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<onlyinclude>
Zero's Battery Management System (BMS) consists of a proprietary board within the battery case to manage the cells.
[[File:BMS with potting large.png|thumb|2016 BMS with potting]]
The same board model seems to be capable and used for both single-brick ([[XMX Platform]]) bikes and power pack ([[SDS Platform]]) bikes, given software configuration changes. The board appears to be OEM-designed and has revision numbers that indicate progression over time from the 2013 model line.
;Power Note
: This is the one power drain on the vehicle when it is completely turned off with no charging, but it draws a very minor amount of power like a "sleep" mode.
{{Warning|The board is entirely solid state and not designed for fixing, only replacement.
: Any damage to this board will disable the motorcycle.}}
{{Warning|The board has full battery voltage inputs to it at all times.
: Take extreme care to avoid connections that could short, arc, or ground.
: Before accessing the BMS, first turn the bike off and disconnect charging.
:: This ensures that the contactor is open and you do not interact with the BMS while it performs a cel balancing operation.}}
; Location (SDS Platform / Monolith)
: Behind the lower front face of the battery behind the front forks/wheel.
: Remove the lower front body plastics and the front battery face to access the unit.
; Location (XMX Platform / Power Tank)
: Each separate brick has its own BMS inside the armored casing.
: The long brick has one BMS module inside the armored casing.
;Revisions
: The BMS has changed layout over the years to match the monolith (particularly for long brick architecture) and increased in physical robustness and protections.
: TODO identify those revisions and describe them.
; Protections
: The board is mounted with rubber vibration dampening.
: The board is layered with a very thick coating ("dam and fill potting") to protect the components from moisture and shock damage.
: The rubber pads covering reset buttons and LED indicator lights (for 2015+ models) have dielectric grease coating ([http://www.americansealantsinc.com/silicone-grease/ CP70] [http://www.americansealantsinc.com/wp-content/files_mf/asi70pds.pdf datasheet]) those components.
:* The covers are not there to make it waterproof, only to keep the dirt out of the grease.
:* MY13 bikes had no grease. MY14 bikes had a different grease that did not age well, and [http://www.americansealantsinc.com/silicone-grease/ CP70] is worth applying to both MY13 and MY14.
:* Maintain that coating and do not pressure wash the front of the battery casing to avoid damaging this board.
; Inspecting
: If the BMS stops working (no indication from the lights, no response to reset), the appropriate, non-warrantee-risking thing to do is take it to a dealer and they'll likely replace it under warrantee.
: But if a dealer visit is difficult or there's an emergency, a visual inspection might inform what's going on (naturally, a bike that doesn't work feels like an emergency; use your judgement).
: Basically, uncover the BMS and look for burned out components.
: There is a large pin connector which may be loose, which would explain a loss of power to the BMS. Apparently this is very difficult to work with but can be re-attached carefully.
: Don't loosen the BMS mounting without a very good reason - it's always connected to battery cell voltage by some pins on the side that run into the batter pack so a spark there might be damaging.
: If you are going to lift off the BMS, take extreme care with the fasteners and dampeners to not drop them into the battery casing.
: You'll also need to restore each and every fastener and dampener because the BMS mount prevents vibration damage.
;Diagnostics
: The mobile app can extract BMS logs, but it is a very slow and error-prone process compared to MBB log extraction.
: The front of the board has a diagnostic port for a live debugging connection.
: A cable to access the serial connection of the diagnostic port is described [http://electricmotorcycleforum.com/boards/index.php?topic=7561.0 here]
</onlyinclude>
;BMS Articles
{{Special:PrefixIndex/BMS/}}
[[Category:HV Component]]
Zero's Battery Management System (BMS) consists of a proprietary board within the battery case to manage the cells.
[[File:BMS with potting large.png|thumb|2016 BMS with potting]]
The same board model seems to be capable and used for both single-brick ([[XMX Platform]]) bikes and power pack ([[SDS Platform]]) bikes, given software configuration changes. The board appears to be OEM-designed and has revision numbers that indicate progression over time from the 2013 model line.
;Power Note
: This is the one power drain on the vehicle when it is completely turned off with no charging, but it draws a very minor amount of power like a "sleep" mode.
{{Warning|The board is entirely solid state and not designed for fixing, only replacement.
: Any damage to this board will disable the motorcycle.}}
{{Warning|The board has full battery voltage inputs to it at all times.
: Take extreme care to avoid connections that could short, arc, or ground.
: Before accessing the BMS, first turn the bike off and disconnect charging.
:: This ensures that the contactor is open and you do not interact with the BMS while it performs a cel balancing operation.}}
; Location (SDS Platform / Monolith)
: Behind the lower front face of the battery behind the front forks/wheel.
: Remove the lower front body plastics and the front battery face to access the unit.
; Location (XMX Platform / Power Tank)
: Each separate brick has its own BMS inside the armored casing.
: The long brick has one BMS module inside the armored casing.
;Revisions
: The BMS has changed layout over the years to match the monolith (particularly for long brick architecture) and increased in physical robustness and protections.
: TODO identify those revisions and describe them.
; Protections
: The board is mounted with rubber vibration dampening.
: The board is layered with a very thick coating ("dam and fill potting") to protect the components from moisture and shock damage.
: The rubber pads covering reset buttons and LED indicator lights (for 2015+ models) have dielectric grease coating ([http://www.americansealantsinc.com/silicone-grease/ CP70] [http://www.americansealantsinc.com/wp-content/files_mf/asi70pds.pdf datasheet]) those components.
:* The covers are not there to make it waterproof, only to keep the dirt out of the grease.
:* MY13 bikes had no grease. MY14 bikes had a different grease that did not age well, and [http://www.americansealantsinc.com/silicone-grease/ CP70] is worth applying to both MY13 and MY14.
:* Maintain that coating and do not pressure wash the front of the battery casing to avoid damaging this board.
; Inspecting
: If the BMS stops working (no indication from the lights, no response to reset), the appropriate, non-warrantee-risking thing to do is take it to a dealer and they'll likely replace it under warrantee.
: But if a dealer visit is difficult or there's an emergency, a visual inspection might inform what's going on (naturally, a bike that doesn't work feels like an emergency; use your judgement).
: Basically, uncover the BMS and look for burned out components.
: There is a large pin connector which may be loose, which would explain a loss of power to the BMS. Apparently this is very difficult to work with but can be re-attached carefully.
: Don't loosen the BMS mounting without a very good reason - it's always connected to battery cell voltage by some pins on the side that run into the batter pack so a spark there might be damaging.
: If you are going to lift off the BMS, take extreme care with the fasteners and dampeners to not drop them into the battery casing.
: You'll also need to restore each and every fastener and dampener because the BMS mount prevents vibration damage.
;Diagnostics
: The mobile app can extract BMS logs, but it is a very slow and error-prone process compared to MBB log extraction.
: The front of the board has a diagnostic port for a live debugging connection.
: A cable to access the serial connection of the diagnostic port is described [http://electricmotorcycleforum.com/boards/index.php?topic=7561.0 here]
</onlyinclude>
;BMS Articles
{{Special:PrefixIndex/BMS/}}
[[Category:HV Component]]
