My Cart:

0 item(s) - £0.00
You have no items in your shopping cart.


Who needs an installer

More Views

Honeywell ADE RESON8 External Sounder Alarm Battery


Quick Overview

Replacement Honeywell RESON8 battery for External Sounder Box model 8EP420
Only 500 left

Availability: In stock

* Required Fields



Our Honeywell RESON8 XCELPLUS Extended Life model is a high capacity SAB (Siren Alarm Battery). The Extended Life model is recommended for anyone that requires more hours of backup from their siren bell box and doesn't want to replace the battery for the next 5-6 years.

The Honeywell RESON8 XCELPLUS Standard model is also suitable for your bell box, but may only offer 2-3 year life depending on the frequency of use and operating temperature.

Whenever replacing a backup battery the capacity should always be replaced like-for-like or above. Manufacturers supply a capacity battery suitable for the backup period deemed fit and suitable. E.G. If a 250mAh battery is specified for 12hrs backup in the event of a power failure, replacing this with an inferior 150mAh battery may only last 4hrs and invalidate your premises insurance policy. Replacing the 250mAh with the high capacity 300mAh battery would increase the backup duration to 20hrs or more!

The XCELPLUS Extended Life is the uses the highest capacity battery available on the market and unlike regular button batteries, it's produced using the high capacity 320mAh nickel metal hydride (NiMH) rechargeable button cells, and upgrade over the original NiCD cells for sustained output and longevity.

Additional Information


Standard: 250mAh
Extended Life: 320mAh

Arrangement 1 stack of 5
Finish Green
Voltage 6V
Cable length 150mm
Dimensions (mm) 44x25x25mm
Manufacturer's Part No. GP320BVH5A6, GP250BVH5A6, CP300H
Cell construction CP300H, NiMH
Shelf life

2-3yrs (250mA)
5-6yrs (300mA)

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.