Hytera TC-610 Replacement Battery BL1204 7.4V 2000mAh
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Hytera TC-610 Replacement Battery BL1204 7.4V 2000mAh - 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.
Hytera TC-610 Replacement Battery BL1204 7.4V 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
2000mAh
Hytera TC-610 / TC-620 Series — 7.4V Li-ion Replacement Battery (BL1204 / BL2001)
This is a 7.4V, 2000mAh Li-ion replacement battery for the Hytera TC-610, TC-610P, TC-618, and TC-620 portable two-way radios. It uses OEM part numbers BL1204 and BL2001. The cell fits the standard battery bay on these handhelds and communicates with the radio's BMS over the same three-contact interface as the original pack.
- TC-610 / TC-620 platform compatibility: These four models share the same battery bay geometry, contact pinout, and 7.4V voltage rail. The BMS handshake protocol is identical across the range, so one pack covers all four without any hardware modification.
- Bench tested on actual hardware: We cycled this pack on a TC-620 unit through full charge and discharge passes. The BMS held cutoff voltage at 6.0V on discharge and accepted charge current correctly at the dock without triggering fault indicators.
- First insertion into the charger dock: If the dock LED blinks amber and does not transition to solid red on first insertion, remove the pack and wipe the gold contact strip with a dry cloth. The TC-610 series dock requires a clean contact cycle to complete the BMS handshake — a fingerprint or oxidation film on the contacts is enough to block it.
Why the TC-610 cuts out mid-transmission on a new BL1204 pack
New Li-ion cells ship at storage voltage — typically 3.7–3.8V per cell, which puts a fresh two-cell pack around 7.4–7.6V at rest. When PTT is pressed, transmit current spikes sharply, and the BMS interprets the voltage sag under that load as a low-cell condition. The radio drops out of transmit before the pack is anywhere near depleted. Running one full charge cycle before field use raises the cell voltage to 4.1–4.2V per cell, which gives the BMS enough headroom to pass the transmit current spike without tripping.
TC-610 bar indicator shows one bar on a fully charged new pack
The TC-610 series reads remaining charge from cell voltage thresholds — not a fuel gauge chip. A pack that has just come off the charger for the first time may show one or two bars if the cells have not yet been cycled. The voltage-to-bar mapping recalibrates across the first two to three full charge and discharge cycles. After the second full cycle, resting cell voltage should read 8.3–8.4V across the pack terminals, and the bar indicator will track correctly from that point.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Hytera
- 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 TC-620 dock goes straight to a blinking amber light and never starts charging the new BL1204 — what's wrong?
The TC-610 and TC-620 dock reads the BMS handshake through the gold contact strip before it begins charging. If those contacts carry any oil, dust, or oxidation, the dock stalls and blinks instead of moving to solid red. Remove the pack, wipe all three gold contacts on both the battery and the dock cradle with a dry cloth, then reseat firmly. If the dock then shows solid red, charging has started normally.
The TC-610 drops to noticeably weaker audio and lower TX power about halfway through the shift — is the new pack faulty?
This is voltage sag under sustained RF output, not a faulty cell. When the radio holds a long transmission, current draw is high enough that cell voltage drops temporarily below the radio's full-power threshold, and the radio steps down TX output to protect the circuit. Shorten transmission bursts where possible and allow a brief pause between long calls — this lets the cell voltage recover between draws. If sag is happening early in the shift, check that the pack completed at least one full charge cycle before use.
The BL2001 pack sat in a drawer for several months and now the dock won't accept it at all — no LEDs, nothing.
Extended storage with no charge cycles can drop cell voltage below the dock's acceptance threshold, typically around 2.5V per cell. At that level the dock detects an out-of-range pack and refuses to begin charging. Use a bench charger or a Li-ion recovery charger set to 7.4V at a low current (around 100mA) to raise the pack voltage above 6.0V. Once it clears that floor, reseat it in the TC-610 dock and it should begin a normal charge cycle.
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