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Yuasa Motorbike battery YTX12-BS 12V 10Ah (10,5Ah) (AGM maintenance-free)

Description

Product information

The Yuasa YTX12-BS (often simply referred to as YTX12 listed when filled at the factory) is one of the most frequently installed standard types for motorbikes worldwide. It is the "big brother" of the YTX9-BS and, with approx. 10 Ah (10h) or 10.5 Ah (20h) and 180 A cold start current, offers the ideal balance of size and performance for medium to heavy motorbikes (600cc to 1200cc). It is used in countless naked bikes, sports bikes and enduro bikes from Kawasaki, Suzuki, Triumph, Aprilia and Honda.

Highlights at a glance

  • The bestseller: One of the most popular battery sizes ever (150 x 87 x 130 mm), installed in millions of vehicles such as Kawasaki Z750/Z1000, Suzuki V-Strom 650 or Triumph Bonneville.
  • AGM technology: The acid is bound in the glass fleece (Absorbent Glass Mat), which makes the battery leak-proof (up to 45° inclination) and very vibration-resistant.
  • Solid starting power: With 180 A (EN) cold start current, it reliably starts multi-cylinder engines even in cooler temperatures.
  • Maintenance-free: Thanks to VRLA technology (valve regulated), the system is hermetically sealed after initial filling and sealing; no water loss, no topping up.
  • Long service life: The robust Yuasa construction with sulphation brake ensures above-average durability when the battery is maintained in winter.
  • YTX12 vs. YTX12-BS: Technically identical. "BS" means that the acid pack is supplied separately (dry pre-charged), while "YTX12" (without BS) is often the designation for the factory-filled version.

The all-rounder for Kawasaki, Suzuki & Co.

The YTX12-BS is the standard for the middle and upper class. It fits into the battery box of the Kawasaki Z-series (Z750, Z800, Z1000, ZX-10R), the Suzuki DL 650 V-Strom and SV 650 (older models), the Triumph Street Triple / Speed Triple (many years of construction), the Aprilia RSV 1000 or the Honda CBR 1100 XX Blackbird. It offers sufficient reserves for injection systems and ABS systems of this generation.
 

Features

ModelYuasa YTX12-BS (High Performance MF)
ApplicationMotorbike & scooter (universal size - Vespa GTS, Kawasaki, Triumph)
TechnologyAGM (VRLA) - Dry pre-charged (incl. acid pack)
Voltage12 V
Capacity10 Ah (10 hours) / 10.5 Ah (20 hours)
Cold start current (CCA)180 A (EN)
Dimensions (L x W x H in mm)150 x 87 x 130
Pole arrangement1 (positive pole left)
Connection terminalType 5 (front/top mounting)
Bottom barN (No base plate)
Special featuresTilt-proof up to 45° (after filling), maintenance-free, bestseller
Weight (kg)approx. 4.2 (filled)
 

FAQs about the Yuasa YTX12-BS

What is the difference to the YT12A-BS and YT12B-BS?

This is extremely important, as all three batteries are called "12" but have completely different dimensions!

  • YTX12-BS (your battery): 150 x 87 x 130 mm (standard "thick & high").
  • YT12A-BS: 150 x 87 x 105 mm (flatter, e.g. Suzuki GSX-R).
  • YT12B-BS: 150 x 69 x 130 mm (narrower, e.g. Ducati). The YTX12-BS fits not in motorbikes built for the smaller A or B types.

What is the difference to the YTX14-BS?

The YTX14-BS has the same footprint (150x87 mm), but is higher (145 mm instead of 130 mm).

  • If you have space above (approx. 1.5 cm), you can theoretically upgrade to the more powerful YTX14-BS (more starting current).
  • However, if the seat is a tight fit (which is usually the case), only the YTX12-BS will fit.

Do I need to charge the battery before installation?

With the BS version (acid pack included): Yes. After filling with acid, the battery has approx. 75-80% charge. For maximum service life, you should always bring it to 100% with a charger ("top-up charge") before starting the engine for the first time. With the factory-filled version (YTX12): Measure the voltage. If it is below 12.6 V, you should recharge.

Can I install this battery horizontally?

The YTX12-BS is designed for the standing installation (vertical). It is safe up to a certain angle of inclination, but for completely horizontal installation (90°) many manufacturers recommend the "Factory Activated" (factory-filled) versions (often labelled "WC") or special gel/lithium batteries to be 100% sure that no error has occurred during activation.

Properties
Capacity: 10.5Ah
Tension: 12V
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