Solar Panels
Solar Controllers
Batteries
Inverters
Mains Chargers
DC-DC Chargers
Cables/Accessories
Power Converters
Monitoring
Kits
Century 12V 140Ah AGM Deep Cycle Battery
Century 12V 140Ah AGM Deep Cycle Battery
Reliable maintenance-free AGM power designed for 4x4 dual battery systems, marine, and off-grid deep cycle systems
Regular price
$612.49
Availability:
In Stock at Century Warehouse
Allow up to 3 days before dispatch
View all products from Century
Guaranteed Safe and Secure Checkout
0
DESCRIPTION
Century 12V 140Ah AGM Deep Cycle Battery: Premium AGM Technology for Reliable Off-Grid Power
The Century 12V 140Ah AGM Deep Cycle Battery is engineered to deliver dependable energy storage for a wide range of mobile and stationary applications. Built using advanced Absorbed Glass Mat (AGM) technology, this battery offers a superior alternative to traditional flooded lead-acid units, providing a completely sealed, maintenance-free solution that eliminates the need for water top-ups and removes the risk of acid spills.
Designed to withstand the rigours of the Australian environment, this deep cycle battery is perfectly suited for use in 4x4 dual battery systems, recreational vehicles, marine vessels, and remote solar setups. Whether you are powering a 12V fridge, running LED lighting at a campsite, or maintaining essential systems on a boat, the Century 12V 140Ah AGM Deep Cycle Battery ensures consistent performance and longevity.
Advanced AGM Construction for Deep Cycling
At the core of this battery lies highly porous glass fibre mat separators that absorb and immobilise the electrolyte. This design not only prevents loose acid movement—making the battery spill-proof and suitable for multi-angle fitment (up to 90 degrees)—but also significantly lowers internal resistance. The result is a battery that accepts charge more efficiently and supports higher discharge currents compared to standard deep cycle options.
The robust grid design and high-quality active paste material ensure excellent recovery from deep discharges, allowing for repeated cycling without the rapid degradation seen in general-purpose batteries. This makes it an ideal choice for dual battery systems and auxiliary power where reliability is paramount.
Built Tough for Harsh Conditions
Mobile energy systems, particularly in 4x4s and caravans, are subject to intense vibration and physical stress. The Century 12V 140Ah AGM Deep Cycle Battery features a durable A.B.S. container (UL94-HB) and reinforced construction to combat vibration damage, a common cause of battery failure on corrugated roads. Heavy-duty integrated rope handles ensure safe lifting and easier installation into battery boxes or tight compartments.
Low Self-Discharge and Safe Storage
One of the standout benefits of this AGM range is its low self-discharge rate (less than 3% per month at 25°C). This characteristic is particularly beneficial for seasonal vehicles like boats or camper trailers that may sit idle for extended periods. With proper charging prior to storage, the battery retains its charge longer than conventional lead-acid equivalents, ensuring you are ready to go when the next adventure calls.
Key Features
- Maintenance-Free Design: Sealed construction eliminates water loss and acid leaks.
- Faster Recharging: Lower internal resistance allows for quicker energy replenishment from solar or DC-DC chargers.
- Vibration Resistance: Heavy-duty internal connections and ABS casing protect against impact and rough terrain.
- Deep Cycle Capability: Optimised for repeated discharge and recharge cycles in off-grid systems.
- Safe Installation: Includes M8 Insert terminals for secure, high-conductivity connections.
Application and Installation Notes
This battery is versatile enough for a variety of setups, including marine systems, solar energy storage, and recreational vehicles. For optimal lifespan, ensure your charging profile matches the AGM specifications.
Note: To protect the internal components from excessive heat and ensure warranty coverage, this deep cycle battery should not be mounted under the bonnet of a vehicle.
Power Your Adventure
Upgrade your energy system with the Century 12V 140Ah AGM Deep Cycle Battery. With its combination of safety, durability, and deep cycle efficiency, it provides the peace of mind required for remote travel and off-grid living.
