Seachoice 63021 4 AWG Marine Grade Cable, Black, 2 Ft.
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Seachoice 4 AWG marine grade battery cable (black) is built for dependable power connections in harsh, wet conditions. At 2 ft long, this UL1426-rated tinned copper cable features adhesive-lined, 3:1 heatshrink on each electrical connection for moisture and corrosion protection—ideal for replacing or extending battery wiring.
Key Features
- 2-foot-long marine battery cable for shorter runs and clean battery-to-system connections
- 4 AWG (0.204 in. / 5.19 mm) cable diameter
- Black conductor for battery negative terminal applications
- Marine grade, premium UL1426 tinned copper battery cable
- Fine-stranded for maximum conductivity and flexibility
- Flame- and UV-resistant
- Rated to 600 volts and 105°C / 221°F
- Tinned copper lugs resist corrosion
- Each end includes adhesive-lined, 3:1 heatshrink tubing over the electrical connection to help seal out moisture and other corrosive elements
- Heatshrink provides strain relief to help promote a longer-lasting battery connection
- Fits up to a 5/16" stud
- Manufacturer part number: 50-63021
Product Compatibility
- Marine battery interconnects (battery-to-start/charge wiring)
- Marine electrical repairs and replacements requiring 4 AWG tinned-copper battery cable with heatshrink-sealed ends
- General 12V/24V DC battery cable replacement where a 4 AWG black negative lead is needed
Product Details
- Seachoice 63021 4 AWG Marine Grade Cable, Black, 2 Ft.
- Gauge/Conductor size: 4 AWG
- Conductor diameter: 0.204 in. / 5.19 mm
- Color: Black
- Length: 2 ft.
- Cable type/spec: Marine grade, premium UL1426 tinned copper battery cable
- Stranding: Fine stranded for conductivity and flexibility
- Lug construction: Tinned copper lugs resist corrosion
- Temperature rating: 105°C / 221°F
- Voltage rating: 600 volts
- Insulation/sealing: Adhesive-lined, 3:1 heatshrink tubing on each end over the electrical connection
- Resistance: Flame- and UV-resistant
- Stud fitment: Fits up to a 5/16" stud
- Manufacturer part number: 50-63021
Parts Desk Insights
Best Use Case: Use this cable for direct battery negative wiring where you need a short 2 ft, 4 AWG marine-grade run with corrosion-resistant tinned copper lugs and heatshrink-sealed ends.
Common Issues: Common install issues include loose or misaligned connections that prevent proper heatshrink sealing, and choosing the wrong stud size—this cable is intended to fit up to a 5/16" stud. For best results, verify stud size and confirm the mating surfaces are clean and secure before applying heat to the heatshrink.
Related Products & Accessories
- Browse Wiring & Connections - Shop related marine wire, cable, and battery connection accessories.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.