Renogy 8FT 8AWG Battery to Charge Controller Tray Cable

Short Product Summary

A matched pair of 8AWG tinned copper cables, 8ft (2.4 m) long, with 3/8 inch ring lugs on one end for the battery and bare stranded wire on the other to land straight into a charge controller terminal. Positive and negative, ready to fit.

Why This Product

The cable between your charge controller and your battery is the part of a solar system nobody photographs and everybody underestimates. Undersize it and you lose voltage across the run, which means the controller sees a lower battery voltage than is really there and stops charging early. You paid for the panels; there is no sense throwing away the yield in the last two metres. 8AWG is 8.37mm² of copper, rated to 55A under NEC guidance, which comfortably covers a Rover 30A or 40A, an Adventurer 30A or a Wanderer 30A controller. On a caravan where the controller sits near the battery box, 2.4 m is usually enough to route neatly rather than in a straight line. These are tinned copper rather than bare copper, which matters on the coast and matters anywhere a battery box gets damp. Bare copper goes green at the lug and resistance climbs; tinned copper does not.

Key Features

• 8AWG (8.37mm²) conductor – rated to roughly 55A, matched to 30A and 40A controllers with headroom for voltage drop.
• 2.4 m (8ft) per cable – enough to route around a battery box instead of cutting corners.
• 3/8 inch ring lugs at the battery end – fits standard battery terminal studs without adapters.
• Bare stranded tail at the controller end – goes straight into a screw terminal, no crimping required on site.
• Tin-plated oxygen-free copper – resists corrosion in damp battery compartments and coastal air.
• TUV listed for PV solar use – UV resistant and rated for outdoor conditions.
• Heat-shrink insulated terminals – abrasion resistance and no exposed copper at the lug.
• Supplied as a positive and negative pair – one order, both cables, correctly colour coded.

Ideal For

• Connecting a 30A or 40A MPPT or PWM controller to a caravan house battery.
• Replacing undersized factory wiring that is costing you charge current.
• Camper trailer and off-road trailer solar installs done properly the first time.
• Bush cottage and farm solar setups where the controller is a couple of metres from the bank.
• Anyone who has measured a voltage drop and decided to fix it.

Local Support from 4Matt Campers

We ship Renogy components anywhere in South Africa. If you are unsure whether 8AWG is enough for your controller and cable run, tell us the amp rating and the distance and we will work it out with you. Nothing in a solar install is cheaper to fix than cable gauge, and nothing is more annoying to fix later. Everything else is in electrical accessories and Renogy.

Technical Specifications

• Model: Renogy Battery to Charge Controller Tray Cable, 8FT 8AWG
• SKU: RNG-TRAYCB-8FT-8-G1-SA
• Conductor size: 8AWG (approximately 8.37mm²)
• Length: 8ft (approximately 2.4 m) per cable
• Suggested maximum current: approximately 55A (NEC guidance)
• Battery end: 3/8 inch ring lug
• Controller end: bare stranded wire
• Conductor material: tin-plated oxygen-free copper
• Insulation: UV resistant, TUV listed for PV solar application
• Terminal insulation: heat-shrink tubing
• Supplied as: one positive and one negative cable

What's Included

• 1 x 8FT 8AWG positive tray cable with 3/8 inch ring lug
• 1 x 8FT 8AWG negative tray cable with 3/8 inch ring lug

Optional Fitment & Upgrade Notes

Fit an in-line fuse or ANL fuse on the positive cable, as close to the battery terminal as you can get it. The fuse protects the cable, not the controller, so size it to the cable rather than to the panel array. Strip only as much insulation as the controller terminal needs and make sure every strand goes into the clamp; a few strands folded outside the terminal is how hot spots start. Torque the ring lug onto the battery stud properly and check it again after the first long gravel trip. If your run is longer than 2.4 m, or your controller is 60A rather than 30A, step up to the 4AWG version rather than joining two of these together.

Complete Your Setup

Pair it with a controller from solar charge controllers, an array from solar panels and a bank from lithium batteries. ANL fuse sets, fuse cable and lugs are in electrical accessories, and if you are running an inverter as well, look at inverters and inverter chargers.

FAQ

Is 8AWG enough for my 40A controller?
For a 40A controller over 2.4 m, yes. For a 60A controller, no. Step up to 4AWG.

Can I shorten the cable?
Yes, cut from the bare end, not the lug end. Shorter is electrically better as long as it still routes safely.

Which end goes to the battery?
The ring lug end. The bare stranded end lands in the charge controller's battery terminals, which on Renogy controllers are marked with a battery icon.

Do I still need a fuse?
Yes. An ANL fuse on the positive lead near the battery is standard practice and protects the cable from a short.

Why tinned copper rather than plain copper?
Battery boxes get damp and coastal air is corrosive. Tinning stops the strands going green at the terminal, which is where resistance and heat build up.