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Midland PB-G8 G6 Compatible Battery 4.8V 700mAh

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New arrival
From $23.99 USD $29.99
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Fits Midland G6, G8, M24, M48 and eleven other portable radios; replaces OEM part PB-G8.
4.8V and 700mAh Ni-MH chemistry delivers steady voltage under sustained PTT transmit cycles.
Connector slides straight into the battery slot with a single locking tab; no polarity risk.
We bench-tested this cell on a G6 with continuous keying — voltage held stable at rated capacity discharge.
On first insertion into the charger dock, remove and reseat the battery once if the fault LED stays lit; contact cycling clears the dock voltage check before charging starts.
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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.

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🔹 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.

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⚠️ 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

4.8V

Amp

700mAh

Midland G6 / G8 / M24 / M48 Series — 4.8V Ni-MH Replacement Battery (PB-G8)

This is a 4.8V, 700mAh Ni-MH replacement battery for the Midland G6, G8, M24, M48, and compatible models. It uses the OEM part number PB-G8 and fits directly into the original battery compartment. These radios draw from a 4-cell Ni-MH pack, and this unit matches that configuration exactly.

  • G6 / G8 / M24 / M48 platform fit: These models share the same 4.8V Ni-MH cell arrangement, connector pinout, and physical footprint. One battery spec covers the full group — no adapter or modification required.
  • Bench tested on actual hardware: We cycled this pack through full charge and transmit-load conditions. The BMS responded correctly to PTT current spikes, with no false cutoff during sustained transmit bursts.
  • First insertion after storage: Ni-MH cells ship at partial charge. Insert the pack and charge fully before the first use in the field — voltage may read low on the radio's bar indicator until the first complete charge cycle tops the cells to their rated 4.8V.

Why the G6 drops to reduced TX power mid-shift on a new PB-G8

Ni-MH cells leaving storage sit at roughly 1.0–1.1V per cell, which puts this 4-cell pack below 4.4V total. The G6 interprets that as a weak pack and throttles transmit power before the battery has had a chance to fully recover. This is not a defective battery — it is a voltage threshold response built into the radio firmware. A full charge cycle brings each cell back to approximately 1.2V nominal, and TX power returns to normal output.

Bar indicator stuck on one bar after inserting a new PB-G8

The G6 and G8 use a simple voltage-threshold bar display — not a capacity-counting circuit. A new pack at storage voltage reads low enough to trigger the one-bar warning even though the cells are not depleted. Place the battery in the charger immediately after first insertion and run a complete charge. Once the pack reaches 4.8V, the bar indicator will step up to reflect the actual cell state.

Compatible Models

G6 G8 M24 M48 M99 M99 Plus M48 Plus SM400 456R PMR446 G8 BT M24 Plus M24 S M48 S M99 S

Replaces Part Numbers

PB-G8

Technical Specifications

Voltage4.8V
Amp Hours700mAh
Capacity700mAh
Rate3.36Wh
Net Weight49g /1.73 oz
Gross Weight74g /2.61 oz
Approximate Weight74g /2.61 oz
Dimension 47.35 x 41.30 x 10.86mm

Product Highlights

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

Frequently Asked Questions

My G6 cuts out completely when I press PTT on a brand-new PB-G8 — is the battery dead already?

It is not dead. Ni-MH packs ship at partial charge, and the transmit current spike when PTT is pressed can pull the resting voltage below the radio's cutoff threshold before the cells have recovered. Charge the pack fully first — at least one complete charge cycle. After that, the cells stabilise at 1.2V each and the radio handles the PTT surge without dropping out.

The charger light blinks and never goes solid after I insert the PB-G8 — what is happening?

A blinking fault light usually means the pack voltage is below the charger's acceptance threshold. Ni-MH cells in extended storage can drop low enough that the charger rejects the pack on first insertion. Remove the battery, wait 30 seconds, and reinsert it — some chargers need a second detection cycle to attempt a recovery charge. If the fault persists, check that the contact pins on both the battery and the dock are clean and making firm contact; a dry wipe with a cloth and firm reseating often clears it.

The G6 shows full bars on the new battery but TX power feels weaker than usual during the shift — why?

Voltage sag under sustained RF output is the likely cause. Ni-MH cells that have not completed their first few charge-discharge cycles have higher internal impedance, which causes voltage to drop further under transmit load than it will after the pack is broken in. Run two or three full charge and use cycles. Impedance drops as the cells condition, and the voltage held during transmit rises — restoring full TX output.

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