They did not say it was a direct 12V replacement (somehow???) but they did not say it wasn’t either?
Wayne Gerdes -
CleanMPG - Oct. 6, 2012
The new Li-Ion is just 7.9 in x 7 in x 2.75 in (length x width x height) and weighs just 4.85 pounds!
DENSO has developed a Li-Ion battery that is said to improve the fuel economy of Stop/Start systems even further.
DENSO’s new battery pack allows the stop/start system to use more regenerative power than current conventional Pb-Acid and AGM 12V batteries. DENSO’s battery pack consists of a battery management unit and power supply control switch, as well as Li-Ion cells provided by a third-party source.
The OEM Li-Ion Battery Fuel Economy Story
DENSO’s new Li-Ion battery stores regenerated power and then supplies the stored regenerated power to the electrical and electronic components, such as the car navigation and audio systems. This reduces the power generation required by the alternator, which results in an overall load reduction on the engine and improves the vehicle’s fuel economy.
The new battery pack is air-cooled and does not require a dedicated battery cooling system. Because there is no need for auxiliary cooling components, this allows the battery to be lighter and more compact allowing automakers more design flexibility.
DENSO’s own Stop/Start System
DENSO has developed different types of starters to meet the specific needs of its customers for their stop/start systems, including the Advanced Engagement (AE) Starter, Permanently Engaged (PE) Starter, and Tandem Solenoid (TS) Starter.
DENSO also developed the Cold Storage (CS) Evaporator which increases the effectiveness of idle-stop, particularly at high temperatures that we have reported on previously.
Auto Start/Stop with A/C_is Tough
DENSO is currently supplying the Li-Ion battery, TS starter, and Cold Storage Evaporator for the current Suzuki Wagon R.
More on the Li-Ion Battery Pack- DENSO Battery Management Unit monitors and controls the voltage of the lithium-ion battery cells to maintain the proper charge level to protect them from overcharge and over-discharge.
- Depending on the operational status of the vehicle, this device controls the charging of the battery cells by the energy captured during deceleration and braking. It also controls the amount of power supplied to the car navigation, audio, and other systems during driving.
- High-power rechargeable Li-ion battery cells can efficiently store more regenerated power quickly to vehicle’s electronic and electrical components.
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