Heavy Duty Battery Box

Our heavy duty battery box allows you to turn a regular deep-cycle battery into a convenient portable power station, or create a dual-battery setup using the optional VSR. It is suitable for all deep-cycle batteries up to 330mm (l) x 180mm (w) x 240mm (h) in size.

Heavy Duty Battery Box
Heavy Duty Battery Box
Heavy Duty Battery Box
Heavy Duty Battery Box
Heavy Duty Battery Box
Heavy Duty Battery Box
Heavy duty battery box
Heavy duty battery box

Heavy Duty Battery Box

HKPBATTBOXB

Regular price$199.00
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Heavy Duty Battery Box

Heavy Duty Battery Box

$199.00

Multiple port types allows you to connect a range of devices

Constructed of durable ABS plastic and meeting the UL 94V-0 standard for flammability of plastic products, this battery box is a high-quality unit that will last for many years. It contains two 12v outlets with 10A fuses, a dual USB (1x USB-C + 1x USB-A) outlet, four 50A Anderson-style outlets that can be used as outputs or inputs, and a 175A Anderson-style outlet which can be used as a jump-starter. Unlike most other models on the market, all Anderson-style ports are recessed into the body to minimise the possibility of damage, and the internal cabling uses heavy-gauge wire and quality connectors.

Create your own portable power station.

Our heavy duty battery box allows you to turn a regular deep-cycle battery into a convenient portable power station, or create a simple dual battery setup using either a DC-DC charger or our optional 50A Voltage-Sensitive Relay (VSR) and Dual Battery Wiring Kit. It is suitable for a range of battery types including AGM, Lithium, Wet, Gel and Calcium, and can handle batteries up to 330mm (l) x 180mm (w) x 240mm (h) in size.

The battery can be charged from a range of sources (including solar panels) by simply plugging into one of the 50A Anderson-style ports. The battery’s charge status and voltage can be easily seen via the large digital display.

Key features

  • Constructed from UL 94V-0 compliant fire-resistant ABS plastic
  • Multiple port types allows you to connect a range of devices
  • Easily connect a DC/DC charger or solar panel to charge the battery, or use the optional 50A Voltage-Sensitive Relay (VSR) and Dual Battery Wiring Kit to charge directly from crank battery
  • Can be used to jump start vehicles using our optional 175A Anderson jumper cable set
  • All ports are recessed into the body to reduce likelihood of damage
  • Easily see battery status with large digital display

Easy dual battery setup

Using a battery box combined with a VSR is the easiest way to create a dual battery setup in your vehicle.

The VSR acts as an isolator, allowing the auxiliary battery (inside the box) to charge directly from the crank battery while the car is running. When the ignition is switched off and battery voltage drops below 12.7V, the VSR automatically cuts the link between the auxiliary and crank batteries.

Materials ABS plastic (UL 94V-0 compliant)
Box dimensions 455mm (l) x 240mm (w) x 330mm (h)
Max. battery dimensions 330mm (l) x 180mm (w) x 240mm (h) Note: batteries longer than 324mm will sit at a slight angle inside the box. This will not affect performance.
Max. battery weight 35.0kg
Suitable battery types Any deep cycle (Lithium, AGM, Calcium, Wet, Gel)
Charge method via Anderson plug input or optional VSR
Ports 1 x dual USB output (1x USB-C + 1x USB-A) 2 x cigarette plug outputs 4 x 50A Anderson plug inputs/outputs 1 x 175A Anderson plug output
Cable gauge 2AWG (35mm2) to battery and 175A Anderson port 8AWG (10mm2) to 50A Anderson ports 14AWG (2.5mm2) to cig & USB ports
Operating temperature -10°C to 50°C
Weight 3.2kg
1x Heavy duty battery box
1x set bolts, brackets & Allen keys
1x Strap

*Our USB-C-equipped battery boxes are still on rollout. Our white battery boxes and boxes purchased from stockists may not have the USB-Cs installed if part of our older batches

All Hardkorr products are manufactured using the highest quality materials. We are confident that they are the most durable in the market and will give you many years of reliable service. We stand behind this product with a comprehensive 2-year Australian warranty and a 30-day money back guarantee.

Customer Reviews

Based on 84 reviews
86%
(72)
10%
(8)
5%
(4)
0%
(0)
0%
(0)
S
Sam
Quality kit

Second battery box I have had from HardKorr and just as happy with this as I was first time around. Nothing wrong with first one, just needed a second one.

A
Alex
Installed in my camper trailer

Simple to install, well built, great option for DIY setups. Love it

K
Ken S.
Highly Recommended: Great Build and Price Box with Added Features for Optimal Air Flow and Bug Pr...

Great box , much better than the cheap flimsy stuff , lve added a 20a dc dc mounted on top ( for air flow ) drilled 4 x 25mm vent holes high on the sides , with steel mesh to stop bugs entering

Running a 100ah lithium in it , found the volts readout is not accurate its around .5v out , rendering useless , but l have a direct link to the battery via its own monitor so it doesn’t matter , just something l noticed



Highly recommend this box , great build and price

K
Ken S.
Highly Recommended: Great Build and Price Box with Added Features for Optimal Air Flow and Bug Pr...

Great box , much better than the cheap flimsy stuff , lve added a 20a dc dc mounted on top ( for air flow ) drilled 4 x 25mm vent holes high on the sides , with steel mesh to stop bugs entering

Running a 100ah lithium in it , found the volts readout is not accurate its around .5v out , rendering useless , but l have a direct link to the battery via its own monitor so it doesn’t matter , just something l noticed



Highly recommend this box , great build and price

J
Jono
Hard Korr 12V Set Up: Impressive Quality and Easy Installation for Smart Alternators

My current set up is my first 12V set up and I'm extremely glad I went with Hard Korr.
I deliberated for a long time as to whether I go with other brands and once I saw the construction of the other boxes, which my fellow campers use (namely Adventure Kings), I was glad I went with this one.
The fittings are well organised and the wiring inside is very neat. One of the workers at a Jaycar store actually commented on how impressed they were with the finish quality under the lid.
I use this with the VSR kit which was super easy to install. I have a 2011 NT Pajero and the VSR kit works perfectly with the "smart alternator".
Some people have raised a very good point with the isolation switch sticking out so it could be prone to breaking off.
I have mounted mine easily out of the way of potential damage so it's not an issue for me but I can see the concern.

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