Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:15

From 13.1 to 12.2

From version 12.2

edited by Admin
on 2025/02/24 11:38

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To version 1.1

edited by Admin
on 2024/12/09 12:23

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@@ -1,1 +1,1 @@
--Battery management systems.BMS Mini S.3\. Configuration.WebHome
++drafts.BMS Mini S.3\. Configuration.WebHome

Content

@@ -8,7 +8,7 @@
  To change the common BMS settings, select the "Control → Common settings" section:
--[[image:1740394523706-519.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
++[[image:1733746733473-873.png]]
  In this section:
@@ -16,18 +16,13 @@
  * Cell resistance – nominal (maximum) internal resistance of the cell, Ohm;
  * Relax time (after charging) – a relaxation time after charging, second;
  * Relax time (atfer discharging) – the relaxation time after discharging, second;
++* Number of cycles – a number of charge-discharge cycles;
  * Reset parameters– a command to reset cells state of charge, capacity, and resistance.
--The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
++The values “Capacity”, “Resistance”, “Cycles” are used to calculate the SOC of cells and the battery.
  The values of “Relax time” are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
--The “Reset parameters” will reset:
--
--* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section);
--* cell resistance to “Cell resistance” value;
--* battery capacity to “Cell capacity” value.
--
  The “Reset parameters” command is used for starting-up and adjustment of the battery.
  === SOC estimation ===
@@ -41,7 +41,7 @@
  To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
--[[image:1733746733477-590.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="166" width="800"]]
++[[image:1733746733477-590.png]]
  The following estimation algorithms supported:
@@ -49,45 +49,56 @@
  * Current and voltage (simplified);
  * Current and voltage (enhanced);
--The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
++The SOC calculation algorithm for voltage calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
--The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
++The SOC calculation algorithm “Current and voltage (simplified)” works as follows:
  * if I = 0, the battery is in a state of relaxation and the cell voltage Uocv is outside the [U,,ocv[point 1],,; U,,ocv[point 2],,], the SOC calculation based on the tabular dependence Uocv = Uocv(SOC, t °C);
  * in any other cases, the SOC value is proportional to the charge (coulomb) passed through the battery (current time integral).
--The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
++The SOC calculation algorithm “Current and voltage (enhanced)” differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
  To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section:
--[[image:1733746733478-414.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="167" width="800"]]
++[[image:1733746733478-414.png]]
  The following battery Final SOC calculation methods are supported:
--* Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
--* Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules;
--* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell has 100% SOC, b) 0% if any cell has 0% SOC;
--* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC.
++*
++** Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
++** Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules.
--Other parameters:
++To change other settings of SOC estimation, select the "Control → SOC estimation” section:
++[[image:1733746733479-261.png]]
++
++In this section:
++
  * Scale the final SOC – a flag to scale the battery SOC by the following values;
--* SOC corresponding to 0% – the battery SOC that sets to be 0%;
--* SOC corresponding to 100% – the battery SOC that sets to be 100%.
++* SOC corresponding to 0% – battery SOC that sets to be 0%;
++* SOC corresponding to 100% – battery SOC that sets to be 100%.
  * Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
--* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
--** Linear zone: point 1 – starting point of the Uocv linear zone;
--** Linear zone: point 2 – ending point of the Uocv linear zone;
++
++[[image:1733746733480-919.png]]
++
++* Linear zone: point 1 – starting point of the linear zone of Uocv dependence;
++* Linear zone: point 2 – ending point of the linear zone of Uocv dependence;
  * Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
++
++[[image:1733746733481-286.png]]
++
  * Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
++[[image:1733746733482-538.png]]
++
++
  === SOC correction ===
--The BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
++The BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see section **SOC estimation**).
  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
--[[image:1733746733483-444.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
++[[image:1733746733483-444.png]]
  In this section:
@@ -98,35 +98,29 @@
  * Ignore the linear zone – a flag to ignore linear SOC zone while correction;
  * Last correction timestamp – time when last correction was made.
--=== Resistance estimation ===
++1.
++11.
++111. Resistance estimation
  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
--{{formula fontSize="SMALL" imageType="PNG"}}
--R = \frac{U-U_{ocv}}{I_{stable}}
--{{/formula}}
++R = (U-U,,ocv,,) / I,,stable,,,
  where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge.
  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
--{{formula fontSize="SMALL"}}
--R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
--{{/formula}}
++R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
--provided that
++(Q,,max,, is the maximum cell capacity),
--{{formula fontSize="SMALL"}}
--| I_{stable2}-I_{stable1} | > 0.2 × Qmax
--{{/formula}}
++where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
--where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
--
  The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I.
