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Home / Lighting / Driving & light bars

Century YTX20HL-BS-PW motorcycle battery — black AGM VRLA case with raised Type A terminalsThree-view line drawing of a battery terminal, front, side and top, showing a round post in a square body, labelled Terminal Type – Century batteryPlan outline of a six-cell battery case with the negative marked at the left end and the positive at the right

Century

YTX20HL-BS-PW Motorcycle Battery — 310CCA 18Ah AGM

151125

12V 18Ah AGM motorcycle battery with 310 cold-cranking amps, in the YTX20HL-BS-PW case. Fits Honda VT750 Shadow, Suzuki M50/M90 Boulevard, Yamaha V-Max 1200, Kawasaki Vulcan 1500 and other mid-displacement cruisers and tourers.

$210.00

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Fits mid-displacement motorcycles taking the YTX20HL-BS-PW case.

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Professional installation available

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The Century EverRide YTX20HL-BS-PW is a 12V 18Ah AGM motorcycle battery that cranks mid-displacement cruisers and tourers at 310 cold-cranking amps. It fits Honda VT750 Shadow, Suzuki M50/M90 Boulevard, Yamaha V-Max 1200, Kawasaki Vulcan 1500 and other builds that take the YTX20HL-BS-PW case.

The case measures 175 by 87 by 175mm and weighs 6.02kg. Lead-calcium cast grid plates pack 18Ah into that tall, narrow footprint and cut gassing and self-discharge compared with older antimony plates. AGM VRLA construction seals the acid between glass mats, so there is no spill and the battery mounts on any angle. Terminal Type A posts sit on the standard motorcycle layout, negative on the left and positive on the right.

Ships dry-charged. Fill with the supplied acid pack, let it rest and heat-seal the lid before first fit, following the Century EverRide user manual. Charge on a dedicated AGM-profile charger (Century's CC6121.2 is the matched unit). A straight automotive charger will boil off the electrolyte and shorten the life.

  • AGM VRLA sealed — mounts on any angle, no spill
  • 310 cold-cranking amps — strong starting for mid-displacement cruisers
  • Lead-calcium grid — low self-discharge, lower gassing
  • Vibration-resistant — built for cruisers and tourers
  • Maintenance-free — sealed caps after dry-charge activation
  • Terminal Type A — standard motorcycle polarity, negative left

Electrical

Voltage: 12V

CCA: 310A

Capacity: 18Ah

Chemistry & Construction

Technology: AGM VRLA

Grid alloy: Lead-calcium

Activation: Dry-charged

Physical

Dimensions: 175 × 87 × 175mm

Weight: 6.02kg

Terminal type: A

Length175mm
Width87mm
Height175mm
Weight6.02kg

Ships dry-charged with a sealed acid pack. Fill, let the battery rest, then heat-seal the lid per the Century EverRide user manual before fitting. Allow about an hour.

VRLA sealed construction allows mounting on any angle; keep the vent clear.

Terminal Type A, negative on the left end and positive on the right.

Century EverRide user manual

Fits mid-displacement motorcycles taking the YTX20HL-BS-PW case.
Honda VT750 Shadow, Spirit
Suzuki M50 / M90 Boulevard
Yamaha V-Max 1200, Royal Star
Kawasaki Vulcan 1500
BMW R850 / R1100 using the 18Ah case
Lithium-only bikes (needs AGM-rated regulator)

Q: What does AGM actually mean?
Absorbed Glass Mat. The acid is soaked into glass mats between the plates instead of sitting as free liquid, so the battery is sealed, cannot spill, and resists vibration.

Q: What does CCA actually mean?
Cold Cranking Amps. The current the battery delivers for 30 seconds at -18°C while holding above 7.2V. The YTX20HL-BS-PW is rated at 310CCA.

Q: What does Ah actually mean?
Amp-hours. The reserve capacity with the engine off. 18Ah means roughly 18 amps for one hour, or one amp for 18 hours, before flat.

Q: Does it ship ready to install?
No. It ships dry-charged with a sealed acid pack. Fill, let it rest and heat-seal the lid per the Century EverRide user manual before fitting. Activation takes about an hour. A battery shop can do the activation for a small fee if you'd rather not.

Q: Can I mount it on its side?
Yes. The AGM construction is sealed; mount on any angle without spilling. Keep the vent clear.

Q: Will my existing charger work?
Only if it has an AGM mode. A straight automotive charger pushes voltage too high for AGM, which boils off electrolyte. Use a smart charger with an AGM profile; Century's own CC6121.2 is the matched unit.

Q: Which bikes take a YTX20HL-BS-PW?
Mid-displacement cruisers and tourers needing 310CCA in a 175 × 87 × 175mm tall-narrow case. Common fitments include Honda VT750 Shadow, Suzuki M50/M90 Boulevard, Yamaha V-Max 1200 and Royal Star, Kawasaki Vulcan 1500, and some BMW R850/R1100 models.

Q: How long will it last?
Typical motorcycle AGM batteries last 3-5 years with regular use and a charger kept on during long storage. A trickle charger over winter adds years.

Q: What's the terminal type?
Terminal Type A. Round posts on the standard motorcycle layout, negative on the left and positive on the right. Matches factory fitment on YTX20HL-BS-PW bikes.

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