12V 400AH BATTERY – SELF-HEATING (DUAL TECHNOLOGY)
SKU: 14879568667

12V 400AH BATTERY – SELF-HEATING (DUAL TECHNOLOGY)

Sale price$2019.59 Regular price$2243.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

12V 400AH BATTERY – SELF-HEATING (DUAL TECHNOLOGY)12V 400AH BATTERY SELF HEATING (DUAL TECHNOLOGY) Description: Volthium's 12V400AH LiFePO4 ABS battery in 8D format is manufactured specifically for boats, sailboats, motorized vehicles and industrial applications. The Volthium 12V400AH batteries, with or without integrated heating system, is ABYC compliant, including clause E 13, regarding communication. Indeed, the battery integrates the communication allowing the customer to define an audible and

12V 400AH BATTERY – SELF-HEATING (DUAL TECHNOLOGY)

Description:

Volthium's 12V400AH LiFePO4 ABS battery in 8D format is manufactured specifically for boats, sailboats, motorized vehicles and industrial applications.

The Volthium 12V400AH batteries, with or without integrated heating system, is ABYC compliant, including clause E-13, regarding communication.

Indeed, the battery integrates the communication allowing the customer to define an audible and visual alert before the batteries fall into protection. Using their cell phone and the Volthium Monitor application, the customer will be able to set an alert for a specific %SOC, of their choice, in addition to setting a warning alert for high temperature, and low temperature. This feature is available on multiple Volthium Batteries. In addition, the 12V400AH batteries are CSA UL1973 certified.

The battery is designed for energy storage banks ranging from 5kWh to 20 kWh.

These batteries have the particularity to have an accessible and reserved chamber for the BMS.

This makes them repairable in case of need, and allows to extend the life of the cells by limiting the transmission of heat to them. In addition, a private BMS room increases the usable temperature range of these batteries.

This lithium battery has an integrated cooling system that allows the heat to escape from the battery via its conductive aluminum plate. Once again, the heat sink further increases the usable temperature range,
while promoting better performance of the integrated BMS. In addition, an additional cooling system can be attached.
Another Volthium exclusivity.

This new generation of batteries is also equipped with a stainless steel 304 UL button, which allows to deactivate the discharge, while leaving the recharge authorized. Extremely, practical when the customer wants to leave the batteries connected to the solar system during storage, while eliminating the fear that they will be flattened by parasitic discharges.

This brand new battery, whose casing is exclusive to Volthium has 2x RJ45 ports, whose pins are gold plated, allowing communication on the RS485 protocol. This connector is also used to transmit the internal information of the batteries to the Victron Venus OS environment (on their VE.CAN protocol).

To be able to make communication working between Volthium batteries and Victron environment, simply get the Volthium HUB accessory VE.CAN ($), another exclusive development of Volthium.

In addition, the RJ45 connector allows you to add the Volthium bluetooth transmitter, which can handle up to 4 batteries when paired with the HUB.

Not only is this LiFePO4 battery resistant to vibrations, but it has a discharge range superior to the competition. In fact, this battery can be discharged down to -30 degrees, instead of -20 degrees for the competition. And if you choose the self-heating option, it can be recharged down to -40 degrees. This innovation is possible because the cells in Volthium batteries come from the automotive industry.

Exclusive Double Self-Heating Technology

The battery is equipped with two internal heating systems. The traditional intelligent system is activated when you apply a recharge to the battery when it is below zero. The second system, called manual, is activated when you apply a voltage to the positive H+ connector (M6) of the battery. This heating system, called manual, is not automated. If you connect the positive terminal of the battery (M8) to the H+ connector (M6) of the battery with a small piece of cable, it will be triggered using the energy of the battery.

  • Attention, it is necessary to use a timer to avoid forgetting the heating in function
  • The manual heating system is reserved for professionals and works down to -30 only.

10 years warranty, useful life around 15 years and more.

Average operation beyond 6000 cycles.

Certifications: Complete assembly: UL1973 & ABYC | Cells UL1642, UL1973, IEC62619, IEC62660, CSA UL9540A.

BMS:

The core of the BMS is produced by the American company Texas Intrument. This manufacturer of BMS microcontrollers is recognized worldwide in the field of electric automobiles, in addition to its long-standing collaboration with NASA and the U.S. Army. The programming and communication protocols are entirely developed by our engineers in Quebec.

Cells :

The quality of LFP cells is paramount. Indeed, they are the ones that will ensure you have a durable product and whose long-term performances will be faithful.

The 12V ABS solar storage batteries are equipped with GRADE A+ prismatic cells, manufactured by Volkswagen Group.

Engineering:

True pillar, bringing together the strength of each of the parts integrating the product. Our engineering is distinguished by the selection of the best components in each industry, to obtain the best final product, scalable to future needs and impossible to compete with. The continuous integration of new communication protocols, combined with the custom development established for our clients, as well as the integration of technologies perfectly adapted to our Canadian environment, makes Volthium a reference in terms of design quality.

KEY FEATURES

  • CSA UL1973 certification for complete assembly
  • ABYC compliant
  • Dual self-heating system (Automatic / Intelligent + Manual)
  • Cooling system embedded
  • Access to the BMS (reserved room)
  • Switch to disable the discharge while keeping the charge possible
  • RS485 & Victron VE.CAN communication (RJ45 communication port; compatible with Volthium-Victron accessories)
  • Discharge possible down to -30 degrees
  • 10-year limited warranty
  • Continuous discharge current of 200A (250A for 75 min)
  • Peak 300A (3sec)
  • Up to 4 batteries in series (up to 51.2V)
  • Protection against cold charging
  • CANADA engineering
  • Weight of 104 pounds 

Watt Hours: 5120 Wh

INCLUDED

  • 1 X 12V 400AH Battery - Self-Heating (Dual Technology)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 14879568667

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 174 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
J. Randle
Lake Worth, US
★★★★★ 5
Love them
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I wear a size 11.5 in ladies shoe and these just barely fit. Butttt after I put lotion on my feet and slipped these on and left them on for about 30 mins. It left my feet really soft! They work great as intended. Would buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
V
Verified Purchase
Vonda Kioultzopoulos
Houston, US
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2025
T
Verified Purchase
Tessy
Houston, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
M
Verified Purchase
Ms. Mac
Lowell, US
★★★★★ 5
Just as good as paraffin wax
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
S
Verified Purchase
SKI
Charlottesville, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

recommand products