12VNominal voltage
18AhAmp-hours at C20
250ACold cranking amps
Summary: For motorcycles and quads there is the Varta YTX20L-BS, carrying a 18Ah 12V 250A rating. Before anything else, measure the space: the case comes to 177 × 88 × 156 mm.
Practical advice for motorcycles and quads
Classic bikes with kick-start still rely on the battery for lights and ignition. Tighten terminal bolts firmly but do not strip the small threads. A starter that clicks but will not turn is the usual sign of a flat or worn battery.
Technical figures at a glance
The AGM technology explained
AGM stands for absorbent glass mat, a fancy name for a very tidy way of storing acid. Recharging is quick with AGM, handy for vehicles that do short trips. Check that the vent hose is connected if the battery sits inside the vehicle.
Alternatives that fit the same space
Cannot find the Varta YTX20L-BS you want? These share the same size and terminal layout.
Exide AGM12-19Exide ETX20HL-BSVarta 518919031
Your questions answered
What do 18Ah and 250A mean for this battery?
It stores 18Ah and delivers 250A of cold cranking current under the EN test. Choose a battery that matches or slightly exceeds the figures of the original.
What voltage and amp-hours does this model have?
Voltage is 12V, capacity 18Ah. Check your equipment runs on the same voltage before ordering.
Does the Varta YTX20L-BS have left or right-hand polarity?
Polarity: positive on the right-hand side. Face the long side with the posts nearest you to compare.
Buying the Varta YTX20L-BS online
Rated 18Ah 12V 250A, the Varta YTX20L-BS is listed here for motorcycles and quads. Rated 18Ah 12V 250A, it matches machines that used this code from new. Searching batteries online by exact code beats squinting at photos of near-identical boxes.
A capacity of 18Ah matches what many vehicles and machines in this group expect.
More options
Keep the code YTX20L-BS handy for next time: it makes reordering at baterias.online quick. Writing the fitting date on the battery helps when planning the next replacement.
Make sure it fits your vehicle or equipment
- ✓ Chemistry: AGM. Some vehicles and chargers are programmed for a specific type, so check before swapping.
- ✓ Size check: 177 × 88 × 156 mm. A battery even slightly taller than the original can touch the bonnet or the seat base.
- ✓ Look down at your old battery: is it also positive on the right-hand side?
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