Varta

Varta YTX20CH-BS · Motorcycle battery 12V 18Ah 270A

Reference: BOL-VARTA-518908027 · EAN 4016987169544

The Varta YTX20CH-BS (ETN 518 908 027, also written 518908027) is a motorcycle battery (AGM) with 12 V, 18 Ah and 270 A cold cranking current, measuring 150 × 87 × 161 mm, with the positive terminal on the left.

Voltage
12V
Capacity
18Ah
Cold cranking amps (EN)
270A
Technology
AGM
Dimensions (L × W × H)
150 × 87 × 161 mm
Polarity
Positive terminal on the left
Price: €84.77
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Who the Varta YTX20CH-BS is for

The Varta YTX20CH-BS is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. It handles frame vibration and idle periods better than an adapted car battery.

At 18 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. Varta lists the YTX20CH-BS in its Powersports AGM line. The full range of Varta batteries

Part numbers and codes for the Varta YTX20CH-BS

Look for any of these YTX20CH-BS codes on your current battery or in the manufacturer's catalogue:

Commercial referenceYTX20CH-BS
ETN code518908027 (also 518 908 027)
Manufacturer short codeTX20CH-BS
EAN4016987169544
Base hold-downB00
Terminal typeY4
Also known asVarta 518908027 · Varta 518 908 027 · Varta TX20CH-BS
Not to be confused withVarta YTX20H-BS (18 Ah, 320 A, positive terminal on the right)

Equivalents and alternatives to the Varta YTX20CH-BS

Other AGM batteries that fit the YTX20CH-BS's tray with the same polarity: an AGM can only be replaced by another AGM.

ModelTechnologyCapacityCold cranking (EN)Dimensions (mm)
Fulbat FTX20A-BSAGM18.9 Ah270 A150 × 87 × 161
Motobatt MBTX16UAGM19 Ah250 A151 × 87 × 161

Varta YTX20CH-BS vs YTX16-BS-1, TX14H (FA) and YTX16-BS: which one to choose?

How the YTX20CH-BS compares with Varta batteries of similar size and capacity:

ModelCapacityCold cranking (EN)Dimensions (mm)PositiveWeight
Varta YTX20CH-BS (this one)18 Ah270 A150 × 87 × 161left5.53 kg
Varta YTX16-BS-114 Ah210 A150 × 87 × 161left4.96 kg
Varta TX14H (FA)16 Ah240 A150 × 88.5 × 145left5.4 kg
Varta YTX16-BS14 Ah210 A150 × 87 × 161left4.99 kg
  • Varta YTX16-BS-1: 4 Ah less, 60 A less cranking power, the same dimensions.
  • Varta TX14H (FA): 2 Ah less, 30 A less cranking power, a different height (145 mm instead of 161 mm). It is the option if your battery tray cannot take the 161 mm height of the YTX20CH-BS.
  • Varta YTX16-BS: 4 Ah less, 60 A less cranking power, the same dimensions.

Check this before ordering the Varta YTX20CH-BS

  • Length, width and height of the YTX20CH-BS: 150 × 87 × 161 mm.
  • Polarity of the YTX20CH-BS: positive terminal on the left (if yours has it on the other side, the cables will not reach).
  • Your current battery should say about 18 Ah; a little more is also fine.
  • The YTX20CH-BS delivers 270 A cold cranking (EN standard); do not go below what your original battery states.

Frequently asked questions about the Varta YTX20CH-BS

YTX20CH-BS or YTX16-BS-1: which one suits me?

Compared with the YTX20CH-BS, the Varta YTX16-BS-1 has 4 Ah less and 60 A less cranking power. The YTX20CH-BS cranks harder; the YTX16-BS-1 is only a good option if your original battery says 210 A or less. Both measure 150 × 87 × 161 mm, so they fit the same tray.

Varta YTX20CH-BS or TX14H (FA): what changes?

Mainly the height: the YTX20CH-BS is 161 mm tall and the Varta TX14H (FA) 145 mm, with the same length and width. In capacity and cranking power, the TX14H (FA) offers 16 Ah and 240 A against 18 Ah and 270 A. Before choosing between the YTX20CH-BS and the TX14H (FA), measure the free height of the battery compartment with the cover or bonnet closed.

Is the Varta 518908027 the same battery as the Varta YTX20CH-BS?

Yes. 518908027 is the ETN code Varta uses for its YTX20CH-BS battery, so you can search for it by either code.

How much does the Varta YTX20CH-BS weigh?

5.53 kg, with 18 Ah of capacity. For reference, the Varta YTX16-BS-1 (14 Ah) weighs 4.96 kg.

Which battery is equivalent to the Varta YTX20CH-BS?

Only other AGM batteries with its dimensions and polarity: Fulbat FTX20A-BS and Motobatt MBTX16U. Neither an EFB nor a conventional battery replaces the YTX20CH-BS.

Which side is the positive terminal on the Varta YTX20CH-BS?

On the YTX20CH-BS, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

Which charger does the Varta YTX20CH-BS need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

Inside the YTX20CH-BS: AGM technology

The YTX20CH-BS is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the YTX20CH-BS can be fitted in the boot or under a seat with no risk of spills.

Other options if you are unsure about the YTX20CH-BS

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