DIY Assembled Battery case, Multifunctional Charging case, 22.5W Fast Charging Mode Battery case, can Hold 40 18650 Flat Head Battery Cases, with Light - Black

Holds 40 Flat Head Batteries】This welding-free and reusable DIY battery case is compatible with 40 flat head batteries, easy to assemble without professional tools. 【Dual-Mode LED Main Light for Night Lighting】Equipped with built-in LED main light with 2 modes (double-click/long-press the button to activate), ideal for night use. 【Power Display & Safe Design】With power display function; the motherboard needs to be activated by plugging in power after installing batteries, and reverse connection won’t damage the motherboard. 【Reusable Detachable Shell】The shell supports repeated disassembly for easy maintenance and battery replacement; batteries must be assembled in parallel (series springs will deform). Input power: 5V-3A/9V-2A/12V-1.5A, output power: 5V-3A/9V-2A/12V-1.5A/4.5V-5A/5V-4.5A 【Calibrate Power Display】After installing batteries, cycle charging (drain the power completely then fully charge, repeat 3-4 times) to ensure accurate power display. 【Product Versions & Color】D40 version (0.63 conversion rate), ; Color: Black (Battery Not Included).

• 【Comprehensive Battery Solution】This storage case holds 40 flat head batteries, featuring reusable and welding-free design for easy assembly and disassembly. No battery
• 【Power Display & Auto Shutdown Function】Features power display and intelligent auto shutdown function, helping extend battery life and improve battery efficiency during non-use periods.
• 【Easy Activation of LED Light】The LED light function, activated by long-pressing or double-clicking, provides a convenient user experience in low-light environments.
• 【Size Guide】For a perfect fit, please be sure to check the exact dimensions of your batteries with this model size chart before making a purchase.Need to assemble battery model: 18650 flat head 3.7V（ Link price: No battery）
• (Product pre purchase notice) This product does not have a battery and requires 40 18650 lithium batteries with flat heads. At least 20 batteries need to be installed (batteries must be securely fixed). Link price: No battery