DIY battery packmust get the cellsbalanced (same voltage )before assembly. Later if there happens don't know how to assembled or wrong assembly is not accepted refund. Professionals will detectedvoltage/resistance/appearanceand other issues before every shipment, we can only ensure that the single battery is good, when arrival you can test the cells within 15 days, after that means batteries have no problem, does not provide return nor refund. If you found problems you can contact us for return or refund.Battery can only be unused(the electrode intact, no welding, no wear, the appearance good)to provide return. Any return behavior buyers need to be responsible for shipping fee.
1).Warranty period:5 years(from the date of successful delivery),if the single battery capacity less than 80% initialcapacity,take the test pictures or video to us,we will replace it or give satisfied solution.
2).If any miss or damaged for the shipping. Please contact us firstly, then send us the picture or video to check. In case oflossof cargo or the battery is damaged and can not be used or there is a greater risk of use,we will communicate with buyer if resend it or replace it or refund the product cost.If buyer send back the cells to seller,buyer should pay for the shipping cost.
3).These situations not provide return nor refund
1. After the assembly or assembly process happen any problem, such as theprotection board connected to the wrong wire burned lead to battery damage, charger failure, the assembly error or unbalanced assembly, etc.
2. For damage caused , such as battery bulge/welded, battery pack without protection BMS caused by charging.
Tips:
* These products are prototype batteries without protection board, you need to purchase a match one! Pls click here to consult us.
* please consider before taking orders, place order means you have agreed. thank you for your cooperation!
