Motobatt 12V AGM Battery - MBT4BB
The Motobatt 12V AGM Battery – MBT4BB is engineered for riders who want stronger starts, longer battery life, and zero maintenance. Built for motorcycles, ATVs, UTVs, and other powersports applications, this battery delivers a clear performance advantage over standard AGM replacements.
Motobatt’s patented Quadflex technology is the key difference. By utilizing unused internal space found in conventional batteries, Quadflex allows for larger internal plates and a more efficient balance between amp-hour capacity and cold cranking amps. Enhanced grid thickness, denser paste, and increased active material enable the MBT4BB to deliver up to 30% more capacity and power than same-size competitor batteries—ideal for cold starts and high-demand electrical systems.
Premium AGM construction makes this battery fully sealed, spill-proof, and extremely resistant to vibration and internal weld fatigue. It’s factory activated and maintenance-free, eliminating the need to add acid or perform setup. Shipping pre-charged at over 12.5 volts, the MBT4BB is ready to install right out of the box. Improved solid-mounted terminals with threaded inserts ensure secure connections and long-term reliability.
For riders seeking a high-performance 12V AGM powersports battery that combines power, safety, and convenience, the Motobatt MBT4BB is a smart, confidence-inspiring upgrade.
Replaces:
- Yuasa YT4BBS GT4-3
- WPS 491-1021
Installation Instructions:
Specifications:
| Battery Type | MBT4BB | |
|---|---|---|
| Voltage | 12V | |
| CCA | 40 | |
| MCA | 94A | |
| PHCA | 254A | |
| Capacity (10HR) | 2.5Ah, C20 2.7Ah | |
| Weight | .97kg / 2.13Ibs | |
| Dimensions (in / mm) | L: 4.45(113) W: 1.5(38) H: 3.43(87) | |
| Assembly Figure Terminal Locations | 2 |  |
| Terminals | 2 Spade | |
