Ignitions and Electrical› Charging Systems
ARCO MARINE
BATTERY ISOLATOR 2 ALTERNATORS 2 BATTERIES 70 AMP MAX
SKU: A09I BI-2702
Beginner — under 30 min
Description
This isolator supports two alternators and two batteries, with a maximum amperage of 70 amps. It functions as a solid-state device, allowing current to flow in one direction only, which prevents a higher-charged battery from discharging into a lower-charged one. Both batteries are charged automatically and proportionally to their needs whenever the engine is running.
Fitment
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Specifications
| Brand | ARCO MARINE |
| Part Number | A09I BI-2702 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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