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Gentrax GT3500 Inverter Generator
Lighter, Quieter, Safer.
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Catalogue | Blade | Slim | General | General |
Life Cycles | 3000+ | 3000+ | 3000+ | 3000+ |
Nominal Voltage(v) | 12.8V | 12.8V | 12.8V | 12.8V |
Usable Capacity(Ah) | 100Ah | 100Ah | 100Ah | 200Ah |
Nominal Capacity(Ah) | 100Ah | 100Ah | 100Ah | 200Ah |
Rated Energy(wh) | 1280Wh | 1280Wh | 1280Wh | 2650Wh |
Charging Voltage(V) | 14.2 - 14.6V | 14.2 - 14.6V | 14.2 - 14.6V | 14.2 - 14.6V |
Max. Continuous Discharge Current(A) | 100A | 100A | 100A | 100A |
Max. Discharge Current 5 sec(A) | 200A | 200A | 200A | 200A |
Charge Temperature | 0-50℃ | 0-50℃ | 0-50℃ | 0-50℃ |
Discharge Temperature | 20-60℃ | 20-60℃ | 20-60℃ | 20-60℃ |
Storage Temperature | -10℃ ~50℃ | -10℃ ~50℃ | -10℃ ~50℃ | -10℃ ~50℃ |
Approx Life Cycles | 2000+ | 2000+ | 2000+ | 2000+ |
BMS(A) | 100A | 100A | 100A | 100A |
Warranty | 2 Years | 2 Years | 2 Years | 2 Years |
Certify | UN38.3 | UN38.3 | UN38.3 | UN38.3 |
Brand | Gentrax | Gentrax | Gentrax | Gentrax |
Gain Weight | 15kg | 9.5kg | 9.5kg | 19kg |
Net Weight | 16kg | 10.4kg | 10.4kg | 20kg |
Product Size | 630*240*60 | 395*110*286 | 306*169*215 | 345*190*245 |
Package Size | 704*313*140 | 458*172*346 | 360*230*271 | 422*242*305 |
20GP | 560-600 | 760-840 | 900-1050 | 600 |
40HC | 1120-1200 | 1520-1862 | 1785-2100 | 1140 |
Case Material | metal-iron | ABS | ABS | ABS |
Cell Grouping(cell Series & Parallels) | 4S2P | 4S2P | 4S2P | 4S2P |
Factory-Battery Parallel Connection: | 4p(max) | 4p(max) | 4p(max) | 4p(max) |
Factory- Battery Series Connection: | N | N | N | N |
C rating (C) | 1C | 1C | 1C | 0.5C |
Protection Class(IP) | / | IP65 | IP65 | IP65 |
Charge Method | CC/CV | CC/CV | CC/CV | CC/CV |
Charging Voltage(V) | 14.2-14.6V | 14.2-14.6V | 14.2-14.6V | 14.2-14.6V |
Discharge Cut-off voltage | 10V | 10V | 10V | 10V |
Standard Charging Current(A) | 50A | 50A | 50A | 50A |
Max. Charging Current(A) | 100A | 100A | 100A | 100A |
Standard Discharge Current(A) | 100A | 100A | 100A | 100A |
Bolt Type | N | M8*2 | M8*2 | M8*2 |
Overcharge Protection(V) | 14.6V | / | 14.6V | - |
Overcharge Recovery(V) | 14.4V | / | 14.4V | / |
Overdischarge Protection(V) | 10V | / | 10V | / |
Overdischarge Recovery(V) | 11V | / | 11V | / |
Absorption Voltage(V) | 14.2-14.6V | / | 14V | / |
Float Charging | 14.2-14.6V | / | 15V | / |
Bolt Material | N | Iron nickel-plated | Iron nickel-plated | Iron nickel-plated |
Bolt Terminal Size (Length) | N | Hexagon x 14mm | Hexagon x 14mm | Hexagon x 14mm |
Bolt Terminal Perimeter | N | 25.12mm | 25.12mm | 25.12mm |


Gentrax Essentials
Find the parts and accessories for your model of generator
Why Gentrax?
Voted Best Generator for the sixth time in 2025 by Product Review, Gentrax is Australia’s most awarded name in portable power, trusted since 2012. Our inverter generators outperform the rest with better fuel efficiency, ultra-quiet runtime, and solid reliability, all at affordable prices.
Now, we’re powering even more adventures with Gentrax lithium batteries. Lightweight, long-lasting, and adventure-ready, they’re the perfect match for solar setups, 4WD trips, and home backup. Get even more reliable power that’s safe, smart, and built for the Aussie outdoors.

Driven By Purpose
Over the past decade, we have transformed the alternative energy market by launching a series of high-quality, safe & durable portable generators at affordable prices that were inconceivable when our journey started.

Safe & Eco-friendly Power
All Gentrax products are RCM Australian Standards, United States EPA, and GS (Europe) approved, and Euro 5 certified, making them safe for you and the environment.

12 Years of People-focused Innovation
Products come and go. Technologies evolve. But Gentrax continues to adhere to one core principle: Creating meaningful innovation that improves people’s lives. Be it rain-tested generators, after-warranty replacement, lightweight & compact designs or incredibly affordable prices, Gentrax is and will always be about people.

Proudly Australian
Gentrax is Australian-owned and operated. All Gentrax products are built and tested for Australia’s harsh conditions and shipped from our warehouse in NSW, Australia.

Reliable Power Output
Gentrax provides accessible & reliable power whether for outdoor or backup purposes. This is why all our inverter generators produce a Pure Sine Wave output which is suitable for running sensitive devices. Coupled with a powerful, 4-stroke engine, you'll get nothing less than excellent performance with every use.

60-Day Money Back Guarantee
All Gentrax purchases, including the change-of-mind returns, are eligible for our 60-Day Money Back Guarantee. We only ask that you pay the return cost back to us.
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Support
Whether you need help picking the right product, setting it up, storing or servicing it, we have the resources that could help. Still can't find the information you were looking for? Reach out to our expert team via call or email.