diff --git a/lua/entities/gmod_subway_81-714_lvz/init.lua b/lua/entities/gmod_subway_81-714_lvz/init.lua
index d825644..b79f73c 100644
--- a/lua/entities/gmod_subway_81-714_lvz/init.lua
+++ b/lua/entities/gmod_subway_81-714_lvz/init.lua
@@ -128,7 +128,8 @@ function ENT:Initialize()
             Pos = Vector(-177, -66, -50), Radius = 20,
         },
     }
-
+    self.BattCurrent = 0
+    self.eds_eq = 0
 
     -- Cross connections in train wires
     self.TrainWireInverts = {
@@ -226,6 +227,9 @@ end
 function ENT:TrainSpawnerUpdate()
     local typ = self:GetNW2Int("Type")
     local num = self.WagonNumber
+    self.Battery:TriggerInput("CarType",1)
+    self.Battery:TriggerInput("InitialVoltage",math.random(62,75))
+    self.Battery:TriggerInput("Dischargeable",self:GetNW2Bool("BattCharge"))
     math.randomseed(num+817171)
     local kvr=false
     local passtex = "Def_717SPBWhite"
@@ -365,8 +369,8 @@ function ENT:Think()
     self:SetPackedRatio("TLPressure", Pneumatic.TrainLinePressure/16.0)
     self:SetPackedRatio("BCPressure", Pneumatic.BrakeCylinderPressure/6.0)
 
-    self:SetPackedRatio("BatteryVoltage",Panel["V1"]*self.Battery.Voltage/150.0)
-    self:SetPackedRatio("BatteryCurrent",Panel["V1"]*math.Clamp((self.Battery.Voltage-75)*0.01,-0.01,1))
+    self:SetPackedRatio("BatteryVoltage",(self.eds_eq)/150.0)
+    self:SetPackedRatio("BatteryCurrent",self.BattCurrent/1000)
     self:SetPackedRatio("EnginesCurrent", 0.5 + 0.5*(self.Electric.I24/500.0))
 
     self:SetPackedBool("Compressor",Pneumatic.Compressor > 0)
diff --git a/lua/entities/gmod_subway_81-714_mvm/init.lua b/lua/entities/gmod_subway_81-714_mvm/init.lua
index e444f6a..95179eb 100644
--- a/lua/entities/gmod_subway_81-714_mvm/init.lua
+++ b/lua/entities/gmod_subway_81-714_mvm/init.lua
@@ -131,6 +131,8 @@ function ENT:Initialize()
             Pos = Vector(-177, -66, -50), Radius = 20,
         },
     }
+    self.BattCurrent = 0
+    self.eds_eq = 0
 
     -- Cross connections in train wires
     self.TrainWireInverts = {
@@ -228,6 +230,9 @@ end
 
 function ENT:TrainSpawnerUpdate()
     self:SetNW2Bool("Custom",self.CustomSettings)
+    self.Battery:TriggerInput("CarType",1)
+    self.Battery:TriggerInput("InitialVoltage",math.random(62,75))
+    self.Battery:TriggerInput("Dischargeable",self:GetNW2Bool("BattCharge"))
     local num = self.WagonNumber
     math.randomseed(num+817171)
     if self.CustomSettings then
@@ -357,23 +362,9 @@ function ENT:Think()
     self:SetPackedRatio("BCPressure", Pneumatic.BrakeCylinderPressure/6.0)
 
