Prima YG5-3B Gel Battery - Vespa P/PX & Stella Auto

This Prima YG5-3B nanogel battery lets you spend less time maintaining your battery and more time enjoying your scooter. Fully sealed, pre-charged and maintenance-free, it delivers 12V power without the acid top-ups of a conventional battery. It's a direct replacement for the 12N5.5-3B in compatible vintage Vespa and Genuine Stella 125 Automatic applications, with terminal hardware included to help complete the swap.

Key Features

• Less upkeep: Maintenance-free nanogel construction requires no acid topping.
• Sealed and pre-charged: No separate acid-filling step.
• Direct replacement: Replaces the lead-acid 12N5.5-3B in compatible applications.
• 12V performance: 5Ah capacity and 80 cold-cranking amps.
• Hardware included: Battery terminal hardware supplied.

Technical Specifications

• Brand: Prima
• Part number: 0900-1093
• Battery model / manufacturer part number: YG5-3B
• Replacement reference: 12N5.5-3B
• Construction: Sealed, maintenance-free nanogel
• Voltage: 12V DC
• Capacity: 5Ah
• Cold-cranking amps: 80 CCA
• Polarity: Positive (+) right, negative (-) left when facing the battery's labeled front with terminals at the top
• Length: 4 5/8 inches
• Width: 2 1/4 inches
• Height: 5 1/8 inches
• Included: Battery and terminal hardware

Compatibility

Confirm your existing battery reference, battery-box dimensions, terminal arrangement and cable reach before ordering, especially on modified vintage scooters. For more applications, use our battery fitment guide.

Prefer the conventional option? See the lead-acid 12N5.5-3B battery.

Shipping Restrictions

This battery ships via U.S. domestic ground only to the contiguous 48 states and D.C. It cannot ship internationally or to Alaska, Hawaii or Puerto Rico. Expedited shipping is not available.

• Maintenance-free nanogel construction: no acid top-ups and less battery upkeep
• Fully sealed and pre-charged; no separate acid-filling step
• Direct replacement for lead-acid 12N5.5-3B in compatible applications
• Battery terminal hardware included
• Ground shipping only to contiguous 48 U.S. states and D.C.; no expedited shipping
• 12V DC, 5Ah capacity and 80 CCA

Brand: Prima; Part number: 0900-1093; Battery model/MPN: YG5-3B; Replaces: 12N5.5-3B; Construction: sealed maintenance-free nanogel; Voltage: 12V DC; Capacity: 5Ah; CCA: 80; Polarity facing labeled front with terminals up: positive right, negative left; Length: 4 5/8 in; Width: 2 1/4 in; Height: 5 1/8 in; Terminal hardware: included; Shipping: ground only to contiguous 48 U.S. states and D.C.; no international, Alaska, Hawaii, Puerto Rico or expedited shipping

Vespa P125X, P150X, P200E, PX125E, PX150E, PX200E, T5 125, Rally 200 (VSE); Genuine Stella 125 Automatic; all years as specified for these model applications; replaces 12N5.5-3B; confirm battery dimensions, polarity and cable reach