Customized Capacity DIY 18650 Lithium-Ion Battery Pack
High-performance 18650 lithium-ion cells with premium-grade Li-ion chemistry for stable power output and extended cycle life. Available in 3.7V, 7.4V, and 11.1V configurations with capacities ranging from 2000mAh to 4000mAh to suit diverse voltage and energy demands. Precision spot-welded nickel strips ensure low internal resistance and optimal conductivity. Robust PVC shrink-wrap casing enhances durability and safety with built-in protection against overcharge, over-discharge, and short circuits. Ideal for DIY power banks, solar energy storage, electric tools, RC models, and portable electronics. Fully customizable in series/parallel layouts—tailor capacity and voltage for your project. Global wholesale pricing with bulk discounts. Strict quality control meets international safety standards (UN38.3, CE, RoHS). Compatible with most 18650 battery holders and devices.