The warranty period is 5 years from the date you receive.
We only replace new cell for free due to the failure of manufacturing.
Before the shipment, we will detect the cell voltage/resistance/appearance and other issues. we can only ensure that single cell is good before the shipment.
When arrival you can test the cells within 1 week, if you found problems please contact us for refund or replace. Any return behavior buyers need to be responsible for shipping fee.
Please read carefully all the description before taking orders, the battery is suitable for DIY lovers with experience, people who are not familiar with the safe use of lithium battery knowledge, please go to our shop to buy the finished product.
DIY battery pack must get the cells balanced (same voltage ) before assembly.
And we don’t accept refund for buyers who don’t know how to assembled or unbalanced assembly.
Please use the correct BMS during assembly. We don’t accept refund for the problem caused during assembly process or after the assembly. Such as not use the BMS, the BMS connected to the wrong wire lead to battery damage, charger failure, the assembly error or unbalanced assembly, etc.
Before assembling, please make sure use the same capacity cell and use the same brand of the cell. It is forbidden to mix cells with different capacity and brand in the same battery system. Otherwise, we will not be responsible for quality assurance.
About the delivery time:
a. The batteries ship to EU, US, CA, Australia are including Shipping Fee and tax. By sea take 30-40 work days.
The shipping information will be updated after the package finish the custom clearance and pick up by the local express.
b. For customers in Ukraine, we can ship the from China to your door. By sea take 40-50work days; Remote areas can't be shipped, please contact the customer service.
c. For Russia, Belarus customers, it can only ship by sea or train, usually take 30-45 work days.
d. Ship to Asia countries usually will take 20-30 work days. And the shipping details usually be updated after it arrive to local post.
Please make sure the recipient information is correct. After the batteries arrive to local transport station, it needs to contact you to arrange the shipment. If due to your phone number is not right or could not contact you through message cause the delivery fail. We will not accept the dispute.
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