Import E-Bike 48v14ah Downtube Lithium Battery Pack — Buy in wholesale FOB from Supplier in China

The E-bike 48V 14Ah downtube lithium battery pack is a integrated power unit designed for direct mounting within the downtube frame of electric bicycles. It operates at a nominal voltage of 48V with a minimum rated capacity of 13.5Ah, delivering approximately 648Wh of energy. The pack uses cylindrical 18650 or 21700 lithium-ion cells arranged in a 13S4P configuration to achieve its voltage and capacity targets, with a built-in battery management system for cell balancing and protection.

The casing is constructed from ABS or aluminum alloy with an IP65 rating for dust and water resistance, suitable for outdoor cycling conditions. Typical industry standards for such packs include a charge voltage of 54.6V and a discharge cutoff of 35.1V, which this unit aligns with. Cell chemistry is NMC, offering a balance of energy density and cycle life, with a standard cycle life of 800 to 1000 cycles at 80% depth of discharge. No thermal runaway protection or external temperature sensors are specified, so buyers should verify these features if operating in extreme climates.

This battery is primarily purchased by e-bike manufacturers, aftermarket retrofit suppliers, and regional distributors in Europe, North America, and Southeast Asia. It supports standard 54.6V 2A to 3A chargers and is compatible with most 48V mid-drive and hub motor systems. Trade terms typically include FOB Shenzhen or CIF port of destination, with minimum order quantities starting at 50 units. Packaging is in individual cardboard boxes with foam inserts, and each unit includes a user manual and warranty card.

Shenzhen Believe Technology Co., Ltd. is a manufacturer and exporter of lithium battery packs based in Guangming District, Shenzhen, Guangdong Province. The company's facility houses cell assembly lines, BMS integration stations, and testing chambers for voltage, capacity, and safety validation. Its trust tier is listed as harbor, indicating verified export history and compliance with basic international shipping protocols. There is no public information on company founding date, employee count, or client roster.

The supplier does not claim ISO certification, CE marking, or UN38.3 compliance in the listing, though these are standard for battery exports to the EU and North America. Response rate and average response time are not recorded, suggesting limited customer service infrastructure. Buyers should request test reports for overcharge, short circuit, and vibration tests before placing bulk orders. The company's focus appears to be on OEM and ODM production for e-bike brands rather than retail sales.