Icom BP-279 F1000 Compatible Battery 7.4V 2800mAh
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Icom BP-279 F1000 Compatible Battery 7.4V 2800mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Icom BP-279 F1000 Compatible Battery 7.4V 2800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
2800mAh
Icom F1000 Series — 7.4V Li-ion Replacement Battery (BP-279)
This 7.4V, 2800mAh Li-ion battery replaces the BP-279, BP-280, and BP-280LI packs used in the Icom F1000 series portable transceivers. It fits the F1000, F1000D, F1000S, and F1000T, along with 22 additional F-series variants sharing the same battery bay and connector. Voltage and capacity match OEM spec exactly.
- F1000 series platform fit: All listed F-series models run the same 7.4V two-cell Li-ion architecture with an identical battery bay, latch geometry, and BMS handshake protocol. One battery covers the full platform without modification.
- Bench tested on actual hardware: We ran this pack through a full charge cycle and PTT load simulation on the F1000 platform. The BMS accepted the charger handshake on first insertion, held voltage under transmit load, and did not trip overcurrent protection during keying.
- First insertion contact check: If the charger dock shows a fault LED on initial seating, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The F1000 dock requires a clean contact cycle to complete the BMS handshake before charging begins.
Why the F1000 drops to reduced TX power mid-shift on a new BP-279
A new Li-ion cell ships at storage voltage — typically around 3.7V per cell, not the full 4.2V per cell it holds after a complete charge. When the F1000 draws transmit current from a partially charged pack, voltage sags under RF load and the radio's protection circuit steps down TX power to stay within operating limits. This is not a faulty battery. Run a full charge cycle before the first shift and the radio will hold rated TX power through normal use.
Bar indicator showing one fewer bar than expected after installing the BP-279
The F1000 uses voltage-threshold bar indicators — each bar corresponds to a voltage band across the 7.4V nominal range. A new pack at storage voltage reads low enough to land in the second or third bar bracket even though the cell is healthy. After a full charge cycle the resting voltage will sit above 8.0V and the indicator will show the top bar. If the indicator still reads low after a complete charge, check that the dock contacts are clean and that the charge LED confirmed a full cycle before pulling the pack.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Icom
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My F1000 cuts out completely mid-transmission on the new BP-279 — is the battery tripping?
Yes — this is a BMS overcurrent response to the PTT transmit spike. When a new Li-ion pack is below full charge, internal resistance is higher and the current surge on key-up can push the BMS past its trip threshold. Charge the pack fully before use; resting voltage should reach at least 8.2V before the first shift. If cutouts continue after a full charge cycle, clean the battery contacts and confirm the dock completed its charge cycle without a fault LED.
The charger dock fault LED came on the moment I inserted the BP-279 and never cleared — what's wrong?
The dock fault LED means the pack voltage was too low for the charger to accept on the first handshake attempt. This happens when a new battery ships at deep storage voltage — the dock expects a minimum threshold before it will begin a charge cycle. Remove the battery, wait 10 seconds, wipe the gold contact strip with a dry cloth, and reseat it firmly. If the fault LED clears and charging begins, let the pack reach a full cycle before using the radio.
My F1000 worked fine for a few months, but the new pack is already showing fewer bars than the old one did after a full charge — is capacity fading already?
Shallow-cycle use degrades Li-ion cells faster than full cycles on two-way radios. If the F1000 is topped up from 70–80% repeatedly without ever running down, the cells lose calibrated range and the voltage-threshold bar indicator drops a bracket even at full charge. Run the pack down to one bar under active use, then charge fully to 8.2V or above — do this two or three times to restore the full voltage swing the indicator reads against. Avoid pulling the pack off the charger before the green full-charge LED confirms the cycle is complete.
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