Retevis RT22 Replacement Battery BL22 3.7V 950mAh
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Retevis RT22 Replacement Battery BL22 3.7V 950mAh - 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.
Retevis RT22 Replacement Battery BL22 3.7V 950mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
950mAh
Retevis RT22 / RT22S Series — 3.7V Li-ion Replacement Battery (BL22)
This is a 3.7V, 950mAh Li-ion replacement for the Retevis RT22, RT22S, DT22, and RT622 two-way radios. It uses OEM part numbers BL22 and BL19 and slots into the original battery bay. Swap it in when the stock pack no longer holds a charge through a full shift.
- RT22 series platform fit: The RT22, RT22S, DT22, and RT622 share the same 3.7V single-cell architecture and battery bay dimensions. One pack covers all four models because the connector pinout, BMS handshake voltage, and physical latch are identical across that production run.
- Bench tested on actual hardware: We cycled this pack through charge and transmit loads on the RT22. The BMS held steady through repeated PTT bursts, absorbed the transmit current spike without tripping, and returned to charge acceptance correctly after each discharge cycle.
- First insertion into the Retevis dock: If the charger LED blinks or shows a fault on first insertion, remove the pack and wipe the gold contact strip with a dry cloth before reseating. Retevis docks require a clean contact cycle to complete the BMS handshake — a smudged contact is the most common reason a new pack reads as a fault.
RT22 BMS trip on PTT press with a new pack
The RT22 draws a sharp current spike the moment PTT is pressed — transmit current is significantly higher than standby draw. On a new pack fresh from storage, the cell sits at around 3.6–3.7V. If the BMS reads that spike as an overcurrent event, it can trip and cut the radio mid-keying. This is not a faulty pack. Let the battery complete one full charge cycle before heavy use so the BMS calibrates its overcurrent threshold against a fully topped cell.
Bar indicator showing one fewer bar than expected on a new BL22
The RT22 uses a simple voltage-threshold bar indicator — each bar corresponds to a voltage band, not a percentage. A new pack ships at storage voltage, typically 3.6V, which sits at the top of the second bar rather than the third. This looks wrong but is not a defect. Charge the pack fully to 4.2V and the indicator will step up to its correct reading.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Retevis
- Manufacturer: CS
- Series: X-Longer
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My RT22 cuts out the moment I press PTT with the new BL22 installed — what's causing that?
A new cell at storage voltage sits around 3.6V, and the RT22's transmit current spike can push the BMS into an overcurrent trip before a full charge has been completed. The radio going silent the instant you key up — rather than mid-transmission — is the signature of this exact fault. Charge the pack fully before first heavy use. One complete charge cycle is enough for the BMS to handle the PTT surge without tripping.
The RT22 drops to noticeably weaker audio and reduced output after the radio has been transmitting for a while — is the new pack faulty?
This is voltage sag under sustained RF output, not a faulty pack. The RT22 transmits at a fixed power level and pulls consistent current; if the cell voltage dips under that load, the radio steps down TX power to protect itself. It typically recovers within seconds once you release PTT. If it happens frequently from the start, run two full charge-discharge cycles — cell impedance drops slightly after initial conditioning and the sag becomes less pronounced.
The charger dock LED keeps blinking and never moves to solid after I insert the new BL22 — how do I fix it?
A blinking fault LED almost always means the dock can't complete the BMS handshake, usually because the gold contact strip on the pack isn't making a clean connection. Remove the battery, wipe the contact strip with a dry cloth, and reseat it firmly until the latch clicks. If the LED still blinks, check that the pack is below 45°C — Retevis docks will refuse to charge a warm cell. A cool, clean pack seated correctly should trigger a solid charge LED within 30 seconds.
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