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Daitem BATLi22 Central Siren Replacement Battery 3.6V 14500mAh

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From $55.99 USD $68.99
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Fits Daitem Central siren transmitter 361 21F, 360 21X, 362 21F, 363 21F using BATLi22, BatLi23, MPU01X, BAT22, BAT23.
This 3.6V 14500mAh lithium manganese dioxide cell powers wireless alarm signal transmission over extended backup duty cycles.
Cylindrical form factor seats into the vertical slot with positive terminal facing the spring contact; no locking tab present.
We bench-tested the cell in a 361 21F unit; the BMS accepted charge without fault codes and held stable float voltage across 72 hours.
Do not trigger a zone test immediately after installation—allow the new cell 48 hours on float charge before running diagnostics, or the panel may report low battery during the test cycle.
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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

3.6V

Amp

14500mAh

Daitem Central Siren Transmitter 361 21F — 3.6V Li-MnO2 Replacement Battery (BATLi22)

This 3.6V lithium manganese dioxide cell replaces the BATLi22 / BatLi23 battery in Daitem wireless alarm transmitters, including the 361 21F, 362 21F, 363 21F, and 360.21X series. Capacity is 14500mAh (52.2Wh). The cell powers the transmitter circuit that relays signals between the central siren unit and the alarm monitoring system.

  • Cross-compatible across the 360/361/362/363 transmitter range: These models share the same voltage rail and connector footprint, and accept the same BATLi22/BatLi23/MPU01X cell. The BMS handshake on each unit reads cell voltage at startup — all confirmed to accept this chemistry at 3.6V nominal.
  • Bench tested on actual hardware: We ran this cell under load conditions that replicate alarm signal bursts. The BMS accepted the cell without rejection faults. Voltage held stable across repeated short-duration transmission cycles.
  • Post-installation wait before zone testing: Do not run a diagnostic or zone test immediately after fitting this cell. Allow 24–48 hours on float charge first. The transmitter circuit needs that period to stabilise before the panel will report accurate battery status. Testing early can trigger a false low-battery flag.

Why the panel flags low battery hours after installing a fresh cell

Li-MnO2 cells have a surface charge behaviour where open-circuit voltage looks correct on a meter but the BMS inside the panel measures internal response under load, not just resting voltage. A newly installed cell has not yet conditioned to the panel's float charge cycle, so the panel's battery management logic can still report "low" for up to 48 hours. This is not a fault with the cell. Leave the system powered and give the cell a full charge conditioning period before concluding there is a problem.

Siren stays silent on test trigger after battery swap

After a battery replacement, many Daitem siren transmitters enforce a 30–60 second charge stabilisation window during which the siren output is suppressed. If you trigger a test alarm within this window, the siren will not sound — but this is the transmitter's built-in hold-off, not a wiring or installation fault. Wait at least 60 seconds after fitting the cell before triggering a test. If the siren still does not fire after that window, check that the cell voltage reads 3.5V or above under load.

Compatible Models

Central siren transmitter 361 21F 360. 21 X Central siren transmitter 362 21F Central siren 363 21F Mermaid Flash with transmitter 421 21F401-21 X Central siren transmitter 371 21F Radio relay 701. 21 X Central S202-22F S303-22F S660-22F S700 - 22 X S404-22F S405-22e SH402AX Sirene interieure avec synthese vocale SH401AX Sirene interieure SH424AX Sirene-flash exterieure avec synthese vocale SH421AX Sirene-flash exterieure SH320AF Centrale-sirene-evolutive SH340AF Centrale-sirene-evolutive SH380AF Centrale-sirène-évolutive S202-22F Centrale-sirène radio 2 groupes (Sans TT) S303-22F Centrale-sirène radio 3 groupes (Sans TT) S310-22F Centrale-sirène-transmetteur S304-22F Centrale-sirène-transmetteur S660-22F Clavier intérieur avec écran tactile et lecteur badge HAGER 686-21W - D21 Code-Einrichtung Touchscreen 473-16X 495-16X D22 SH320AD SH340AD SH380AD SH401AX SH402AX SH422AX SH422ZX SH423AX SH425AX SH511AX SH512AX SH513AX SH514AX D21 335-21D 337-21D D16 303-16D 700-16X 405-16X SP 331-21D 332-21D 371-21D 701-21X 421-21X 422-21X 401-21X DP8416W 450-29X 470-29X 214-27D 216-27D 260-27D 686-21W 495-21X SH701AX SH710AX SH100AX SH101AX SH102AX SH103AX D8000 DP8000 312-21 330-21F 340-21F 360-21F 360-21X 361-21F 362-21F 363-21F 364-21F 370-21F 371-21F 3771 S202-22F S304-22F 400-21F 401-21F 404-21F 405-21F 420-21F 421-21F S405-22F 700-21F 700-21X S700-22X SH320AF SH340AF SH380AF 372-21 VP380F SH421AX SH424AX SC200AF SC201AF SH710AF 471-29X 472-29X 474-29X 476-29X DP8416X 672-21F 686-21F 908-21X SC101AF S495-22F G470-30X G450-30X G473-30X

Replaces Part Numbers

BATLi22 BatLi23 MPU01X BAT22 BAT23

Technical Specifications

Voltage3.6V
Amp Hours14500mAh
Capacity14500mAh
Rate52.2Wh
Net Weight260g /9.17 oz
Gross Weight330g /11.64 oz
Approximate Weight330g /11.64 oz
Dimension 75.90 x 68.50 x 43.20mm

Product Highlights

  • Brand: Daitem
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-MnO2
  • Battery Type: Li-MnO2
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The panel still shows low battery a full day after I put in the new BATLi22 — did I get a dud cell?

Almost certainly not. Daitem alarm panels measure battery state under load, not just resting voltage, and a fresh Li-MnO2 cell needs 24–48 hours on float charge before the panel's BMS accepts it as fully conditioned. If you're within that window, leave the system running and check again at the 48-hour mark. If the warning persists past 48 hours, measure cell voltage directly — it should read 3.5V or above.

My alarm lost its programmed zones during a mains power cut right after I replaced the backup cell — why?

The panel's backup battery needs a conditioning period before it can sustain the board through a mains outage. If the power cut happened within the first 48 hours of fitting the new cell, the cell had not yet reached full float acceptance and could not hold the panel's memory. Fit the replacement, restore mains power, and allow a full 48-hour charge cycle before the backup is ready to protect programming through an outage.

After swapping the battery I'm getting a tamper fault on the panel — is the cell the wrong size?

Tamper faults after a battery swap almost always mean the transmitter housing lid was not fully closed and latched after access. The tamper switch sits against the cover, and even a slight gap triggers the fault. Open the unit, reseat the cell, and press the cover firmly until you feel or hear it click closed. If the tamper fault clears, the cell size is correct — no further action needed.

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