Enerdrive B-TEC 125Ah Lithium Battery & 40A DC2DC Charger Bundle


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Product Description

Enerdrive B-TEC 125Ah Lithium Battery & Charger Bundle, 5 Year Warranty. Introducing the Enerdrive B-TEC 125Ah Lithium Battery & 40A DC2DC Charger Bundle, your ultimate solution for reliable power management in a variety of applications. This bundle includes the EPL-125BT-12V Enerdrive B-TEC 125Ah Lithium Battery and the EN3DC40+ Enerdrive 40A DC to DC Battery Charger, offering unparalleled performance and convenience.

Bundle Includes: 

  • EPL-125BT-12V - Enerdrive B-TEC 125Ah Lithium Battery
  • EN3DC40+ - Enerdrive 40A DC to DC Battery Charger

Optional AC Charger:

  • EN31220 - Enerdrive 20A AC Battery Charger
  • EN31240 - Enerdrive 40A AC Battery Charger

Enerdrive B-TEC 125Ah Lithium Battery (EPL-125BT-12V)

Experience the future of power with the Enerdrive B-TEC 125Ah Lithium Battery. Engineered with cutting-edge Smart Phone Monitoring Technology, this battery allows you to effortlessly monitor vital information such as battery capacity, voltage, state of charge, and more, right from your smartphone or tablet. With its advanced Battery Management System (BMS), the Enerdrive B-TEC ensures optimal performance while safeguarding against overcharge, over-discharge, and other potential risks.

Size and weight savings are substantial with the B-TEC battery, offering 60% more usable power compared to traditional lead acid batteries, while being nearly 50% lighter and 30% smaller. Whether it's for camper trailers, 4WDs, caravans, or marine applications, the Enerdrive B-TEC is the epitome of reliability and efficiency.

Enerdrive 40A DC to DC Battery Charger (EN3DC40+)

The Enerdrive 40A DC to DC Battery Charger is designed to meet the rugged demands of Australian conditions, providing multiple source charging for DC systems. With its fully automatic multistage charging capability, this charger can efficiently charge your battery bank from either an alternator or solar power, thanks to the built-in Maximum Power Point Tracking (MPPT) Solar Controller. Its intelligent design ensures seamless transition between different charging sources without the need for external relays.

Featuring two independent DC inputs for engine and solar charging, along with M6 screw terminals for secure connections, the Enerdrive DC2DC Charger offers versatility and reliability. Its multistage charging process maximizes battery life and performance, while the smart charging feature adjusts output based on connected loads, ensuring optimal operation at all times.

Optional AC Charger:

Choose between the Enerdrive 20A AC Battery Charger (EN31220) or the Enerdrive 40A AC Battery Charger (EN31240) to complement your setup. These fully automatic chargers feature multistage smart charging technology, programmable settings for different battery types, and wide AC input range for versatile compatibility. With a 5-year warranty and unmatched customer support, Enerdrive is your trusted partner for all your power management needs.

Unlock the potential of your power system with the Enerdrive B-TEC 125Ah Lithium Battery & 40A DC2DC Charger Bundle, delivering reliability, efficiency, and peace of mind wherever your adventures take you.

Bundles EPL-125BT-12V EN3DC40+ EN31220 EN31240
K-125-03 * * *  
K-125-04 * *   *
K-125-05 * *    

Battery Information:

Enerdrive Product Manual

40A DC Charger Information:

Enerdrive Product Manual

AC Charger Information:

