Gentrax 12V 300Ah Lithium LiFePO4 Battery
About Gentrax 12V 300Ah Lithium LiFePO4 Battery
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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What cables should I use to connect the batteries in series or parallel?
The specifications of the selected cables are determined according to the actual charging and discharging current. The overcurrent value varies from different cables. For example, the cross-sectional area of the conductor is 10mm2, and the cable can pass 50A current. The cross-sectional area of the conductor is 25mm2, and the cable can pass 100A current, etc.
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Do I need a battery balancer when running in series to 48V?
A battery balancer can better protect the battery and maintain voltage balance, so it's a good choice.
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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 300Ah LiFePO₄ battery last when fully charged?
The 300 Ah battery is built for exceptional performance and durability, with over 4,000 charge cycles—up to ten times longer than traditional lead-acid batteries. Depending on your power needs, this high-capacity LiFePO₄ battery can run small devices and appliances for hours or even days. It is ideal for weekend camping, off-grid living, RVs, and marine applications due to its long runtimes, quick charging, and reliable performance.
What size charger for a 300 Ah lithium battery?
For this lithium LiFePO₄ battery, the 100–200A charger is the ideal choice. When charging from a car, it is recommended to use a high-end DC to DC charger designed for LiFePO₄ chemistry. Choose a solar charge controller that works with a 12V 300Ah LiFePO₄ lithium battery and has programmable voltage settings.
Are Gentrax 300Ah LiFePO₄ batteries safe indoors?
Gentrax 300Ah LiFePO₄ batteries are safe to use indoors as long as they are installed and used according to our user manual. Unlike lead-acid batteries, LiFePO₄ batteries don't release any toxic fumes, have a low risk of thermal runaway, and have an integrated Battery Management System (BMS) that prevents short circuits, overcharging, overdischarging, and overheating. As a result, when stored away from extreme heat or moisture, a LiFePO₄ battery 300 Ah is a great option for off-grid homes, RVs, marine cabins, and indoor backup power systems.
What devices or setups is the 300 Ah battery best used 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 to charge this 300 Ah LiFePO₄ battery?
The output of the charger determines this. A 300Ah battery can take about three hours to fully charge using a specialized LiFePO₄ charger with a 100A output, but a 200A charger can cut that time down to about one and a half hours. When off the grid, you can also recharge the battery using compatible generators (link to https://gentrax.com.au/collections/generators) or pair it with solar panels of the right size.
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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