18V 4.0Ah Lithium Battery — Universal Replacement for Cordless Power Tools

18V 4.0Ah Lithium Battery — Key Specifications

The 18V 4.0Ah lithium battery is a high-capacity replacement battery designed for professional and industrial cordless power tools. Built with Grade-A lithium-ion cells, it delivers stable power output and extended runtime for demanding job site use.

Voltage: 18V Capacity: 4.0Ah Cell Type: Lithium-Ion (Li-ion) Certifications: CE / RoHS Compatible Platform: Universal 18V cordless power tools MOQ: 100 pcs (OEM/ODM available)

Compatible 18V Cordless Power Tools

This 18V 4.0Ah battery is compatible with a wide range of 18V cordless power tools, including electric drills and hammer drills, impact wrenches and impact drivers, circular saws and reciprocating saws, angle grinders, and other 18V platform tools. For OEM orders with specific brand compatibility, please contact us to confirm connector type and fitment.

 Why Choose HNF Battery?

Grade-A Cells for Consistent Performance

We use only Grade-A lithium-ion cells in every 18V 4.0Ah battery pack. Grade-A cells deliver stable voltage output, longer cycle life (500+ charge cycles), and lower self-discharge compared to generic alternatives. Your tools run at full power longer and your battery lasts for years, not months.

Built-in BMS Protection

Every battery includes a fully integrated Battery Management System (BMS) protecting against overcharge, over-discharge, short circuit, and overheating — safeguarding both your battery and your tools.

High Capacity for Extended Runtime

At 4.0Ah, this battery provides significantly longer runtime than standard 2.0Ah packs, reducing downtime on the job and keeping your crew working through longer shifts.

CE / RoHS Certified

Our batteries carry CE and RoHS certifications, confirming compliance with international safety and environmental standards. UN38.3 test reports are available upon request for air freight shipments.

Factory Direct Pricing

HNF Battery manufactures directly with no middlemen. Whether you need 100 units or 10,000 units, we deliver consistent quality at competitive wholesale rates.

OEM & Custom Orders

HNF Battery supplies wholesale distributors, hardware retailers, and private-label brands worldwide. We support full OEM customization including custom voltage and capacity (14.4V / 18V / 21V, 2.0Ah–6.0Ah), custom housing color and branding, specific connector types for brand compatibility, and retail or bulk packaging options.

All batteries are pre-tested before shipment and backed by a 12-month warranty against manufacturing defects. We provide full export documentation including commercial invoice, packing list, and UN38.3 test report to support smooth customs clearance worldwide. Contact HNF Battery today to request a free sample or get a wholesale price list.

MOQ starts from 100 units. Samples available before bulk orders. For a factory quote, visit our