# Battery Backup for the BP41 Alarm Panel

In situations where you use your [Verkada BP41 alarm panel](https://docs.verkada.com/docs/alarm-panel-overview.pdf) in critical safety applications, we recommend to have backup power in case of a power outage.

Verkada offers the **ACC-BAT-4AH** for use with the BP41 alarm panel. The Verkada BP41 can be powered by a 12V 4.5Ah sealed lead-acid (SLA) battery as a backup power source.

<div align="left" data-with-frame="true"><img src="/files/4xETtpmQTZJYIPvYdePs" alt=""></div>

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## Install a backup battery on your BP41

Connect the **red** lead with the positive (**+**) connector on the battery and the **black** one to the negative (**-**). The battery pack can then sit inside the Verkada BP41 case.

<div align="left" data-with-frame="true"><img src="/files/WxZNljmpu4j9526poTur" alt=""></div>

## Wire 2 backup batteries to the BP41

To get double the amp hours (capacity), while maintaining the same voltage, you can connect 2 batteries in parallel (**NOT in series**) to provide twice as much battery capacity, as shown below.

<div data-with-frame="true"><img src="/files/s9tQJtLwOfOkP6gYSS8z" alt=""></div>


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