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Johnson Controls partners with Toshiba on new Li Titanate start-stop battery with SCiB cells

Johnson Controls’ 12-V Lithium Titanate battery will power advanced start-stop vehicles. Click to enlarge.

At the upcoming Detroit Auto Show, Johnson Controls will unveil a new 12V Lithium Titanate battery developed in collaboration with Toshiba for advanced start-stop applications. Toshiba is supplying its SCiB cells (earlier post) to Johnson Controls for the application.

The SCiB Lithium Titanate chemistry is effective at quickly recharging, works well in a wide range of temperatures and can be easily integrated into a vehicle’s 12-volt electrical system. Further, SCiB cells feature long life of more than 10,000 charge-discharge cycles. Toshiba, with SCiB, is the established market leader for Lithium Titanate systems.

With new oxide-based materials, SCiB provides a capacity recovery rate of more than 80% after 10,000 charge-discharge cycles. Source: Toshiba. Click to enlarge.
It takes only 6 minutes to charge SCiB from SOC 0% to 80% at room temperature by applying a large charging current. Source: Toshiba. Click to enlarge.

SCiB also has a structure that assures an extremely low incidence of internal short circuits, according to Toshiba. A high level of safety in preventing thermal runaway is assured even if an internal short circuit is forced.

Johnson Controls is pursuing opportunities to develop evolutionary low-voltage energy storage systems that will help our customers meet increasing fuel regulations at a lower cost than a hybrid or electric vehicle. In partnership with Toshiba, we are expanding our Lithium-ion product offerings to support the needs of our global customers.

—Lisa Bahash, group vice president and general manager Original Equipment, Johnson Controls Power Solutions

Toshiba is pleased to work with Johnson Controls to supply SCiB cells for this application. The opportunity to support global automakers with their goal of improving vehicle efficiency is an important part of our strategy and vision.

—Shun Egusa, general manager of Toshiba’s automotive business

Such an advanced start-stop system has two batteries. A 12-volt Absorbent Glass Mat (AGM) or Enhanced Flooded Battery (EFB), which will start the engine and supply power to accessories such as lights, navigation systems and radios. The 12-volt Lithium Titanate battery will primarily accept and store regenerative braking energy during vehicle deceleration, enabling greater power and load management capabilities.

With an Advanced Start-Stop system, drivers could save up to 8 percent every time they fill up their gas tank as the batteries enable the engine to shut off more frequently and for longer periods of time. This is also a great solution for our customers because the technology allows for greater fuel savings without major changes to the existing powertrain and electrical systems.

—Lisa Bahash

The 12-volt battery systems will be produced starting in 2018.



I've always wondered why we hadn't seen this long before now.


Start/stop and mild hybrids should have been done decades ago. I guess the old companies are just too entrench in the old technology and too frightened of the future to move forward in a more informed way. This battery is good, but not spectacular or likely to make a big difference. I guess we need baby steps in the US because of the fearful nature of the people and it's leaders.


Is this a 20 amp battery? Is it used in parallel with the existing 12 volt lead battery? Any more numbers asked the engineer?

If you can get the price low enough, how about just replacing the lead with a larger capacity Li battery. Why the complication of two batteries? Price?


Full hybrids have been done for over a decade. Unlike start/stop and mild hybrids they have absorbed a huge amount of government support for nominal oil savings.

Since their inception in 1999, hybrid vehicles (including ALL EVs) have saved less than one week’s worth of auto fuel usage and market penetration peaked at only 3.3 percent in 2013.

This is due in large part to the cost and weight of batteries. Batteries that are not yet ready for prime time.

I guess the government is just too enchanted with what new technology WILL eventual bring and are too wedded to the idea that if we just help people buy lots of EVs they will become affordable. Similar to the childish idea that if you pick up a calf each day, as it grows, you will be able to pick up a full grown steer in 15 years

This battery is good, not exciting or spectacular, but still likely to allow mild hybrids to make a bigger difference in relation to cost than the full hybrids; at least for the present.

We do need baby steps in the US because the fearful ignorance of our leaders.

Roger Pham

Two-battery system is necessary due to the need to run car alarm system and remote receiver all the time. If the car will not be used for a few weeks, only the AGM battery will be drained, which can be recharged and be good again. Not so for Lithium battery, which will be ruined if drained completely.


Tomorrow at the Detroit Auto Show, the 2017 Chevy Bolt EV may be announced. It will have a range of 200 miles and sell for $30,000. I told people that Tesla should watch out, well here it is.


Does 12V start-stop even make sense? 48 volt is where it should be.

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