DIY battery pack must get the cells balanced (same voltage) before assembly. Later if there happens don't know how to assembled or wrong assembly is not accepted refund. Professionals will detected voltage resistance/appearance and other issues before every shipment, we can only ensure that the single battery is good.
1. Warranty period: 5 years (from the date of successful delivery), if the single battery capacity less than 80% initial capacity, please 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 of loss of cargo or the battery is damaged and cannot 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.
These situations not provide return nor refund:
1.After the assembly or assembly process happen any problem.such as the protection 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 BMS!
* Please consider before taking orders, place the order means you have agreed.
Thank you for your cooperation!
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