Baofeng UV-82 Replacement Battery BL-8 7.4V 1300mAh
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Baofeng UV-82 Replacement Battery BL-8 7.4V 1300mAh - 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.
Baofeng UV-82 Replacement Battery BL-8 7.4V 1300mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
1300mAh
Baofeng UV-82 Series — 7.4V Li-ion Replacement Battery (BL-8)
This is a 7.4V, 1300mAh Li-ion replacement for the Baofeng BL-8 pack. It fits the UV-82, UV-8R, UV-82X, and UV-82C handhelds, along with five additional UV-82 platform variants. Voltage and connector match the original specification exactly.
- UV-82 platform compatibility: Every model in this list shares the same dual-PTT architecture, 7.4V voltage rail, and BL-8 form factor. The battery bay latch, contact pin layout, and BMS handshake protocol are identical across UV-82, UV-8R, UV-82X, and UV-82C — one pack covers the whole family.
- Bench tested on actual hardware: We cycled this pack on a UV-82 through repeated PTT keying sequences. The BMS held the output rail steady through transmit current spikes and tripped correctly at the low-voltage cutoff threshold without locking the radio out.
- First-insertion contact check: If the charger shows a fault indicator on first insertion, remove the pack, wipe the three gold contact pads on the battery base with a dry cloth, and reseat firmly. The UV-82 charger dock requires a clean contact cycle to complete the BMS handshake before charging starts.
Why the UV-82 cuts out mid-transmission on a new BL-8
A new Li-ion cell ships at storage voltage — typically 3.6–3.75V per cell, not full charge. On the UV-82, the BMS monitors cell voltage under the transmit load spike. If the resting voltage is low enough, that spike can pull the cell below the BMS cutoff threshold, dropping the radio mid-key. This is not a faulty pack. Charge the battery fully before the first transmission session and the cutout stops.
Bar indicator reads one fewer bar than expected after swap
The UV-82 uses a simple voltage-threshold bar display — it reads the cell voltage and maps it to a bar level. A new pack at storage voltage will show two or three bars, not four. This is accurate — the cell is not fully charged yet. After a complete charge cycle, the pack should read at or above 8.2V at rest, and the indicator will show full bars.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Baofeng
- 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 UV-82 drops to low TX power mid-shift even though the battery shows bars — what's happening?
This is voltage sag under sustained RF output, not a dead battery. As the cell depletes, its internal resistance rises, and the voltage dips further under the transmit load — the radio's protection circuit steps down TX power to stay within the safe operating window. The bar indicator lags behind because it samples resting voltage, not loaded voltage. If it's happening frequently, the pack needs a full charge before the next shift.
The charger dock blinks a fault LED and never starts charging the new BL-8 — how do I fix it?
The dock is rejecting the BMS handshake, usually because the gold contact pads have a thin film of oxidation or packaging residue. Remove the pack, wipe all three contact pads on the battery base with a dry cloth, and reseat it with firm downward pressure until the latch clicks. If the fault LED persists, check that the cell voltage is above 6.0V — a pack shipped very deeply discharged may need a boost-mode charger to bring it above the dock's acceptance threshold before normal charging begins.
The UV-82 shows full bars immediately after I insert the new pack, then drops to one bar within minutes of transmitting — is the pack faulty?
No — this is a BMS lockout caused by the cell starting below recovery voltage after extended storage. The bar indicator reads the open-circuit voltage, which looks healthy at rest, but the cell can't sustain the transmit current draw and the BMS trips to protect it. Take the pack off radio duty, put it on the charger dock for a full uninterrupted charge cycle, and verify the resting voltage reads at least 8.2V before use. After that first full cycle, the behaviour stops.
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