The complete BYD B-Box Installation Manual, Quick Reference Guide, and Datasheet can all be found as attached files by scrolling to the bottom of this article.
The BYD-Box HV batteries are modular meaning that they are separated into sections.
- Bottom/Base with legs (black)
- Battery modules (white)
- Top/BCU (black with BYD logo)
- This is called the Battery Control Unit (BCU)
Note: This is a ground-mounted battery that cannot be mounted on the wall; however, it can be mounted to the wall
Installation Steps:
Start by setting the battery base on the ground in a flat, stable area near where the inverter will be
Adjust the legs until the base is perfectly level - using a level is recommended here
Then consecutively stack the battery modules on top of one another - they should nestle comfortably
- Finally, set the BCU on the top module but leave the lid off for now
- Make sure the switch is in the OFF position before installing the BCU
- Next you will need to run conduit between the BYD battery and the energy storage inverter
- Once conduit is ran and wire is pulled, the wires can then be landed
- Land the ground wire in the screw terminal labeled with the ground symbol in the BCU
- Land the positive wire in the terminal labeled P+ in the BCU
- Land the negative wire in the terminal labeled P- in the BCU
- In the inverter land the positive wire in terminal labeled Bat +
- In the inverter land the negative wire in terminal labeled Bat -
- The Solis Energy Storage inverter communicates with the BYD B-Box battery using CAN L and CAN H.
- The recommended wire size for communication between the battery and inverter is 22-16 AWG
- Land one wire in port 6 in the battery comm bus bar and in the terminal labeled "CANH" in the inverter
- Land another wire in port 8 in the battery comm bus bar and in the terminal labeled "CANL" in the inverter
- Ensure that the battery fuses in the inverter are not pushed in
- Flip the switch on the BYD battery up into the ON position
- Using a volt meter verify that the polarity is correct at the battery terminals in the inverter
- If the polarity is correct, push the battery fuses in
- Go to "Advanced Settings" in the inverter menus and enter the password 0010 (DOWN, DOWN, UP, ENTER)
- Go to "Battery Control" and then "Battery Select" then using the UP/Down buttons scroll until B-Box HV is selected
- Press Enter three times and then hit ESC - When "Save & Send" is highlighted press ENTER
- Go to "Battery Wakeup" and then press ENTER