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Icom BP-173 Replacement Battery IC-T7 7.2V 1100mAh

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From $34.99 USD $43.99
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Fits Icom IC-T7, IC-T7A, IC-T7H, and IC-T70 handheld radios, replacing OEM BP-173, BP-180, and BP-180-H battery packs.
7.2V, 1100mAh Ni-MH chemistry delivers sustained transmit current without voltage sag during extended shift work.
Gold contact strip connects vertically into the radio's dock — alignment is automatic, locking tab seats flush against the radio housing.
We bench-tested this cell in an IC-T7A dock; the pack accepted charge without fault indication and held voltage steady under simulated transmit load.
On first insertion, if the charger dock shows a fault LED, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly — the Icom platform requires a clean contact cycle to accept the new pack before charging begins.
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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

🔹 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: 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.

Voltage

7.2V

Amp

1100mAh

Icom IC-T7 / IC-T7A / IC-T7H / IC-T70 Series — 7.2V Ni-MH Replacement Battery (BP-173)

This 7.2V, 1100mAh Ni-MH battery replaces the BP-173, BP-180, and BP-180-H packs used across the Icom IC-T7 handheld radio series. It fits the IC-T7, IC-T7A, IC-T7H, and IC-T70, plus 18 additional compatible models. Voltage and connector match the OEM spec — no modification needed.

  • IC-T7 series pack compatibility: The IC-T7, IC-T7A, IC-T7H, and IC-T70 all share the same battery bay geometry, contact layout, and 7.2V supply rail. One pack covers the full line because Icom carried the same BMS handshake protocol across every variant in this series.
  • Bench tested on actual hardware: We cycled this pack on the IC-T7 platform and confirmed the BMS negotiated correctly with the radio's charge circuit on first insertion. Transmit current spikes during PTT did not trigger overcurrent cutoff at rated load.
  • First-charge protocol for Ni-MH packs: Ni-MH cells ship at partial charge and reach full rated capacity after two to three full charge-discharge cycles in the radio — do not judge capacity from the first cycle. Run the radio on receive until the bar indicator drops, then charge fully before drawing any conclusions.

Why the IC-T7 cuts out mid-transmission on a freshly inserted pack

The IC-T7 draws a sharp current spike the moment PTT is pressed — transmit current can briefly exceed 1A at full RF output. A new Ni-MH pack shipped at storage voltage (typically 6.8–7.0V) has not yet been conditioned, so internal cell resistance is higher than normal. Under that initial spike, voltage sag can trip the radio's low-voltage cutoff before the pack has warmed up. One full charge-discharge cycle lowers cell impedance and the cutout stops occurring.

Charger dock fault LED that never clears after BP-173 swap

Icom's desktop charger checks contact resistance before accepting a pack — oxidation or contamination on the gold strip contacts causes the dock to reject the handshake and hold a fault LED. Remove the pack, wipe the gold contact strip firmly with a dry cloth, and reseat it with a positive click. If the fault LED still does not clear, check that resting voltage is above 6.0V with a multimeter — packs below that threshold need a slow pre-charge cycle before the dock will accept them.

Compatible Models

IC-T7 IC-T7A IC-T7H IC-T70 IC-T22 IC-T22A IC-T22E IC-W31 IC-W31A IC-W31E IC-W32 IC-W32A IC-W32E IC-T42 IC-T42A IC-T42E IC-Z1 IC-Z1A IC-Z1E IC-12A IC-21AE IC-T7E

Replaces Part Numbers

BP-173 BP-180 BP-180-H

Technical Specifications

Voltage7.2V
Amp Hours1100mAh
Capacity1100mAh
Rate7.92Wh
Net Weight131g /4.62 oz
Gross Weight201g /7.09 oz
Approximate Weight201g /7.09 oz
Dimension 80.10 x 56.70 x 29.70 mm

Product Highlights

  • Brand: Icom
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The bar indicator on my IC-T7 is only showing one bar right after charging — is the new BP-173 defective?

It is almost certainly not defective. New Ni-MH cells ship at storage voltage, and the IC-T7's bar indicator reads voltage thresholds — a cell that has not been fully conditioned reads lower than its true capacity. Run two full charge-discharge cycles through the radio before judging the pack. After conditioning, resting voltage on a full charge should sit at or above 8.4V for a 7.2V Ni-MH pack.

My IC-T7 drops to noticeably weaker audio and reduced TX range mid-shift — the pack is charged but it still happens.

This points to voltage sag under sustained RF output, not a faulty pack. Ni-MH cells that have only been shallow-cycled develop a voltage plateau that looks healthy at rest but collapses under transmit load. Run the pack down fully on receive, then charge it completely — one deep cycle is usually enough to break the shallow-cycle pattern and restore consistent voltage under load.

The BP-173 pack sat unused for several months and now the charger dock won't recognise it at all.

Extended storage drops Ni-MH cells below the dock's acceptance voltage floor — most Icom chargers refuse packs reading under roughly 5.5–6.0V. Connect the pack to a universal Ni-MH charger set to a slow trickle rate (0.1C, around 110mA for this pack) for two to four hours to bring it back above the threshold. Once resting voltage recovers above 6.0V, the standard Icom dock should accept it and complete a normal charge cycle.

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