This is a customized link, we accept all sizes of stainless steel battery boxes, including steel box, switch, coulometer ,high quality Customize Charging plug RV. If you need to build a small power station, solar power station, electric vehicle mobile power supply, please communicate with us, we will give your battery matching program: 12V 24V 36V 48V... 2000W 3000W 3500W 5000W 7200W.... 。Lifepo 4 batteries have higher energy density and lighter weight. Excellent cycle life, low internal resistance, versatile, energy saving and environmental protection. Remark: We have lithium, lifepo4batteries, accept customized battery pack, we can't update all items here. If you want any others, please take it easy to contact with me andtell me your requirement (the capacity / voltage / size / discharge current ) , thanks. One-stop solution, Lithium / LiFePo4 battery packs, accept customized, OEM sevices, We will respond within 1 business day or less. Anyone who is open dispute without contact us , no warranty! add blacklist . No matter what problems is , we can slove them,Any questions please contact us first ! Before taking the order: Please read carefully all the description before taking orders, the battery is suitable for DIY lovers with experience, people who are not familiar with electronic, please go to our shop to buy the finished product. Those buyers who buy this battery, must agree thatyou are familiar with the safe use of lithium battery knowledge. Reminder: DIY battery pack must getthe cells balanced (same voltage ) before assembly.Later if there happens don't know how to assembled or unbalanced assembly is not accepted refund. please consider before taking orders, place order means you have agreed. thank you for your cooperation! DIY assembled battery note: Professionals will detected voltage/resistance/appearance and other issues before every shipment, we can only ensure that the single battery is good, when arrival you can test the cells within 2-3 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. 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. Tip: These products are batteries only, without protection board, you need to purchase a match one! You can check our shop and search BMS. Courier and logistics In addition, because the battery isprohibitedproduct, many courier and logistics are unable to send, the arrival will indeed be slower, so please wait patiently after place an order. Can Not give us bad feedback due to the courier company or because of the courier service slow or other factors. open dispute will be unacceptable. Sorry for any inconvenience. 
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