Enerdrive Product Manual


SKU K-125-1

Brand Enerdrive

GTIN 9342616020708

Warranty Period: 5 Years

Product Category Batteries

Battery Voltage 12V

Amp Hours (ah) 125

Battery Length (mm) 318

Battery Width (mm) 165

Battery Height (mm) 215

Battery Weight (kg) 15.5

DC Charger Output Current Rating (Amps) 40

Cycle Life (DOD – 80% under controlled conditions) ≥ 2000 Cycles

Battery Charge Temperature 0 ̴ 45°C

Normal Charge Voltage CV/CC* 14.20 ̴ 14.60V

Standby (Float) Voltage 13.50 ̴ 13.80V

Maximum Charge Current 60A @ 25°C for 30mins

Recommended Charge Current for Maximum Life 20~60A

Battery Discharge Temperature -20 ̴ 60°C

Battery Output Voltage Range 11.00 ̴ 14.60V

Maximum Discharge Current 100A @ 25°C ± 5°C for 30mins

Pulse Discharge Current 450A for 1.0s

Discharge Cut-off Voltage ≤11.20V

Over-Charge Protection Per Cell 3.90V ± 0.03V

Over-Charge Release Per Cell 3.60V ± 0.05V

Over-Charge Release Method Discharge below release voltage

Over-discharge Protection Per Cell 2.80V ± 0.05V

Over-discharge Release Per Cell 3.20V ± 0.05V

Over-discharge Release Method Apply Charge/Voltage ≥12.8V

Discharge Over Current 110A for 30s – 450A for 1s

Battery Manual Reset Button Yes

Protection Reset Time Approx 10s Auto Release

Over Current Release Method Disconnect Load

Battery Charge Over Temperature Protection to 55°C ± 5°C, Release at 45°C ± 5°C

Battery Discharge Over Temperature Protection to 65°C ± 5°C, Release at 50°C ± 5°C

Short Circuit Protection Auto release after 5s

Case Construction Hi Impact ABS Plastic

Temperature & Humidity Range ≤ 30 days -20°C ̴ 60°C, 5 ̴ 75% RH, ≥ 90 days -10°C ̴ 45°C, 5 ̴ 75% RH

NOTE For any installation that requires additional wiring, we recommend you engage a licensed auto electrician.

Dimensions 242 x 172 x 74mm (DC Charger)


Enerdrive B-TEC Lithium Batteries - Part 1 - Application


Enerdrive B-TEC Lithium Batteries - Part 2 - Specifications


Enerdrive B-TEC Lithium Batteries - Part 3 - Installation


Enerdrive B-TEC Lithium Batteries - Part 4 - Settings


Enerdrive B-TEC Lithium Batteries - Part 5 - Operation


Enerdrive B-TEC Lithium Batteries - Part 6 - Fault Finding


The Best Caravan Battery?


What Will My Camping Battery Run?


Expanding Your Enerdrive B-TEC Capacity: Enerdrive Batteries in Parallel


Introducing The Enerdrive Battery Charger Range


How To: Resetting A Flat Enerdrive BTEC or eLITE Battery


EN3DC40+ Enerdrive Battery Charger Run Through


All about the 40A Enerdrive AC Charger


Customer Reviews

Quality product and service Review by
Easy to install and use. Good quality gear
(Posted on 13 February 2023)
Good service and quality product Review by
Prompt delivery for our major upgrade on an older Jayco caravan. The products came with excellent instruction manuals in clear English, with clear wiring diagrams. Currently part way through installation so not yet fully tested.
(Posted on 12 June 2022)
Quality Package Review by
Great product, easy to use app which quickly connects showing battery health and charge/discharge status. Charger was also impressive with easy setup and functional display. I will need more solar panels to get the charger up to it's max potential. (Disclaimer: Current Solar Panels already on vehicle on not purchased from My Generator)
(Posted on 10 June 2021)
Good stuff, I'm happy. Review by
All installed in the camper, works perfectly. Time will be the test, of course. The manuals were a bit of a letdown for a premium product - e.g. the inconsistency on the float voltage in the battery manual, and the lack of clarity about how to set up if you don't have an ignition sense wire in the DC2DC manual.
(Posted on 15 January 2021)

View All Reviews

Quality product Review by
Great weight savings for a off-road touring set up. Well finished products, easy to install and easy to use. Built in Bluetooth battery monitor works well and reduces need for extra components.
(Posted on 23 October 2019)

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Product Q&A

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  • Hi, just wondering if you are able to select which the charger will draw from first? Eg. Solar over alternator. If so will it still use the alternator if more is needed?

