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N2K Network Hardware
NMEA 2000 Accessories
Tees, drop cables, terminators and elbows for building and extending an NMEA 2000 network.
NMEA 2000 Hardware
Backbone and drop components for N2K networks.
One Network, Every Device
Terminate Both Ends or Nothing Works
An NMEA 2000 backbone needs a terminator at each end, a tee for every device and drop cables kept within spec. Get those three right and the network is invisible; get one wrong and you will chase intermittent faults all season.
Standard Group Sizes
Sized for the tray you already have
45 Years of Expertise
Dependable battery solutions since day one
Warranty-Backed
Coverage terms listed on every product page
US-Based Battery Experts
Talk fitment before you buy
The Parts That Finish the Job
Talk to a battery expertMarine Shopping
Network hardware, wiring and electronics power.
- 2 YR WARRANTY
- 10 YR WARRANTY
- 10 YR WARRANTYBLUETOOTH
- 10 YR WARRANTYBLUETOOTH
Frequently Asked Questions
Fitment & Compatibility
How many terminators does an NMEA 2000 network need?
Exactly two — one male and one female, one at each end of the backbone. A network with the wrong number of terminators will behave unpredictably.
Can I connect a device directly to the backbone?
No — each device connects through its own tee and drop cable. Keep drop cable lengths within the NMEA 2000 specification or you will see dropouts.
Warranty & Support
What warranty comes with these batteries?
Terms vary by product line — the term for each battery is listed on its product page, and the full details are on our Warranty Information page. Register your battery online after purchase to activate coverage.
What if I am still not sure which one to buy?
Call our US-based battery team on 1-800-827-3232 before you order. Tell us the machine, the tray you are working with and how long you need to run between charges, and we will point you at the right part number, or message us.
Build the Backbone
Tees, drops and terminators — get the topology right the first time.