SKU: C12-140XDA
SPECIFICATIONS
Specifications
| Cells | 6 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Weight (min / max) | Approx. 41.5–41.5 kg (±1.5%) | ||||||||
| Voltage | 12V | ||||||||
| Max. Discharge Current | 1400A (5 sec) | ||||||||
| Capacity | 140Ah@20hr-rate to 1.75V per cell @ 25°C | ||||||||
| Internal Resistance | Approx. 4mΩ | ||||||||
| Operating Temperature Range |
Discharge: -20°C~60°C Charge: 0°C~50°C Storage: -20°C~60°C |
||||||||
| Terminal | M8 Insert | ||||||||
| Container Material | A.B.S. (UL94-HB) | ||||||||
| Normal Operating Temperature Range | 25°C ± 5°C | ||||||||
| Max. Charging Current Limit | 40.2A | ||||||||
| Float Charging Voltage | 13.6 to 13.8 VDC/unit (Average at 25°C) | ||||||||
| Temperature Compensation (Float) | -3mV/°C/Cell | ||||||||
| Equalisation & Cycle Service | 14.6 to 14.8 VDC/unit (Average at 25°C) | ||||||||
| Temperature Compensation (Equalisation/Cycle) | -4mV/°C/Cell | ||||||||
| Self Discharge |
Century AGM batteries can be stored for up to 6 months at 25°C, after which recharging is recommended. Self-discharge rate less than 3% per month at 25°C. Please charge batteries before using and prior to long term storage. |
||||||||
| Note | Warranty void if mounted under bonnet | ||||||||
| Dimensions | 340 (L) x 173 (W) x 280 (H) x 287 (TH) (mm) (±2.0mm) | ||||||||
| Discharge Current VS Discharge Voltage |
|
||||||||
| Storage Charging Recommendation | If stored at 25°C, charge batteries at least once every six months | ||||||||
| Charging Method | Constant Voltage -0.2Cx2h+2.4~2.45V/Cellx24h, Max.Current 0.3CA | ||||||||
| Notes | ALL MENTIONED VALUES ARE AVERAGE VALUES. |
| SKU: | C12-140XDA |
| Barcode: | 9313857331236 |
| Model #: | C12-140XDA |
| MPN: | C12-140XDA |
WARRANTY
Century Warranty Policy
Century batteries are supplied with a warranty against defects for the period of time and application displayed on the product face and top labels.
Warranty Lengths by Model Range
Warranty periods vary depending on the Century battery range, model and application. The warranty period shown on the battery label should always be used as the final reference.
| Century Battery Range | Warranty Length | Application / Notes |
|---|---|---|
| Century AGM Deep Cycle | 36 months | Applies to the current Century AGM Deep Cycle range where labelled accordingly. |
| Century GEL Deep Cycle | 12 months | Applies to Century GEL Deep Cycle batteries where labelled accordingly. |
| Century Marine Pro | 24 months | Applies to the standard Century Marine Pro marine battery range where labelled accordingly. |
| Century Marine Pro Cruiser | 12 months | Applies to Century Marine Pro Cruiser batteries where labelled accordingly. |
| Century Dual Force+ |
Private use: 24 months starting / 12 months cycling Commercial use: 12 months starting / 6 months cycling |
Dual warranty applies for starting and cycling applications. Warranty is void for taxi use and vehicles fitted with ISS systems. |
Making a Warranty Claim
If Century's testing determines the battery is defective, Century will replace it. However, the costs of delivering the battery to the warranty location, collecting it, and collecting any replacement battery are the customer's responsibility.
The claim must be made within the warranty period listed on top of the battery. Dated proof of purchase is required. The warranty period for a replacement battery starts on the original purchase date of the defective battery it replaces.
To make a claim, call 1300 361 161.
What This Warranty Does Not Cover
This warranty does not cover defects caused by normal wear, abuse, damage, neglect, overcharging, undercharging, incorrect application, incorrect installation, or incorrect maintenance.
- A flat battery
- Normal wear and tear
- Physical damage
- Undercharging, including sulphation
- Incorrect application
- Negligence before or during use
- Overcharging
- Spillage from overfilling
- Modifications to the battery
- Failure arising from the addition of fluids other than water
- Batteries used for motorsport or racing activities
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Century goods come with guarantees that cannot be excluded under the Australian Consumer Law. Customers are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. Customers are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Private Use Statement
Private use refers to a vehicle used for private needs, as opposed to business use. These vehicles are generally defined as having only four wheels and not being used to carry passengers or goods for monetary purposes.
