Description
The Interstate 31M-AGM is a 12-volt, 100 Ah agm battery for engine starting and combined starting and deep-cycle service. It is rated at 925 cold cranking amps and 1190 marine cranking amps, so check your engine maker’s minimum cranking spec against that number. The case follows a BCI 31M footprint; confirm your tray size and terminal orientation before you buy. Reserve capacity is 200 minutes at a 25 A draw. The sealed AGM design is maintenance-free and spill-resistant.
Highlights
- 12 V, 100 Ah AGM
- 925 CCA / 1190 MCA
- BCI 31M footprint
- 36 month free replacement warranty
- Best for: Cranking, Dual Purpose
Specifications
| Brand | Interstate |
|---|---|
| Model / SKU | 31M-AGM |
| Nominal voltage | 12 V |
| Capacity | 100 Ah |
| Chemistry | AGM |
| Cold cranking amps (CCA) | 925 |
| Marine cranking amps (MCA) | 1190 |
| Reserve capacity | 200 min @ 25 A |
| BCI group size | 31M |
| Dimensions (L × W × H) | 13 × 6.81 × 9.44 in |
| Warranty | 36 month free replacement |
| Cranking amps (CA) | 1155 |
Specs are from the manufacturer. Check your boat’s battery compartment, terminal layout and charging system before you order.







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