In short: Need a battery for trucks and farm machinery? Consider the Varta B39, rated 45Ah 12V 300A. Check the terminal side, as this one has the positive on the right-hand side.
Is the Varta B39 right for you?
Running a lorry, a tractor or a digger that takes a Varta B39? Here it is. Holding 45Ah, there is reserve for night heaters, fridges and tail lifts on long stops. Batteries online for commercial vehicles are easiest to order by exact code.
A modest 45Ah keeps size and weight down for tight spaces.
12VNominal voltage
45AhCapacity (C20)
300ACold cranking amps
Check before ordering
- ✓ Built with lead-acid technology: if your vehicle or system was set up for another chemistry, check the charging settings first.
- ✓ Size check: 210 × 175 × 175 mm. A battery even slightly taller than the original can touch the bonnet or the seat base.
- ✓ Note which corner the plus post occupies on your old unit. Here it is positive on the right-hand side, and crossed cables rarely reach.
Full specifications of the Varta B39
ManufacturerVarta
Model codeB39
RangeVARTA ProMotive SLI
Used fortrucks and farm machinery
Nominal voltage12V
Capacity (C20)45Ah
Cold cranking amps300A
Battery technologyLead-acid
Outer measurements210 × 175 × 175 mm
Battery weight10.76 kg
Polaritypositive on the right-hand side
EAN4016987166574
Your questions answered
What is the cold cranking rating of the Varta B39?
300A under the EN test. Diesel engines usually need more cranking power than petrol engines of the same size.
Does this battery match my current one physically?
A physical match means the same case (210 × 175 × 175 mm) and the same terminal side (positive on the right-hand side).
Care tips for lead-acid batteries
Wet lead batteries started engines long before the first motorway was built. Older cars without stop-start systems are happy with a standard lead-acid battery. Top up only with distilled water, after charging, never above the mark.
See also
Everything you need to order the Varta B39 is on this page. Bookmark this page if you want the data sheet to hand while fitting.
Varta B39 in everyday use
A school bus parked over the summer holidays often needs a charge before term. Lift heavy batteries with a proper strap, not by the posts. A cracked case from vibration means the battery should come out at once.