  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
--[[image:1733746733484-681.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="104" width="800"]]
++[[image:1733746733484-681.png]]
  In this section:
@@ -136,64 +136,8 @@
  * Minimum SOC – minimum cell SOC value for resistance calculation;
  * Maximum SOC – maximum cell SOC value for resistance calculation.
--The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
++The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see Common settings). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
--=== Low SOC (signal) ===
--
--To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
--
--[[image:1740396460923-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable signal generation;
--* Minimum SOC, %;
--* Tolerant SOC, %;
--* Delay before setting the signal, second;
--* Delay before clearing the signal, second;
--* Lock – lock the signal until the device is reset.
--
--Signal generation conditions:
--
--* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
--
--Conditions for clearing the signal:
--
--* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
--
--(% class="box infomessage" %)
--(((
--The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
--)))
--
--=== High charging current (signal) ===
--
--To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section:
--
--[[image:1740396996935-403.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="144" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable signal generation;
--* Maximum charging current, А;
--* Tolerant charging current, А;
--* Delay before setting the signal, second;
--* Delay before clearing the signal, second;
--* Lock – lock the signal until the device is reset.
--
--Signal generation conditions:
--
--* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
--
--Conditions for clearing the signal:
--
--* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
--
--(% class="box infomessage" %)
--(((
--The "High charging current" signal is indicative and can be output to a discrete output or a power switch.
--)))
--
  === Charge map ===
  The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
@@ -202,7 +202,7 @@
  To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
--[[image:1733746766504-864.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
++[[image:1733746766504-864.png]]
  In this section:
@@ -211,22 +211,23 @@
  * Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current Kcs depending on SOC and battery temperature;
  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--[[image:1733746766506-660.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="196" width="800"]]
++[[image:1733746766506-660.png]]
  * Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor temperature;
  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--[[image:1733746766508-178.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="184" width="800"]]
++[[image:1733746766508-178.png]]
  * Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage;
  * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage.
--[[image:1733746766509-971.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="217" width="800"]]
++[[image:1733746766509-971.png]]
  Value of the charge current limit at given SOC, temperature, contactors temperature and maximum cell voltage is calculated as follows:
  Charging current limit = Maximum charging current × Kcs × Kcc × Kcv
++
  === Discharge map ===
  The BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
@@ -235,7 +235,7 @@
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section:
--[[image:1733746766511-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="149" width="800"]]
++[[image:1733746766511-477.png]]
  In this section:
@@ -244,22 +244,23 @@
  * Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature;
  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--[[image:1733746766512-300.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="195" width="800"]]
++[[image:1733746766512-300.png]]
  * Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature;
  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--[[image:1733746766513-161.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="183" width="800"]]
++[[image:1733746766513-161.png]]
  * Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on minimum cell voltage;
  * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage.
--[[image:1733746766514-686.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="215" width="800"]]
++[[image:1733746766514-686.png]]
  Value of the discharge current limit at given SOC, temperature, contactors temperature and minimum cell voltage is calculated as follows:
  Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv
++
  === Charge ===
  There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
@@ -301,16 +301,13 @@
  * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
  * If errors in the list above occur the charging contactor and allow charging contactor open.
--(% class="box infomessage" %)
--(((
--Note: when errors occur in the system, the **charging **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
--)))
++Note – When errors occur in the system, the charging contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
  When the power down request occurs, the allow charging contactor opens immediately and the charging contactor opens after the delay T,,off,,. Reclosing the charging contactor and allow charging contactor is performed if the power down request is removed.
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
--[[image:1733746766516-845.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="319" width="800"]]
++[[image:1733746766516-845.png]]
  In this section:
@@ -331,10 +331,7 @@
  * Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
  * Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
--(% class="box infomessage" %)
--(((
  Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
--)))
  === Discharge ===
@@ -374,11 +374,9 @@
