Peak current
1000A
Serious starting power, every start
TerrainX
TX300 Engine Super Starter
1000A · 12V · Petrol up to 6.5L · Diesel up to 4.5L
Be the first to reviewLaunch price$299.00GST included
- Permanently fitted under the bonnet, always connected
- Takes the peak cranking load off your battery
- Lithium-free supercapacitor: no swelling, recharges itself
- Bluetooth app with live voltage and remote Force Start
Multi-unit savings are applied automatically at checkout.
- 2-year warranty
- 30-day returns
- Secure checkout
- 1 × TerrainX TX300 Engine Super Starter
- 2 × Hook and loop straps
- 1 × Spanner
- Peak current
- 1000A
- System
- 12V only (not 24V)
- Engine size
- Petrol up to 6.5L, diesel up to 4.5L
- Operating voltage
- 5–20V (max output 15V)
- Operating temperature
- −40°C to 80°C
- Cycle life
- Up to 500,000 cycles
- Standby draw
- 3mA
- Charge from vehicle
- 3–10 minutes
- Charge via USB-C
- 3–40 minutes (5V/2A)
- Bluetooth
- BLE 5.3
- Protection
- IP65
- Dimensions
- 25.8 × 10.1 × 5.5 cm
- Weight
- 1.1 kg
- Cable length
- 60 cm
The TX300 mounts under the bonnet and connects to your starter battery terminals with its 60 cm leads, secured with the included straps.
Full steps are in the TX300 manual (PDF). If you're not comfortable working on your vehicle's battery, have an auto electrician fit it.
Every TX300 comes with a 2-year warranty and 30-day returns. See our refund policy for the full details.
Works before you need a jump
Lives under the bonnet.
Works every start.
Most jump starters live in the boot, forgotten until the day they’re flat too.
The TX300 lives under the bonnet, working on every start, every day, before anything goes wrong.
- Always connectedWired to your starter battery, with an ultra-low 3mA standby draw.
- Steps in on every startTakes the peak cranking load so your battery doesn’t have to.
- Keeps you in the loopLive voltage, start history and remote Force Start in the app.
By the numbers
Built for the engine bay. Rated for real life.
Engine coverage
6.5L
Petrol up to 6.5L · Diesel up to 4.5L
Cycle life
500K
Charge and discharge cycles
Operating range
−40° to 80°C
Frosty mornings to outback summers
Smart monitoring
BLE 5.3
Bluetooth app, always in the loop
Weather protection
IP65
Dust and water resistant
Standby draw
3mA
Barely sips power while parked
Energy storage
No lithium
Supercapacitors: no lithium pack to swell
See it in action
Fitted once. Ready wherever you go.
The TX300 fitted and working on a touring 4WD.
Install
Bolts to your battery terminals
Under the bonnet
Stays fitted, out of sight
Built tough
IP65 dust and water resistant
Go further
Ready for the next remote trip
Why the TX300
Designed to be forgotten. Ready every time.
Fit once. Forget it’s there.
Wired to your starter battery under the bonnet, the TX300 stays connected and ready. No charging schedule and nothing to grab from the boot.
Takes the peak load.
Starting is the hardest moment for any battery. The TX300 steps in on every start and takes the peak cranking load off your battery.
Two ways to charge.
Tops itself up from your vehicle in 3–10 minutes, or charge it over USB-C (5V/2A) in 3–40 minutes. No wall outlet needed.
Lithium-free by design.
Supercapacitors store energy without lithium cells, so there’s no lithium pack to swell under your bonnet, and they’re rated for up to 500,000 charge cycles.
Control it from your phone.
Live voltage, temperature and start history over Bluetooth, plus a remote Force Start for when you need it most.
Built for the engine bay.
IP65 rated against dust and water, and made to handle under-bonnet heat, vibration and freezing mornings.
Watch
The TX300 in 45 seconds.
Real travellers, a real 4WD. See it fitted to the battery, left under the bonnet, and started from the Super Starter app.
- Fitted once to your starter battery
- Recharges itself as you drive
- Force Start from your phone
Supercapacitor vs lithium
Most jump starters wait for failure.
The TX300 works before it.
A portable jump starter is a rescue tool for the day something goes wrong. The TX300 is a system that’s already working, every time you turn the key.
TerrainX TX300
Portable lithium jump starter
Fitted under the bonnet
Kept in the boot or garage
Tops itself up from your vehicle
Needs recharging between uses
3mA standby draw while parked
Can lose charge sitting on the shelf
Supercapacitor, no lithium cells
Lithium-ion battery pack
Operates from −40°C to 80°C
Output can drop in the cold
Rated for up to 500,000 cycles
Capacity fades as the battery ages
Helps on every start
Used after the battery has failed
It’s not just different technology. It’s a different way of thinking about starting your vehicle.
Based on typical portable lithium jump starters. Features vary by brand and model.
Reviews
Reviews from TX300 drivers.
Be one of the first to review the TX300
Fitted a TX300? Tell other drivers how it's going. Honest reviews help people choose the right setup for their vehicle.
Helpful things to mention
- Your vehicle and engine
- How the install went
- Cold-morning starts
- Using the app
FAQ
Questions? Answered.
Everything you need to know about fitting, using and owning a TX300.
The TX300 is made for 12V vehicles with petrol engines up to 6.5L or diesel engines up to 4.5L. That covers most cars, utes, 4WDs and SUVs in that range.
Not sure about yours? Send us your make, model and engine and we'll check for you.
The TX300 is for 12V systems only. Never connect it to a 24V system, and it isn't for fully electric vehicles.
On hybrids, only fit it if the 12V battery cranks the engine and your vehicle maker allows it. Not sure? Contact us with your vehicle details.
The TX300 mounts under the bonnet and connects to your starter battery terminals using its 60 cm leads. It's secured in place with the included hook-and-loop straps.
Full steps are in the TX300 manual. If you're not comfortable working on your vehicle's battery, have an auto electrician fit it for you.
No. The TX300 works alongside your existing starter battery. It stays connected and takes the peak cranking load off your battery each time you start.
Not usually. Once fitted, the TX300 charges itself from your vehicle's battery in about 3–10 minutes, so there's nothing to remember.
It also has a USB-C port (5V/2A) that charges it in 3–40 minutes if you ever need to top it up separately.
The TX300 has an ultra-low standby draw of just 3mA. You can check your battery's voltage in the app any time while the vehicle sits.
Use Force Start: tap it in the app, or hold the button on the unit for about 3 seconds, once the green light is steady. Then crank the engine within 10 seconds.
If your battery is damaged or deeply flat, it may need testing or replacing. The TX300 is a starting aid, not a fix for a failed battery. Full steps are in the TX300 manual.
Yes. The TX300 operates from −40°C to 80°C and is IP65 rated against dust and water, so it's built for life in the engine bay.
The TX300 pairs with the free Super Starter app (search “Super Starter” in the App Store or Google Play) over Bluetooth (BLE 5.3). It shows live voltage, temperature, start history and performance data, and includes a remote Force Start for when the vehicle won't respond.
No. The TX300 works on its own once it's fitted, and Force Start also works from the button on the unit. The app is there when you want to check in on your battery or start remotely.
Every TX300 comes with a 2-year warranty covering faults in materials and workmanship. If something isn't right, contact us with your order number and we'll sort it out.
This is in addition to your rights under the Australian Consumer Law. See our warranty page for details.
Change-of-mind returns are accepted within 30 days of delivery if the TX300 is unused and hasn't been installed. Faulty products are covered by our warranty and the Australian Consumer Law.
See our refund policy for the full details.