Step 8b: B3RB battery charger
LiPo Battery charger
You must use a LiPo battery charger to safely charge the battery. There are very inexpensive ones available that will charge using the cell termination connectors at the expense of them being quite slow to charge. Many other types of chargers exist. When choosing a charger consider that this is a safety issue and overcharging or improperly charging can be dangerous and result in a fire.
There are many excellent LiPo battery chargers available. ISDT makes several high-end charges like the following: (This is ONLY an example, and not a specific recommendation)
Battery monitor usage
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. There is an optional RDDRONE-BMS772 BMS that can interface with the B3RB. It provides advanced battery monitoring capabilities.
Battery Alarm
LiPo batteries shoudl 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
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