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First invented by us in 2008, EFB batteries have come to play an increasingly crucial role for car manufacturers in order to reduce fuel consumption and emissions. Now we bring the latest OE generation to the aftermarket, featuring Carbon Boost 2.0.
The new Sonnak EFB battery supports all vehicles, with and without Start-Stop systems, which have high cycling requirements. When installed in cars with a Start-Stop system, Sonnak’s new EFB battery shows an unmatched energy recovery and exceptional dynamic charge acceptance. The battery also benefits from a longer overall lifespan, when installed in cars with conventional power train.
Always replace an EFB battery with a new EFB battery 
High charge acceptance
High charge acceptance over battery’s lifespan
3 times higher cycle life
Sonnak Start-Stop EFB has 3 times higher cycle life than standard conventional batteries
Top safety
High-level safety features due to its spill-proof lid with flame arrestor
Optimized design
Optimized for partial-state- of-charge operations and installation in engine compartment
Documents & Resources
Part number
SL1000
CCA
900 A
Length
353 mm
Width
175 mm
Height
190 mm
Capacity
100.0 Ah
Voltage
12 V
Box size
L05
Part number
SL1050
CCA
950 A
Length
392 mm
Width
175 mm
Height
190 mm
Capacity
105.0 Ah
Voltage
12 V
Box size
L06
Part number
SL550
CCA
540 A
Length
207 mm
Width
175 mm
Height
190 mm
Capacity
55.0 Ah
Voltage
12 V
Box size
L01
Part number
SL600
CCA
640 A
Length
242 mm
Width
175 mm
Height
190 mm
Capacity
60.0 Ah
Voltage
12 V
Box size
L02
Part number
SL604
CCA
520 A
Length
230 mm
Width
173 mm
Height
222 mm
Capacity
60.0 Ah
Voltage
12 V
Box size
D23
Part number
SL605
CCA
520 A
Length
230 mm
Width
173 mm
Height
222 mm
Capacity
60.0 Ah
Voltage
12 V
Box size
D23
Part number
SL652
CCA
650 A
Length
278 mm
Width
175 mm
Height
175 mm
Capacity
65.0 Ah
Voltage
12 V
Box size
LB3
Part number
SL700
CCA
760 A
Length
278 mm
Width
175 mm
Height
190 mm
Capacity
70.0 Ah
Voltage
12 V
Box size
L03
Part number
SL752
CCA
730 A
Length
315 mm
Width
175 mm
Height
175 mm
Capacity
75.0 Ah
Voltage
12 V
Box size
LB4
Part number
SL754
CCA
750 A
Length
260 mm
Width
173 mm
Height
222 mm
Capacity
75.0 Ah
Voltage
12 V
Box size
D26
Part number
SL800
CCA
800 A
Length
315 mm
Width
175 mm
Height
190 mm
Capacity
80.0 Ah
Voltage
12 V
Box size
L04
Part number
SL954
CCA
800 A
Length
306 mm
Width
173 mm
Height
222 mm
Capacity
95.0 Ah
Voltage
12 V
Box size
D31
Part number
SL955
CCA
800 A
Length
306 mm
Width
173 mm
Height
222 mm
Capacity
95.0 Ah
Voltage
12 V
Box size
D31