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The genuine Icom BP-297 battery case is an essential safety and backup power accessory designed specifically for Icom IC-M37 and IC-M37E handheld VHF marine transceivers. It powers the radio using 3 standard AAA (LR03) alkaline batteries, ensuring the vessel maintains communication capability during emergency situations or when the primary rechargeable battery is depleted and no electrical source is available for recharging.
It maintains the radio’s waterproof integrity and environmental sealing when properly attached to the radio chassis. When powered by off-the-shelf alkaline cells, the transceiver automatically throttles its RF output power to 1 W to optimize power consumption, extend battery operating life, and ensure stable, reliable transmissions on Channel 16 and distress frequencies.
Technical Specifications
| Feature | Specification |
|---|---|
| Brand and Model | Icom BP-297 |
| Accessory Type | Alkaline battery case |
| Battery Type and Quantity | 3x AAA / LR03 alkaline batteries (not included) |
| Primary Compatibility | Icom IC-M37 and IC-M37E handheld marine transceivers |
| Water Protection | Waterproof (retains water resistance when mounted to transceiver) |
| Transmit Power Output | Automatic output reduction to 1 W (Low Power) |
| Color | Black |
Highlights
- Genuine Icom replacement battery case for the IC-M37 / IC-M37E marine series.
- Accommodates 3x 1.5 V AAA (LR03) alkaline cells.
- Watertight design protecting internal contacts against splashes and marine humidity.
- Automatic RF output limit to 1 W to preserve battery energy.
- Durable polycarbonate construction resistant to harsh marine environments.
Package Contents
- 1x Icom BP-297 battery case (AAA batteries not included).
Frequently Asked Questions
Why does the transceiver transmit at 1 W when using this battery case?
AAA alkaline batteries are not designed to continuously supply the high discharge current required for maximum transmit power (6 W). To prevent abrupt voltage drop and ensure usable operational life, the radio automatically restricts output power to 1 W, which remains sufficient for emergency communications over typical operational distances.
Is the radio still waterproof with this battery case installed?
Yes, the BP-297 includes perimeter gaskets engineered by Icom to maintain the transceiver’s waterproof submersible rating when correctly seated and locked into place.
