Step 8c: Battery Monitor and Alarm

Battery monitor

MR-B3RB units have a power monitor built into the PDB board. This will tell you the total pack voltage and individual cell voltage. It will alarm when the cell voltage goes too low.

Advanced BMS

There is an optional RDDRONE-BMS772 BMS that can interface with the B3RB. It provides advanced battery monitoring capabilities.

Battery Alarm

An external battery alarm is included in the Kit

LiPo batteries should never be over-discharged. The PDB battery monitor will measure the battery voltage level, and properly running software and control software will alert the user if tbe battery is low. As an extra backup, a small battery alarm board is included, that can be attached to the battery CT leads directly. This is recommended and can save you from over discharging during development or when you may get distracted (i.e. at a tradeshow or seminar) The alarm is connected as shown in the attached photo. While it's usage is mostly self explanatory, you can learn more via YouTube tutorials such as this one: https://youtu.be/A0EjDtGSepw?si=PWPuZGCJoSq1ri9W