CS-DSC491BT Battery – DSC 2 way Wireless external siren Alexor alarms Impassa wireless siren WT4911 WT4911B WT4911Bm WT4911R WT4911R Wireless Outdoor Sire WT8911 ER34615M-T1 WT4911BATT Replacement

CS-DSC491BT Battery Replacement

Premium replacement battery for DSC 2 way Wireless external siren Alexor alarms Impassa wireless siren WT4911 WT4911B WT4911Bm WT4911R WT4911R Wireless Outdoor Sire WT8911 ER34615M-T1 WT4911BATT. 19000mAh 3.6V Li-MnO2 — engineered to original specifications and certified for safe transport.

Model No. CS-DSC491BT
Fits DSC 2 way Wireless external siren Alexor alarms Impassa wireless siren WT4911 WT4911B WT4911Bm WT4911R WT4911R Wireless Outdoor Sire WT8911 ER34615M-T1 WT4911BATT
Capacity 19000mAh
Voltage 3.6V
Energy 68.4Wh
Chemistry Li-MnO2
Dimensions 62.30 x 34.50 x 33.20mm
Weight 112g
OEM Part No. WT4911BATT, ER34615M-T1

Compatible Devices

  • WT4911
  • WT8911
  • WT4911B
  • WT4911R
  • WT4911Bm
  • Alexor alarms
  • Impassa wireless siren
  • 2 way Wireless external siren

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$32.99per unit · free US shipping
Buy Now — $32.99 Full Spec Sheet
  • Volume discounts from 10 pcs (up to 10% off)
  • UN 38.3 certified + MSDS/SDS provided
  • Free US shipping on every order
  • B2B invoicing & wholesale support

FAQ

Is this battery compatible with my device?

The CS-DSC491BT is a replacement battery for DSC 2 way Wireless external siren Alexor alarms Impassa wireless siren WT4911 WT4911B WT4911Bm WT4911R WT4911R Wireless Outdoor Sire WT8911 ER34615M-T1 WT4911BATT. See the compatible device list above for verified fits. Match your original battery's model or OEM part number before ordering.

What certifications does this battery have?

All Estry batteries ship with UN 38.3 transport certification and MSDS/SDS documentation, required for compliant air and ground shipping.

Do you offer wholesale pricing?

Yes — volume discounts apply automatically: 5% off at 10+, 6% at 20+, 8% at 50+, and 10% at 100+ pieces. US shipping is free on every order.