  * if there is signal “Discharge request”, the charging contactor is opened and there are no errors (see the list above), then through the delay time T,,on,, the discharging contactor closes;
  * If the signal “Discharge request” disappears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
--(% class="box infomessage" %)
--(((
--Note: in case of errors in the system operation, the opening of the **discharging **contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below).
--)))
++Note – In case of errors in the system operation, the opening of the discharging contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below).
++
  The device supports controlling the precharging contactor. The duration of switching on the precharging contactor before closing the discharging (load) contactor is adjusted.
  When the power down request occurs, the discharging contactor opens after delay T,,off,,. Reclosing the discharging contactor is performed if the power down request is removed.
@@ -385,8 +385,9 @@
  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
--[[image:1733746885414-479.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="319" width="800"]]
++[[image:1733746885414-479.png]]
++
  In this section:
  * Enable – a flag to activate the discharge control;
@@ -413,8 +413,11 @@
  The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
--[[image:1733746901779-991.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="95" width="800"]]In this section:
++[[image:1733746901779-991.png]]
++
++In this section:
++
  * Enable – a flag to enable the charge/discharge controller.
  === Discharge (AUX) ===
@@ -431,8 +431,9 @@
  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
--[[image:1733746932199-845.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
++[[image:1733746932199-845.png]]
++
  In this section:
  * Enable – a flag to activate the auxiliary discharge control;
@@ -442,8 +442,9 @@
  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
  * Minimum voltage – minimum battery voltage, V;
  * Maximum voltage – maximum battery voltage, V;
--* Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
++Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
++
  === Main contactor ===
  The BMS Mini device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactors.
@@ -468,7 +468,7 @@
  To change the parameters of the main contactor, select the "Control → Main contactor" section:
--[[image:1733746797002-498.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="93" width="800"]]
++[[image:1733746797002-498.png]]
  In this section:
@@ -491,14 +491,11 @@
  * the voltage on the cell is higher than the starting voltage of the balancing;
  * the difference between the cell voltage and the minimum voltage among the cells of the battery is greater than the balancing deviation.
--(% class="box infomessage" %)
--(((
  If the BMS Mini overheats, then the balancing of the cells connected to this device will not be performed.
--)))
  To change the cell balancing parameters, select the "Control → Cell balancing" section:
--[[image:1733746797003-364.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="104" width="800"]]
++[[image:1733746797003-364.png]]
  In this section:
@@ -508,7 +508,7 @@
  ** Balance on charge or relaxed;
  ** Balance always;
--[[image:1733746797004-660.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="104" width="800"]]
++[[image:1733746797004-660.png]]
  * Minimum cell voltage to start balancing, V;
  * Balancing deviation, V.
@@ -526,19 +526,20 @@
  To change the parameters of the power down control, select the "Control → Power down" section:
--[[image:1733746797005-459.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="115" width="800"]]
++[[image:1733746797005-459.png]]
  In this section:
  * Minimum voltage to power down – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
  * Idle time to power down – a time of battery inactivity after which the battery is shut down, minute;
--* Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
++Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
++
  === Heater ===
  To change the parameters of the heater control algorithm, select the "Control → Heater" section:
--[[image:1733746808496-606.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]]
++[[image:1733746808496-606.png]]
  In this section:
@@ -559,16 +559,14 @@
  * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time.
--(% class="box infomessage" %)
--(((
  If there is the "Heater" signal, the heater contactor closes and/or a signal is output to the corresponded digital output.
--)))
++
  === Cooler ===
  To change the parameters of the cooler control algorithm, select the "Control → Cooler" section:
--[[image:1733746808497-424.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
++[[image:1733746808497-424.png]]
  In this section:
@@ -589,11 +589,9 @@
  * the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time.
--(% class="box infomessage" %)
--(((
  If there is the "Cooler" signal, the cooler contactor closes and/or a signal is output to the corresponded digital output.
--)))
++
  === Cell analysis ===
  Discharge characteristics of the battery – the dependence Uocv = Uocv (DOD) – is used to determine the tabular dependence Uocv = Uocv (SOC, t °C), which is necessary for calculating the state of charge of the battery.
@@ -607,7 +607,7 @@
  To configure parameters for determining the discharge characteristic of the battery, select the "Control → Cell analysis" section:
--[[image:1733746808498-116.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
++[[image:1733746808498-116.png]]
  In this section:
@@ -652,4 +652,5 @@
  * DOD – depth of discharge, Ah;
  * Cell – position of the analyzed cell for which OCV and Resistance values are provided;
  * OCV – cell voltage Uocv, V;
--* Resistance – cell resistance, Ohm.
++
++Resistance – cell resistance, Ohm.

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Changes for page 3.3 Control

Summary

Details

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