Yuasa Motorbike battery YT14B-BS 12V 12Ah (12.6Ah) (AGM maintenance-free)
Product information
The Yuasa YT14B-BS (often also referred to as YT14B-4) is a special AGM high-performance battery with the characteristic, very slim design. It is the "big brother" of the YT12B-BS and was specially developed for heavy motorbikes that have little space in width but nevertheless require a high capacity. With approx. 12 Ah (according to the 10h standard) or 12.6 Ah (according to the 20h standard) and a cold start current of 210 A, it is the standard power unit for large Yamaha tourers and cruisers.
Highlights at a glance
- Extra slim design: At only 70 mm wide, it is extremely slim (just like the YT12B, but taller) to fit into special battery boxes where standard batteries would be too thick.
- AGM technology: The acid is bound in the glass fleece, which makes the battery leak-proof, extremely vibration-resistant and maintenance-free – ideal for heavy touring machines.
- High capacity: Offers 12.6 Ah, providing sufficient reserves for additional electrical consumers such as heated grips, navigation devices or electric windscreens on touring bikes.
- Maintenance-free: Thanks to VRLA technology (valve regulated), there is no need to top up with water; the system is hermetically sealed after initial filling.
- Reliable start: Delivers approximately 210 A cold start current to reliably start even large-displacement four-cylinder or V2 engines in cold conditions.
- Yamaha specialist: Was developed specifically as original equipment for models such as the Yamaha FJR 1300 or MT-01.
The specialist for Yamaha FJR & MT-01
The YT14B-BS is almost inextricably linked to the Yamaha brand. It is the original battery for the Yamaha FJR 1300 (all model years), the Yamaha MT-01 (1700cc), the Yamaha XJR 1300 (from 2007) or the Yamaha BT 1100 Bulldog. These motorbikes have a very narrow battery compartment into which the regular "YTX14-BS" (which is much thicker) does not fit mechanically.
Features
| Model | Yuasa YT14B-BS (High Performance MF) |
| Application | Motorbike (Yamaha specialist - FJR1300, MT-01, XJR1300) |
| Technology | AGM (VRLA) - Dry pre-charged (incl. acid pack) |
| Voltage | 12 V |
| Capacity | 12 Ah (10 hrs) |
| Cold start current (CCA) | 210 A (EN) |
| Dimensions (L x W x H in mm) | 152 x 70 x 145 (extremely slim & tall) |
| Pole arrangement | 1 (positive pole left) |
| Connection terminal | Type 11 (front/top mounting) |
| Base bar | N (No base bar) |
| Special features | Tilt-proof up to 45° (after filling), high starting power, maintenance-free |
| Weight (kg) | approx. 4.6 (filled) |
FAQs about the Yuasa YT14B-BS
What is the difference to the YTX14-BS?
The crucial difference is the width.
- YTX14-BS (standard): 150 x 87 x 145 mm.
- YT14B-BS (your battery): 150 x 70 x 145 mm. The YTX14-BS is almost 2 cm thicker. You can't fit the YTX14-BS in a Yamaha FJR 1300. So be sure to look for the "B" in the name (YT14B).
What is the difference to the YT12B-BS?
Both are equally slim (70 mm) and equally long. The difference is in the height and performance.
- YT12B-BS: 130 mm high (approx. 10 Ah).
- YT14B-BS: 145 mm high (approx. 12.6 Ah). So the YT14B is 1.5 cm taller. It offers more power, but only fits if there is still room upwards (often the seat or frame strut). Upgrading from 12B to 14B is usually not mechanically possible.
Do I have to charge the battery before installation?
For the "BS" version (with acid pack), fill in the acid and allow the battery to stand ("gas out") for approx. 30–60 minutes. It then has about 70–80% charge. To achieve the maximum service life, it is strongly recommended to fully charge it with a motorbike charger before installation. With the factory-filled version (YT14B-4), you should check the voltage and recharge if necessary if it has been on the shelf for a long time.
| Capacity: | 12.6Ah |
|---|---|
| Tension: | 12V |
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