Mastervolt AGM 12/90 Group 31 Battery
Mastervolt 90Ah 12V sealed AGM marine battery with 570A SAE starting current, M8/A-type terminals, and maintenance-free construction.
The Mastervolt AGM 12/90 is a sealed 12V Group 31 absorbed-glass-mat battery for boats needing reliable engine-starting current and a compact reserve of DC power. Its glass-fibre separator reduces internal resistance for strong short-duration current delivery, while maintenance-free construction makes it a practical upgrade from flooded lead-acid batteries. The 90Ah C20 capacity, 570A SAE cold-cranking rating, and M8/A-type connections make size, terminal compatibility, and starter demand easy to check before replacement.
- 12V sealed AGM battery, 90Ah at the 20-hour discharge rate (C20)
- Battery size: Group 31
- 570A SAE / 360A DIN cold-cranking capability
- Maximum charging current: 25.5A
- Maintenance-free glass-fibre absorbed electrolyte; two-year manufacturer warranty
Manufacturer | Mastervolt |
Category | Batteries |
Item Number | 62000900 |
Series | AGM |
Connection/Terminal | M8 threaded / A-type |
Dimensions | 330 × 173 × 220 mm (13.0 × 6.8 × 8.7 in) |
Weight | 28 kg (61.7 lb) |
Material | Sealed AGM (absorbed glass mat) lead-acid |
Voltage Type | DC |
Nominal Voltage | 12 V |
Capacity | 90 Ah (C20) |
AMPS/Current Rating | Max. charging current: 25.5 A; CCA (SAE): 570 A |
Spec Sheet | View Manufacturer Spec Sheet |
- Chemistry: absorbed glass mat (AGM), sealed lead-acid
- Nominal voltage: 12V
- Capacity C20: 90Ah
- Battery group: Group 31
- Cold-cranking current: 360A DIN / 570A SAE
- Maximum charging current: 25.5A
- Terminals: M8 threaded / A-type
- Dimensions (L × W × H): 330 × 173 × 220 mm (13.0 × 6.8 × 8.7 in)
- Weight: 28 kg (61.7 lb)
How to Order
To place an order, request a quote online, call our team, or visit one of our retail locations for personalized assistance.
Installation & Support
If you need certified installation or technical support, contact our service team. We provide expert installation and service support worldwide.
Inquire for Projects
From refits to new builds and complex marine electrical projects, our internationally recognized, certified marine electrical engineering team provides expert support worldwide. Contact us to discuss your project and request a customized quote.
.svg){kind=icon}
