AT57-4 Lithium Battery Contact Base | OEM/ODM Battery Interface | Dongke
Built for Modern Battery Powered Tools
This series of battery holders and connectors provides secure mechanical mounting and reliable electrical contact for lithium-ion battery packs in cordless power tools. Widely compatible with cordless drills, impact drivers, electric wrenches, garden tools and other battery-powered equipment requiring standardized battery interfaces.
Secure Battery Connection
Precision-molded contacts ensure reliable electrical connection with zero intermittent contact issues.
12V-20V Compatibility
Available for all standard lithium battery pack voltages. Fits major tool brand platforms.
High-Current Contacts
Copper alloy contacts rated for sustained high-current discharge without overheating.
Durable PA66 Housing
Glass-filled nylon construction withstands drops, impacts and UV exposure.
Snap-in / Slide-on Design
Tool-free battery installation and removal. Ergonomic release mechanism.
AT57-4 Specifications
AT57-4 at a Glance
 | SERIES Dongke AT57-4 battery holder for cordless power tools. Reliable battery connector for 57 platform equipment. Secure installation and stable electrical connection CERTIFICATION In-house Certified. Products manufactured in ISO 9001:2015 facility with TUV/CE and UL-certified capabilities. Four-stage quality gate inspection on every production run. APPLICATION This series of battery holders and connectors provides secure mechanical mounting and reliable electrical contact for lithium-ion battery packs in cordless power tools. Widely compatible with cordless drills, impact drivers, electric wrenches, garden tools and other battery-powered equipment requiring standardized battery interfaces. |
Dimensions & Electrical Circuit Diagram
This series of battery holders and connectors provides secure mechanical mounting and reliable electrical contact for lithium-ion battery packs in cordless power tools. Widely compatible with cordless drills, impact drivers, electric wrenches, garden tools and other battery-powered equipment requiring standardized battery interfaces.
Battery Holder & Connector Applications
This series of battery holders and connectors provides secure mechanical mounting and reliable electrical contact for lithium-ion battery packs in cordless power tools. Widely compatible with cordless drills, impact drivers, electric wrenches, garden tools and other battery-powered equipment requiring standardized battery interfaces.
Brushless Drills
Battery holder for cordless brushless drills. Secure connection design for consistent power delivery during drilling.
Electric Wrenches
Battery holder for electric wrenches. Robust terminal design withstands vibration during high-torque fastening.
Electric Hammers
Battery holder for electric hammers. Stable power connection designed for impact-load environments.
One-Hand Saws
Battery holder for one-hand saws. Compact form factor with secure lock mechanism for portable cutting tools.
Chainsaws
Battery holder for chainsaws. Weather-resistant design for outdoor power tool battery packs.
Angle Grinders
Battery holder for angle grinders. Heat-resistant construction for sustained high-current discharge during grinding.
Reciprocating Saws
Battery holder for reciprocating saws. Secure lock mechanism prevents disconnection during heavy cutting.
Built for Global OEM Standards
Dongke Electric products are manufactured in our ISO 9001:2015 facility with UL- and TUV-certified in-house laboratories. Every unit passes four quality gates before it ships.
Four Quality Gates, One Reliable Product
Each stage is backed by documented procedures, trained personnel and calibrated instruments.
Stage 1 IQCRaw materials and components are inspected on arrival. We verify material certifications, dimensional accuracy and electrical properties against our specifications. | Stage 2 IPQCAutomated assembly lines are checked at every station. Regular line inspections, first-article checks and SPC monitoring detect and correct deviations in real time. | Stage 3 FQCEvery unit is tested before shipment. Key parameters including contact resistance, insulation resistance and switching operation are verified on 100% of products. | Stage 4 OQCPacked batches are re-checked before dispatch. Our team performs sampling inspections based on AQL standards, verifying packaging integrity and labeling accuracy. |
Quality You Can Trust | Dongke Electric operates a dual-accredited testing laboratory (UL + TUV) — a distinction shared by only a handful of manufacturers in our industry. | Trusted by Customers in 30+ Countries |
Complete Cordless Power Tool Component Solution
Dongke provides integrated components for cordless equipment — from battery connection to motor drive — enabling OEM customers to source a complete solution from a single manufacturer.
| STEP 1Battery HolderBattery Interface | STEP 2Speed SwitchUser Control | STEP 3BLDC ControllerMotor Drive | STEP 4Brushless MotorPower Output | STEP 5More HoldersFull Range |
Battery Holder → Speed Switch → BLDC Controller → Brushless Motor — Complete cordless power tool solution from Dongke Electric.
AT57-4 — Frequently Asked Questions
Compatible Components & Complete Solutions
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