Gentrax 12V 300Ah Lithium LiFePO4 Battery
About Gentrax 12V 300Ah Lithium LiFePO4 Battery
Heavy-Duty Power, Built for the Long Haul
Powerful, durable, and adventure-ready–the Gentrax 12V 300Ah LiFePO4 Battery is built to handle the toughest energy demands. Whether you’re off-grid, on the move, or preparing for power interruptions, this powerhouse is a game-changer.
Engineered with advanced LiFePO4 technology, it offers unmatched safety, faster charging, and up to 4,000 cycles for long-term, high-performance power use. It’s super compact for its capacity and easy to install–a reliable energy solution that won’t let you down.
Key Features & Benefits
-
Massive 300Ah Capacity
Delivers 3840Wh of energy–perfect for high-demand appliances and long-term use. -
Advanced LiFePO4 Technology
Provides better thermal stability, improved safety, and extended battery life. -
Built for High Loads
Handles a continuous 250A discharge and up to 800A for 5 seconds, ideal for appliances with heavy startup loads. -
Fast & Flexible Charging
Supports charging currents up to 250A for reduced downtime. -
Expandable Power
Supports series and parallel expansions of up to 6 batteries. -
Long Cycle Life
Offers over 4,000 charge cycles, reducing replacement costs. -
Built Tough & Travels Well
Housed in a durable ABS plastic case with side handles for easier transport and setup
Ideal For:
- Caravans, RVs, and motorhomes
- Off-grid homes or cabins
- Camping and outdoor setups
- Emergency backup systems
- Solar energy storage
SPECIFICATIONS
| Nominal Voltage: | 12.8V |
| Nominal Capacity: | 300Ah |
| Charging Voltage: | 14.6V |
| Rated Energy: | 3840Wh |
| Charge Method: | CC/CV |
| Discharge Cut-off Voltage: | 10V |
| Charger: | 14.6V 100A |
| Standard Charge Current: | 100A |
| Max. Charging Current: | 250A |
| Standard Discharge Current: | 250A |
| Max. Continuous Discharge Current: | 250A |
| Max. Discharge Current 5 sec: | 800A |
| Approx Life Cycles: | 4000 |
| Working Temperature Range: | Charge: 0°C to 45°C Discharge: -25°C to 60°C |
| Storage Temperature: | -10°C to 50°C |
| Battery Cells: | Prismatic |
| Bolt Type: | Hexagon |
| Bolt Material: | Iron nickel-plated |
| Series Connection: | No |
| Parallel Connection: | Yes, Max 4 batteries |
| Absorption Voltage: | 14.4V |
| Float Voltage: | 13.6V |
| Overcharge Protection: | 14.6V |
| Overcharge Recovery: | 14.2V |
| Overdischarge Protection: | 11.2V |
| Overdischarge Recovery: | 11.6V |
| Cell Grouping: | 4S3P |
| Case Material: | ABS Plastic |
| Warranty in Years: | 2 |
DIMENSIONS & WEIGHT
| Dimensions: | L520 x W269 x H220 mm Side handles approx. 20-30mm each side |
| Weight: | 29 kg |
WHAT'S IN THE BOX
| 1 x | Lithium Battery |
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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 |
Reliable Power, Real Reviews
Mark M.
Gentrax Lithium Battery –Battery was delivered very quickly and running the fridge in the back of the Ute well. No issues and will be considering a couple of the 200ah for our caravan. Great Product at a fantastic price.
Thisal
No dramas here
I haven't had a chance to use it but I believe it will work as it supposed to. It got delivered quickly and looks solid. Bit bigger than the normal battery but It fits in a large battery box without any problem.
Stuart
Would purchase again
Purchased a 200 amp hour gentrax lithium battery to run a fridge and eletric trolling motor in my boat. So far very happy with it. I noticed that it held its 100% charge even after not in use for 1 month.
chelsea l
They work just fine. Recommended
Len K
ok so far, haven't really tested it yet
Pamela K
Seems to hold charge. I haven't had them installed
Seems to hold charge. I haven't had them installed yet so I don't really know how efficient they are or how they will age but the price was good and the weight is much better than the old AGM battery.
Jeff Cron
Good price and arrived promptly.
Arrived promptly, good communications. Have not fully tested yet but looks good.
Anthony
Great battery - works as promised! Quick delivery
Bought this to compliment an off-grid setup on a farm. Tested and it ran my kitchen fridge at home for 2 days and was still showing 13.3v - definitely worth buying.
They even followed up to make sure I was happy with the product - good work Gentrax.
Colin Kirk
Great battery
Very happy with this battery, have had it setup in the rear of my vehicle for the past couple of weeks now.
It hasn’t missed a beat running 24/7 would purchase again.
Westo2
Battery lithium
Great service, battery doing it's job perfectly highly recommend
Scott P
Great Battery- Great Price
The Gentrax 200ah lithium batteries are a direct replacement for the original 100ah batteries in my caravan, doubling my capacity for little extra space.
Alan
Excellent value 2nd battery for 4WD camper. Speedy delivery to our front door. Too soon to speak to longevity but it is very light and seems to be good quality.
All Gentrax LiFePO4 batteries are built with advanced technology for longer lifespan, stable output, and enhanced safety—perfect for RVs, camping, and emergency backup.
Included in the box
Built to Last
Backed by smart BMS protection and high-efficiency LiFePO4cells, our batteries deliver dependable energy you can count on.
How long will a Gentrax LiFePO4 battery last in real use?
Gentrax LiFePO4 batteries are designed to last over 2,000 cycles. Meaning, you can charge and discharge them daily for years without losing capacity—that’s up to 10 times longer than traditional lead-acid batteries.
What does the built-in BMS in Gentrax LiFePO4 Batteries do?
The built-in Battery Management System (BMS) protects the battery from overcharging, over-discharging, overheating, and short circuits. It also balances the cells to ensure consistent performance.
What are the advantages of using prismatic cells?
Prismatic cells offer better stability, safety, and space efficiency compared to cylindrical cells, resulting in a longer cycle life and more consistent power delivery.
What devices or setups is the Gentrax 300Ah LiFePO4 Battery best suited for?
This battery is ideal for RVs, off-grid cabins, camping setups, solar storage systems, and as a reliable backup power source for homes or small businesses.
How long does a full charge typically last with normal usage?
Depending on your power consumption, this 300Ah battery can run small appliances and electronics for several hours to even days. It’s designed for long runtimes, faster charging, and over 4,000 charge cycles. It’s ideal for everything from weekend camping trips to off-grid living.
Does this require special maintenance?
Not at all. The Gentrax 300Ah LiFePO4 Battery is low-maintenance, with a built-in Battery Management System (BMS) that helps regulate performance and protects against potential issues like overcharging and short circuits.
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