If you’re using an ICOM M34 or M36 marine radio, you know how important battery performance is—especially when you’re out at sea. In this post, we’ll explore the ICOM M34/M36 series, highlight the benefits of replacing the BP-241 battery, and help you find the right replacement battery to keep your device running strong.
🚤 About the ICOM M34 & M36 Marine Radios
The ICOM M34 and ICOM M36 are well-known handheld VHF marine radios, designed for reliable performance on the water. They’re both waterproof, floatable, and ideal for sailors, boaters, and marine professionals.
📊 ICOM M34 vs M36: Key Features Compared
| Feature | ICOM M34 | ICOM M36 |
|---|---|---|
| Waterproof Rating | IPX7 | IPX7 |
| Floating Design | Yes (floats if dropped in water) | Yes (floats and flashes when in water) |
| Output Power | 5W | 6W (with automatic power adjustment) |
| Noise Canceling | No | Yes (active noise canceling) |
| Battery Type | BP-241 (Ni-MH 980mAh) | BP-241 or BP-251 (Li-ion upgrade) |
| Display | Basic LCD | Large, high-contrast LCD |
| Weight (with battery) | Approx. 305g | Approx. 320g |
| Battery Life | Up to 9 hours | Up to 12 hours with BP-251 |
🔋 Why Replace Your ICOM BP-241 Battery?
Over time, the original BP-241 Ni-MH battery may degrade, reducing your radio’s reliability—something you can’t risk on the water. Here’s why upgrading or replacing the battery is essential:
✅ 1. Restore Full Battery Life
Replacing your old BP-241 battery brings back your ICOM radio’s original power capacity, helping it last through long sailing trips.
✅ 2. Avoid Mid-Use Shutdowns
A degraded battery may shut off unexpectedly, especially in colder weather. A new replacement battery ensures consistent performance.
✅ 3. Easy Installation
BP-241 replacements are plug-and-play—no tools needed. Simply slide out the old battery and install the new one.
✅ 4. Cost-Effective Alternative
Instead of replacing your entire radio, simply replacing the BP-241 battery is a much cheaper and eco-friendly option.
🛠️ Choosing the Right Replacement Battery
| Battery Model | Chemistry | Capacity | Compatible With | Battery Life (est.) | Pros |
|---|---|---|---|---|---|
| BP-241 (OEM) | Ni-MH | 980mAh | ICOM M34, M36 | 8–9 hours | Reliable, standard model |
| BP-241 (Aftermarket) | Ni-MH | 1000–1200mAh | ICOM M34, M36 | 9–11 hours | Higher capacity, affordable |
| BP-251 (Upgrade) | Li-ion | 1150mAh | ICOM M36 only | Up to 12 hours | Lighter, longer-lasting, no memory effect |
⚠️ Note: BP-251 is not compatible with ICOM M34, only with ICOM M36. However, BP-241 is compatible with both of them, and we happen to have the relevant batteries here [batteriesglobal.co.uk]✓ Fast Shipping ✓ Order now easily and securely! ✓ CE Certified
💡 Pro Tips for Battery Maintenance
- Charge fully before first use
- Avoid overcharging or leaving the radio plugged in overnight
- Store batteries in a cool, dry place
- For Ni-MH, fully discharge once a month to avoid memory effect
- For Li-ion (BP-251), avoid full discharges for longer life
📦 Where to Buy the BP-241 Battery Replacement
You can find genuine and aftermarket BP-241 replacement batteries online on trusted marketplaces like:
- Amazon
- eBay
- ICOM-certified retailers
- Marine electronics stores
Look for keywords like “ICOM BP-241 replacement”, “compatible with M34/M36”, and “Ni-MH 980mAh” to ensure compatibility.
🧭 Final Thoughts
If you own a ICOM M34 or M36, replacing the BP-241 battery is a smart investment to extend your device’s lifespan and ensure safety while on the water. Whether you choose an original, aftermarket, or upgrade battery, it’s essential to prioritize quality and compatibility.
Whether you choose original batteries or replacement batteries, the choice depends on your needs. For occasional users, original batteries are worth the money for their warranty and reliability. For users who work frequently or want to save money, replacement batteries are a strong alternative. Our ICOM batteries have the right capacity to reliably power your devices.