Varta
Varta A12 · Start-Stop battery 12V 35Ah 340A
Reference: BOL-VARTA-A12 · EAN 4016987169957
The Varta A12 (ETN 535 902 034, also written A 12 or 535902034) is a Start-Stop battery (AGM) with 12 V, 35 Ah and 340 A cold cranking current, measuring 196 × 126 × 223 mm, with the positive terminal on the left.
Varta A12 · Start-Stop battery 12V 35Ah 340A images
- Voltage
- 12V
- Capacity
- 35Ah
- Cold cranking amps (EN)
- 340A
- Technology
- AGM
- Dimensions (L × W × H)
- 196 × 126 × 223 mm
- Polarity
- Positive terminal on the left
Price:
€112.03
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14 days to return your order
If it does not fit, you have 14 days from delivery to return it unused.
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The Varta A12 at a glance
The Varta A12 is a battery for cars with Start-Stop: it withstands many more starting and partial-discharge cycles than a conventional battery and powers the electronics every time the engine stops at the lights. It takes repeated discharges without losing capacity the way a conventional battery would.
At 35 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. Varta lists the A12 in its Dynamic AGM JIS line. The full range of Varta batteries
Varta A12 codes and part numbers
Look for any of these A12 codes on your current battery or in the manufacturer's catalogue:
| Commercial reference | A12 (A 12) |
|---|---|
| ETN code | 535902034 (also 535 902 034) |
| EAN | 4016987169957 |
| Case size according to Varta | B20R |
| Base hold-down | B00 |
| Also known as | Varta A 12 · Varta 535902034 · Varta 535 902 034 · B20R |
| Not to be confused with | Varta A17 (41 Ah, 360 A, positive terminal on the right), Varta E12 (74 Ah, 680 A), Varta A13 (40 Ah, 330 A, positive terminal on the right) |
Varta A12 vs A11
How the A12 compares with Varta batteries of similar size and capacity:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta A12 (this one) | 35 Ah | 340 A | 196 × 126 × 223 | left | 11 kg |
| Varta A11 | 45 Ah | 370 A | 236 × 126 × 224 | left | 13.18 kg |
- Varta A11: 10 Ah more, 30 A more cranking power, a different case (236 × 126 × 224 mm).
Equivalents and alternatives to the Varta A12
No other reference in the catalogue fully matches the dimensions and polarity of the A12; you will find the closest ones among our start-Stop batteries (AGM and EFB).
What it means that the A12 is AGM
The A12 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the A12 can be fitted in the boot or under a seat with no risk of spills.
Before ordering the A12, check this
- The A12 is AGM: it replaces an AGM or an EFB of the same size. You can swap an EFB for an AGM, but not an AGM for an EFB.
- Cold cranking: 340 A (EN), equal to or higher than the original.
- With 35 Ah, the A12 replaces an original battery of that capacity or slightly less.
- With the terminals facing you, the positive terminal of the A12 is on the left.
- The A12 needs 196 × 126 × 223 mm of space: measure it with the hold-down clamp in place.
Frequently asked questions about the Varta A12
Varta A12 or A11?
Compared with the A12, the Varta A11 has 10 Ah more and 30 A more cranking power. If your current battery says 370 A or more, choose the A11; if it says 340 A or less, the A12 is enough. Mind the space: the A11 measures 236 × 126 × 224 mm.
What does the code 535 902 034 on the Varta A12 mean?
It is its ETN (European Type Number), also written 535902034. The first three digits (535) encode voltage and capacity: 12 V and 35 Ah (5xx = under 100 Ah, 6xx = 100 to 199 Ah, 7xx = 200 Ah or more). The middle group (902) identifies the specific model within that capacity, and the last three digits (034) multiplied by 10 give the cold cranking current: 340 A.
Can the Varta A12 be used in a car with Start-Stop?
Yes. As an AGM battery, the A12 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size.
How much does the Varta A12 weigh?
The A12 weighs 11 kg. For reference, the Varta A11 (45 Ah) weighs 13.18 kg.
Which side is the positive terminal on the Varta A12?
The A12 has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.
Why does a Start-Stop battery cost more than a standard one?
Because it uses reinforced plates and separators to withstand thousands of starts and partial discharges. A conventional battery in a Start-Stop car can fail in under a year.
Other options if you are unsure about the A12
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