    Hi Isaac,

    There are provisions to manually override the charging source from alternator to solar.

    However Enerdrive state: If Manual Override Mode is used and left on there is a risk of flattening the start battery. The preferred method is to use the automatic override method by connecting the ignition source to the ignition terminal of the DC2DC+ charger.

  • HI, is the latest model that will charge up to 50amps?Cheers

    Hi Marc,

    Yes this is the latest model from Enerdrive.

    It does have the capabilities of charging up to 50A!

  • Warranty . Thanks Rob Beer

    Hi Rob,

    The manufacturers warranty period for the Enerdrive 125aH lithium batteries is 2 years.

    As of 2020, all Enerdrive products now comes with a 5 Year Warranty. Any products purchased since 1st of January 2020, Enerdrive retrospectively applying the new 5 year warranty period.

  • Can I connect the Enerdrive B-tec Lithium Batteries in Parallel or in series?

    Hi there,

    You cannot connect any of the EnerdriveB-TEC batteries in series. You can however connect up to two only of the same size (ah) B-TEC batteries in Parallel. Enerdrive recommend that you only do this if you don't over load the max current of the internal BMS board from ONE OF THE BATTERIES.

    Example. If you connect 2 x 200Ah B-TEC batteries then do not draw more than 200A of DC current from that battery bank, as one (1) single 200Ah B-TEC battery is only capable of handling 200A DC.

    The main aim of connecting two (2) of the Enerdrive B-TEC batteries is not to increase your maximum DC current output, but to double your storage capacity.

    Double the storage equals double the time you can stay powered up and off the grid.

    Be sure to always consult the Enerdrive user manuals for correct cable sizing, fuse sizing and wiring diagrams.

    We now sell an Enerdrive battery bundle with a parallel kit - please CLICK HERE to find it.

  • Do you have a package with Enerdrive ePOWER B-TEC 125Ah Lithium Battery & 40A DC2DC Charger Pack and 1000w inverter?

    Hi There,

    At this time we do not currently have a bundle with the 125Ah battery and 1000W inverter, sorry.

  • I have a ctek 10 amp AC charger can I connect this to the input of the enerdrive DC to DC charger on a lithium battery set up?

    Hi There,

    The input on the DC DC charger should come from yoru alternator, or starter battery.

    We would not recommend connecting an AC charger to the input.

    You can contact Enerdrive for further tech assistance on 1300 851 535

  • Can I use the dc2dc charger with a 600 watt wind turbine. I have a battery bank of 4 120 AH 12 volt batteries.

    Hi There,

    This charger is not suitable for use with wind turbines sorry.

  • I have a Cub with a Projecta Smart charger. Can I replace my AGM battery with a lithium, and still run the same charger. I also run solar for charging. Will a swap work, or do i need to start again?

    Hi There

    You can repalce your AGM with a lithium battery and keep the charger only if your charger is capable of charging lithium batteries.

    Without a proper charger you will damage your battery.

  • I want to use a generator to run an Enerdrive Battery Charger like this - what is the recommended size generator?

    Hi Tom – the most popular size generator to run a battery charger like the Enerdrive ePower series is a 1000 Watt generator, such as the Yamaha EF1000iS. It is lightweight, fuel efficient and very quiet. 

    Note that the Enerdrive ePower 60Amp Charger model will draw a max 1050 Watts of power, in which case you might want to look at a 2000 Watt generator if you want to get the full power of of your 60Amp charger. Alternatively, the ePower charger series have a Current Control feature, which allows the user to adjust the current output - so for example you can dial back at 60Amp charger to still run off a 1000 Watt generator :)

    Many thanks.


For details relating to this product's warranty CLICK HERE


    For details relating to our delivery process CLICK HERE

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