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Atem Power - 135AH - 12V AGM Deep Cycle Battery - Inc 12V 20A Battery Charger + Battery Box


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Introducing The 135Ah 12V AGM Deep Cycle Battery from Atem Power - including a 12V 20A DC To DC Battery Charger + Battery Box


Unleash the power of your adventures with the ATEM POWER 135Ah 12V AGM Deep Cycle Battery, accompanied by a 12V 20A DC to DC Battery Charger, and a robust Battery Box! Engineered with precision, this AGM battery boasts a pure lead grip and AGM separator, ensuring unparalleled conductivity and electrolyte absorption. Say goodbye to weather concerns – it's all-weather resistant and built to handle extreme temperatures. Recharging is a breeze with faster technology and built-in protection, offering reliable performance wherever your journey takes you.

But that's not all – this incredible bundle includes a high-performance DC to DC Battery Charger. With dual input power from your vehicle or solar panels, it maximises energy use while adapting to your vehicle's smart alternator. The advanced charging algorithm ensures an efficient, multi-stage charging process, extending the lifespan of your batteries. Worried about compatibility? Don't be! This charger works seamlessly with Lead Acid, AGM, Gel, Calcium, and LiFePO4 batteries. Convenient, smart, and powerful – get ready for an adventure like never before. Upgrade to ATEM POWER and take control of your off-grid experience.



  • Battery-Anti-Leakage Construction: Sealed structure, ABS intrusion-safe body and factory sealed lid ensure no leakage of any caustic materials.
  • Battery-Weather & Temperature Resistant: All-weatherproof and able to work at temperatures down to -40 degrees Fahrenheit.
  • Battery-Longer Lifespan: This Deep Cycle Battery is low self-discharge, less prone to sulfation and excellent water retention which can be kept out of operation for a much longer period while preserving the perfect conductivity.
  • Battery-User Friendly Design: Built-in straps offer excellent carrying and mounting experience and ensure convenience during daily use.
  • Charger-Dual Input Power: The charger utilises the DC source or solar power, ensuring a stable and consistent energy source for your auxiliary battery.
  • Charger-Advanced Charging Algorithm: The smart multi-stage charging process optimally charges your batteries, delivering them to their peak levels for extended use.
  • Charger-Smart Protection: Safeguard your device against solar input overload, over-charge, short circuit, over-temperature, thermal load, and reverse polarity.
  • Charger-Battery Re-selection Made Easy: Switch batteries effortlessly! The ATEM POWER DC to DC charger allows quick re-selection by long-pressing "POWER."
  • Charger-Convenient and Intuitive: The LED indicator provides real-time charging stage updates, while the integrated memory function enhances charging convenience.
  • Charger-Please note: Always refer to the wiring diagram in this listing for the latest wiring setup of the product as the user manual might be for previous version.



  • 135Ah Battery
  • Brand: ATEM POWER
  • Rated capacity (10 hour rate): 135Ah
  • Voltage: 12V
  • Nominal voltage: 12V
  • Float charge (Constant Voltage): Voltage: 13.5 - 13.8V at 25°C (77°F)
  • Cycle Charge (Constant Voltage): Initial Charging Current less than 25A | Voltage 14.4-15.0V at 25°C (77°F)
  • Max Initial Current: Less than 33.75A
  • Max discharge current: 600A (5s) at 25°C (77°F)
  • Self-discharge capacity: 3 Months = 91% | >6 Months = 82% | >12 Months = 64%
  • Capacity affected by temperature: 40°C = 102% | 25°C = 100% | 0°C = 85% | -15°C = 65
  • Internal Resistance: Approx. 6.0mΩ
  • Package Dimensions: 385x220x270mmmm
  • Gross Weight: 27.85kg
  • Battery Box
  • Colour: Black
  • Input voltage: 12-24 V DC
  • Anderson Plugs: 50A
  • 5V USB Ports: 1A/2.1A
  • CIG Socket: 12V
  • Circuit Breaker: 10A
  • Package Dimensions: 470x255x290mm
  • Gross Weight: 2kg
  • 20A DC to DC Charger
  • Type: Multi Stage
  • Input:
  • DC Battery: 13.0~16.0Volts
  • Solar Input: 16.0-25.0 Volts
  • Output/Charging Voltage: 14.4~15.4 Volts(Stops charging when alternator output or vehicle battery below 12.5 volts)
  • Output Current:
  • DC Output: 20A
  • Solar Output: 20A
  • Min. Solar Input Current:
  • 5A
  • Minimum Start Voltage: 2.5 Volts-For battery being charged
  • Soft Start: Yes
  • Operational Temperature: -10℃~45℃
  • Soft Charge Current: DCDS20@20A
  • Bulk Charge Voltage: 14.7V(AGM/Gel)14.4V(Lead Acid)15.4V(Calcium)14.4V(LiFePO4)
  • Absorption: Constant voltage with automatic amperage control
  • Equalisation: Automatic
  • Float Charge Voltage: 13.5V(AGM/Gel)13.5V(Lead Acid)13.5V(Calcium)
  • Float Charge Current: 100mA
  • Battery Range: 60 to 600Ah
  • 0-1 Metres: 12AWG
  • 1-5 Metres: 8 AWG
  • 5 Metres+: 6 AWG
  • Package Dimensions: 316x240x63mm
  • Gross Weight: 1.25kg


