TAC Energy Unveils "Bedrock 150" Cell, Redefining Safety Standards for 12V Systems

February 28, 2026

Core Summary (Lead)

February 28, 2026, Beijing — TAC Energy (TAC) today officially launched its next-generation 150Ah, 12.8V Lithium Iron Phosphate (LFP) cell, codenamed "Bedrock 150". Engineered specifically to replace traditional lead-acid batteries, this product champions "zero-thermal-runaway" safety and a "10,000-cycle" lifespan. It aims to address the critical safety concerns stemming from cell thermal runaway in applications such as RVs, portable power stations, and residential energy storage systems. The cell has passed the stringent nail penetration test conducted by China's national authoritative institution and is now in mass production.

I. Core Product Specifications & Technological Highlights

Parameter	Specification	Industry Benchmark (Traditional 280Ah Cell)	Value Proposition
Nominal Voltage	12.8V	3.2V (requires 4S combination)	Single-Cell Solution: A single cell constitutes a complete 12V system, eliminating the risks of overcharge/discharge caused by cell inconsistency in external series/parallel configurations.
Nominal Capacity	150Ah	280Ah	Sweet-Spot Capacity: Energy density reaches 1920Wh, with a weight of only ~1.4kg—70% lighter than a lead-acid battery of equivalent capacity—perfectly fitting standard 12V battery compartments.
Cycle Life	8,000 cycles (@80% DoD)	3,000-6,000 cycles	Ultra-Long Service Life: Under 80% Depth of Discharge (DoD), theoretical lifespan exceeds 15 years, far surpassing the 500-cycle average of lead-acid batteries.
Safety Test	Nail Penetration: No Fire, Overcharge: No Explosion	Partially passes	Inherent Safety: Utilizing the LFP chemistry with a thermal runaway threshold above 800°C. In a live demonstration, an 8mm steel needle pierced the cell, resulting in a surface temperature of only 51.1°C, with no flame or smoke.
Rate Capability	3C Continuous Discharge, 5C Pulse	1C-2C	Powerful Performance: Maximum continuous discharge current reaches 450A, capable of instantly powering high-wattage inverters or RV air conditioners, meeting the demands of a "mobile home."

II. Technological Breakthrough: Why a "12.8V Monolithic Cell"?

While the industry largely pursues high-capacity (e.g., 280Ah, 314Ah) 3.2V cells, TAC's "Bedrock 150" adopts the 12.8V monolithic large cell approach, tackling two major industry pain points:

Eliminates the "Barrel Effect": A traditional 12V battery is composed of four 3.2V cells in series. Performance degrades sharply if any single cell ages or its internal resistance increases. The "Bedrock 150," as a monolithic cell, employs a Tabless Design internally, featuring extremely short current paths and an internal resistance as low as 0.15mΩ, fundamentally eradicating series inconsistency.
Simplifies BMS (Battery Management System): Eliminates the need for complex 4S balancing circuits. The BMS only manages a single voltage point, reducing failure rates by approximately 80% and rendering maintenance costs negligible.

III. Target Applications & Market Positioning

This cell is not designed for electric vehicles but precisely targets the blue-ocean market of the "12V Ecosystem":

RV & Marine Energy Storage: Direct drop-in replacement for bulky AGM lead-acid batteries, enabling "plug-and-play" installation and improving space utilization by up to 50%.
High-End Portable Power Stations: Serves as the core cell, supporting outputs above 2000W to power devices like induction cooktops and power tools.
Telecom Base Station Backup: Maintains over 95% discharge efficiency across a wide temperature range (-20°C to 60°C), ensuring communication reliability under extreme weather conditions.

IV. Authoritative Testing & Industry Certification

The product has passed certifications including GB 38031-2020 "Safety Requirements for Traction Battery of Electric Vehicle" and UL 1642. In a live-streamed test conducted by a third-party agency (CATARC), the cell underwent the following extreme challenges:

Nail Penetration Test: Steel needle penetration resulted in a steady voltage drop with no thermal propagation.
Overcharge Test: Charged to 20V (far exceeding the 14.6V cut-off voltage), the cell's vent activated normally, the electrolyte solidified, and no combustion occurred.
Seawater Immersion: After 72 hours in 3.5% saline solution, insulation resistance remained above 100MΩ.