging time depend on your battery's capacity and the current of your  charger. For example: if your battery is 14Ah, your charger is 2A, the full  charging time need 14/2+1=8 hours.

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

 

  1. 9.Q:I live in Poland, how long can I receive the battery if I order from you?
    A:
    We have warehouse in USA, Germany, France, UK.
    For some batteries, we have inventory in Overseas warehouse,you can receive package within 3-7 days.We also could customized other battery that do not have inventory in Overseas warehouse, we ship from our factory in China.Shipping takes: 3-5 weeks.

 

10.Q:How to use lithium batteries safe?

A:The first temperature, lithium batteries are afraid of high temperatures.

The second largest current, for example, the 18650 battery is 3C discharge, your electric car is 8000W, and the battery used is lower than the discharge current of your electric car, which will cause the lithium battery to have too high temperature, too much current and shorter life. There will also be bulging scraps. If your electric car is very powerful and fast, it is recommended to choose 18650 batteries with more than 3C current. It is obviously very important to choose the right batteries!

The third is full-charge storage. The full charge of the ternary lithium battery is 4.35V. At present, the protection board on the market is 4.2V and the charging is cut off. Therefore, many people buy lithium batteries for electric vehicles and say that they have no nominal capacity. For this reason, it is generally best to store the lithium battery of an electric car for a long time, and it is best to charge 50% of the TV. For example, if you buy a new mobile phone, most of it is 50% of the battery power. If the battery is fully charged and stored for a long time, the capacity of the lithium battery will decrease. Except for lithium iron phosphate and lithium titanate, these two types can be stored at full power. It is also necessary to pay attention to choosing a better quality protection board. The biggest taboo of lithium batteries is overshoot and over-discharge, and ternary lithium can be discharged at one time. Scrap, overshoot must be scrapped.

 

  1. 11.Q:Which kind battery cell your battery use?

A:Different capacity with different cells, we make the battery with the original A grade high-quality Brand cells, such as Samsung/LG/Sanyo/Panasonic, etc. all can be customized as your requests.
 

  1. 12.Q:Why the ebike Li-ion battery needs a Battery Management System(BMS)?

A:This is mainly determined by the characteristics of lithium batteries.The disadvantages of lithium batteries are overcharge, over discharge, and short circuit.The function of the BMS is mainly to protect the rechargeable battery cells, maintain the safety and stability during the charging and discharging of the battery,Plays an important role in the performance of the entire battery circuit system.

 

13.Q:What services can we provide?

A:6-Years experience in Manufacturing Lithium Battery, Polymer Battery, Lifepo4 Battery, Battery Packs for Electric Bike,
Motorcycle, Power Tools. Oversea warehouse and Sales-office, located in US, GER, AU, Offer after-sales service and urgent samples

Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDP,DDU, Express Delivery;
Accepted Payment Currency:USD,EUR,HKD;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal,Western Union,Cash,Escrow;

Accepted OEM&ODM 
LanguageSpoken:English,Chinese,Spanish,German,French,Russian,Korean,Italian

 

14.Q:How long will be the delivery?

A:Normally sample usually delivery in 3-5 working days, bulk order 10-20 days, but could be change according to the quantity and other things.

 

15.Q:How should I charge the battery?
A:
To achieve the longest life from your battery it is best to charge the battery after each use or at least once daily if used every day. It should also be charged once every month if not used for a long period of time.

 

16.Q:Do I need to wait for the battery to run out before charging it ?
A:
No, this is not necessary as lithium-ion batteries do not suffer from the "memory effect",you can charge or discharge any time if you wish.

 

  1. 17.Q:Why li ion battery is better?

A:1.Cycle Life:  Have longer cycle life, Normally. Li-ion battery can reach 800-1000 cycles; LiFePO4 battery can reach 2000 cycles.
2. Self-discharge rate: Self discharge rate is very low, It can be stored for a long time.

3. Environment: Eco-friendly, no pollution, don't contain lead, mercury, cadmium and other toxic and harmful heavy metal elements and substances.

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UNIT PACK POWER Co,Ltd.

NO.44 KengWei Road,ShangWu Community,ShiyanStreet,Bao'An District.Shenzhen,Guangdong,China

Phone:0755-23000958    0086-13632976537

Whatapp:+86-13632976537  

Skype:upp-rechie

Email:sales@unitpackpower.com

 

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@UNIT PACK POWER