What you receive in this package

  • 1 x AGM Battery
  • 1 x Battery Box
  • 1 x Fastening Strap
  • 1 x Internal Bracket
  • 1x 20A DC-DC Charger



  • 1 Year Warranty For Battery & Charger
  • 2 Years Warranty For Battery Box

User Manual


General Delivery Timeframes:

Delivery timeframes will vary dependent on your location and the items you've ordered. 

In order to get your purchase to you as promptly and safely as possible we utilise a number of trusted and reputable courier services such as Australia Post, Star Track Express, Big Post and TNT Express.

Deliveries are sent during normal business hours, Monday to Friday and can take between 2 to 8 business days to receive, pending on your location, time of year and courier. Purchases made on weekends and public holidays will be processed on the next business day. We send all items via registered courier with tracking.

In some cases where the address is based in the more remote areas of Australia this may take longer. Please note delivery time frames are approximate and are subject to variables outside of our control.


Shipping Costs:

Shipping is FREE on all orders to customers within Australia for San Hima and Ecoflow products.


Large/bulky items (roof top tents / swags etc) will incur a flat shipping fee of $85.

All other deliveries will incur a flat shipping fee of $15.


If your delivery address is in a regional or remote location, we recommend shipping to the nearest depot as the most affordable option.

Rural parts within the Northern Territory, Western Australia and North Queensland have seen shipping prices double, triple and even quadruple within the last few years.

For this reason, there may be times where the shipping price listed during checkout is not accurate and additional fees will be charged. It is the customers responsibility to pay these additional shipping fees or we may be forced to cancel your order.

Again, these additional shipping charges only apply to remote and rural areas. if you have any concerns about the shipping price to your address, please contact us before ordering.


Home Delivery (Bulky Items):

This service is generally for products over 40kg in weight, as it is a requirement for these products to be palletised for delivery.

This service utilises power tailgates with two-man crews or crane trucks when required and this is included in the quoted price.

The receiver will be contacted prior to delivery to arrange a suitable delivery date and time. Deliveries are scheduled for either an AM or PM slot on any given day.

Delivery is to front car port, driveway, doorstep or wherever practical depending upon site access. Drivers are not permitted to move item(s) within the residence or around the property due to OHS reasons.

This service assumes reasonable and safe access to the site is available. Overhanging trees, steep driveways, unsealed driveways, narrow driveways or streets or an unforeseen obstruction may deem the delivery unavailable.

Shipping is FAST Australia wide. Read our full Shipping Policy here

Want to know about our Returns Policy? Read more here

We get it... you've got loads of choice when it comes to online retailers these days. The market is crowded, it can be hard to know who to trust and who to buy from. 

We know that once you buy from New Age Camping, you'll stick with us for the long-haul because...

  1. We're 100% Australian owned and based in New South Wales. We aren't operated from afar. We deeply understand you our customer, the environment you operate in and what you need to follow your passion.
  2. We only sell tried and tested products. We sell a wide variety of products and brands. What unites them all is that they are established brands on the Australian market and sell products that have been tested and proven in Australia. You can rest easy that you aren't getting cheap junk from overseas masquerading as local products. 
  3. We are secure. Our website's checkout uses 256-bit encryption to give you the highest level of personal security that an online retail store can provide. This is the same level of security many banks who you trust with your money use on their online portals.
  1. Easy Returns. We don't believe in hidden charges, so you won't find any of those on our checkout. We also know that shopping online carries risk for you the customer, so we offer 30 day free returns if your order isn't right. We want to protect you. Read more about our Shipping here and our Returns policy here .
  2. Best Prices. If you find a better price on any of our products and you can show us that price. We'll beat it. Simple. Just get in touch here and let us know. Read more about our price match guarantee here