The Basement Watchdog BW-27AGM battery backup powers sump pumps during outages.
The Basement Watchdog maintenance-free AGM battery eliminates daily fluid checks for backups.
BW-27AGM backup system powers compatible sump pumps during power outages.
40-hour protection on compatible Basement Watchdog models during outages.
48-hour protection for BWSP+ and related systems during outages.
80-hour protection on emergency and combination sump pump systems.
Remote terminal compatibility for older Basement Watchdog models with maintenance-free battery.

THE BASEMENT WATCHDOG

The Basement Watchdog BW-27AGM Maintenance Free AGM Battery for Backup Sump Pumps

High-performance tools and home improvement made for confident daily results

$287.93

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium tools and home improvement quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Return & RefundEasy returns and policy details Shipping PolicyDelivery process and tracking info
Share

Why customers choose TaskHolt Tools

Maintenance-free standby power for backup sump pumps

Power outages can leave basements vulnerable. The Basement Watchdog BW-27AGM provides a maintenance-free AGM battery option designed to stay ready when you need it most. This standby unit supports a range of Basement Watchdog sump pump configurations, offering a practical, plug-and-play solution that reduces the daily upkeep while keeping critical protection within reach.

What makes the BW-27AGM stand out

  • Maintenance free: no need to add battery fluid or distilled water, simplifying setup and ongoing care.
  • Variable protection duration: up to 40 hours on select Big Dog configurations, up to 48 hours on Special + and related systems, and up to 80 hours on Emergency and combined setups—useful for extended outages with a low-duty cycle.
  • Broad compatibility with Basement Watchdog lines: designed to work with many models, including older pre-2014 versions that include a Remote Terminal (note: verify compatibility to avoid nuisance alarms).

How it fits into daily life

In routine operation, the BW-27AGM sits quietly in the backup stack, ready to power a sump pump during a blackout. The maintenance-free design means fewer things to monitor, translating into a smoother experience when weather disrupts power and pumps are needed most.

Practical benefits you may notice

  • Reliable readiness during outages: standby power helps ensure your sump pump can respond when main power drops or fails.
  • Low-maintenance convenience: avoid regular fluid checks and water top-ups for a calmer, cleaner setup.
  • Flexible use with multiple systems: supports different Basement Watchdog configurations, including standby and combination configurations.

For homes with varied sump pump arrangements, the BW-27AGM offers a practical path to maintain operation during extended power events. Always confirm model compatibility with your specific system to ensure optimal performance and to minimize false alarms.

FAQ

Q: What is the BW-27AGM battery used for?

A: A maintenance-free standby battery designed to power backup sump pumps during power outages.

Q: Is this battery compatible with older Basement Watchdog systems?

A: Older pre-2014 models with Remote Terminal may be compatible; verify compatibility to avoid false alarms.

You may also like