Prima YTX4L-BS 12V AGM battery for 50cc scooters — 50 CCA, maintenance-free, fits Genuine Buddy, Vespa ET2, Honda Elite, Kymco, Yamaha Jog, replaces Yuasa YT4L-BS

Prima YTX4L-BS battery with acid pack — AGM sealed lead-acid, must be charged after activation, US ground shipping only, fits 139QMB 50cc/80cc scooters

Prima YTX4L-BS battery side view — 12V DC, 3Ah/6Ah, 4.5" x 2.8" x 3.4", left negative / right positive terminals, SKU B12K2

Prima

Prima YTX4L-BS AGM Battery 12V | 50cc Scooter ATV

Name: Prima YTX4L-BS AGM Battery 12V | 50cc Scooter ATV
Brand: Prima
SKU: B12K2
Price: 38.0 USD
Availability: InStock

SKU B12K2

$38.00

Shipping calculated at checkout.

Product variants

Quantity

Description

Keep your 50cc scooter starting reliably with the Prima YTX4L-BS 12V AGM battery. Advanced Glass Mat (AGM) construction is maintenance-free and leak-proof once sealed. Delivers 50 CCA for consistent cranking on 50cc–150cc engines. Direct replacement for Yuasa YT4L-BS. Includes an acid pack for fresh activation.

Voltage: 12V DC
Capacity: 3Ah (10-hr) / 6Ah effective
Cold cranking amps (CCA): 50
Dimensions: 4.5" L x 2.8" W x 3.4" H
Polarity: Left [-] / Right [+]
Cross-reference: Yuasa YT4L-BS
Weight: 4 lbs
Made in China

Compatible Models:

Genuine: Buddy 50, RoughHouse 50, Black Cat 50, Rattler 50
Vespa / Piaggio: ET2, S 50, Fly 50, Zip
Honda: Aero NB50, Elite 50 (S/SR/LX), Spree NQ50, Gyro TG50
SYM / Lance: Fiddle 50, Mio 50, Cali Classic 50, Cabo 50
Kymco / TGB: Cobra, People 150, Laser 50, Key West 50
Yamaha: Riva 50, Jog CY50
Chinese 50cc/80cc: TaoTao, Wolf, Ice Bear, and most 139QMB-powered scooters (engine codes: 139QMA/QMB, 1P39QMB, YN139QMB, JJ1P39QMB, BN139QMB, 147QMD)

Note: Charging is required after adding acid and before installation. For a pre-activated gel battery, see SKU 0900-1115 — Prima Nanogel Battery (12V YG4L-BS).

Ships via US domestic ground only — not available for international, expedited, Alaska, Hawaii, or Puerto Rico orders.

For infrequent use, pair with a NOCO Smart Battery Charger to maintain charge over winter or long periods of non-operation.

California Prop 65 Warning: www.p65warnings.ca.gov

Product Diagrams

Features

12V AGM maintenance-free battery — leak-proof once sealed
50 CCA — reliable cold-weather cranking for 50cc–150cc engines
Direct replacement for Yuasa YT4L-BS
Includes acid pack — must be charged after activation before installation
US domestic ground shipping only — not available for AK, HI, PR, or international

Specifications

Model Fitments

Genuine Buddy 50 / RoughHouse 50 / Black Cat 50 / Rattler 50 | Vespa ET2 / S 50 / Fly 50 / Zip | Honda Aero NB50 / Elite 50 / Spree NQ50 / Gyro TG50 | SYM/Lance Fiddle 50 / Mio 50 / Cali Classic 50 / Cabo 50 | Kymco Cobra / People 150 / TGB Laser 50 / Key West 50 | Yamaha Riva 50 / Jog CY50 | Chinese 139QMB 50cc/80cc scooters