 ----------------------------------*****************************--------------------------------
-    --10th wire voltage readout imitation depending on the BPSNs and EKK state, not on the wagon battery switch state
-    local hvcounter = 0
-    local hvcar = nil
-    local vdrop = 1.125*(#self.WagonList)
-    for k,v in ipairs(self.WagonList) do
-	if v.PowerSupply.X2_2 > 0 and v.A24.Value > 0 then
-            hvcounter = hvcounter + 1
-            hvcar = hvcar or v
-            vdrop = vdrop - 1.125
-        else
-            vdrop = vdrop - ((v.A56.Value == 0 and 0.4 or (v.VB.Value == 0 and 0.4 or 0)) + (v.LK4.Value == 0 and 0.725 or 0))
-        end
-    end
-    local PCV_o = hvcounter > 0 and math.Clamp(76+(hvcar.Electric.Aux750V - 600)*8/375, 76, 84) - vdrop or self.WagonList[1].Battery.Voltage
     --imitating converter overload protection only when control circuits are energized and at least one PC on the train is off; pretty useless btw (but fun)
-    local pcloadratio = #self.WagonList/(hvcounter > 0 and hvcounter or 0.5)
-    local _A = 25*(6 - 6/(5.01))                                          --assuming one PC on 6 cars can work for 25 secs while the cars' CCs are energized
+    local pcloadratio = #self.WagonList/(self.Battery.hvcounter > 0 and self.Battery.hvcounter or 0.5)
+    local _A = 90*(6 - 6/(5.01))                                          --assuming one PC on 6 cars can work for 90 secs while the cars' CCs are energized
     if pcloadratio > 1 and pcloadratio <= #self.WagonList and self.LK4.Value > 0 and self.PowerSupply.X2_2 > 0 and not self.pcrlxtimer then
         self.pcprotimer = self.pcprotimer or CurTime()
         --hyperbolic function of PC operating time depending on load coeff
@@ -394,8 +385,8 @@ function ENT:Think()
     self.PowerSupply:TriggerInput("3x2",self.pcrlxtimer and 1 or 0) 	        --BPSN overheat protection in case of RZP button is being pressed constantly
 ----------------------------------*****************************--------------------------------
     
-    self:SetPackedRatio("BatteryVoltage",Panel["V1"]*PCV_o/150.0)
-    self:SetPackedRatio("BatteryCurrent",Panel["V1"]*math.Clamp((self.Battery.Voltage-75)*0.01,-0.01,1))
+    self:SetPackedRatio("BatteryVoltage",(self.eds_eq)/150.0)
+    self:SetPackedRatio("BatteryCurrent",self.BattCurrent/1000)
     self:SetPackedRatio("EnginesCurrent", 0.5 + 0.5*(self.Electric.I24/500.0))
 
     self:SetPackedBool("Compressor",Pneumatic.Compressor > 0)
diff --git a/lua/entities/gmod_subway_81-717_lvz/init.lua b/lua/entities/gmod_subway_81-717_lvz/init.lua
index 9c0de18..f203f24 100644
--- a/lua/entities/gmod_subway_81-717_lvz/init.lua
+++ b/lua/entities/gmod_subway_81-717_lvz/init.lua
@@ -243,6 +243,8 @@ function ENT:Initialize()
     self.PassengerDoor = false
     self.OtsekDoor1 = false
     self.OtsekDoor2 = false
+    self.BattCurrent = 0
+    self.eds_eq = 0
 
     self.Lamps = {
         broken = {},
@@ -334,6 +336,15 @@ function ENT:TrainSpawnerUpdate()
     local typ = self:GetNW2Int("Type")
     local num = self.WagonNumber
     self:SetNW2Bool("Custom",self.CustomSettings)
+    self.Battery:TriggerInput("CarType",1)
+    self.Battery:TriggerInput("InitialVoltage",math.random(62,75))
+    self.Battery:TriggerInput("Dischargeable",self:GetNW2Bool("BattCharge"))
+    local ccc = 0
+    self.ComputerCar = false
+    for k,v in ipairs(self.WagonList) do
+        if v.AR63 and v.ComputerCar then ccc = ccc + 1; break end
+    end
+    if ccc == 0 then self.ComputerCar = true end
     math.randomseed(num+817171)
     local kvr=false
     local seats=false
@@ -685,7 +696,7 @@ function ENT:Think()
     self:SetPackedRatio("EnginesVoltage", self.Electric.Aux750V/1000.0)
     self:SetPackedRatio("EnginesCurrent2",  0.5 + 0.5*(self.Electric.I13/500.0))
     self:SetPackedRatio("EnginesCurrent", 0.5 + 0.5*(self.Electric.I24/500.0))
-    self:SetPackedRatio("BatteryVoltage",Panel["V1"]*self.Battery.Voltage/150.0)
+    self:SetPackedRatio("BatteryVoltage",(self.eds_eq)/150.0)
     self:SetPackedBool("Compressor",self.Pneumatic.Compressor > 0)
     self:SetPackedBool("Buzzer",Panel.Ring > 0)
     self:SetPackedBool("RK",self.RheostatController.Velocity ~= 0.0)
diff --git a/lua/entities/gmod_subway_81-717_lvz_custom.lua b/lua/entities/gmod_subway_81-717_lvz_custom.lua
index e973c6c..9e1c7dc 100644
--- a/lua/entities/gmod_subway_81-717_lvz_custom.lua
+++ b/lua/entities/gmod_subway_81-717_lvz_custom.lua
@@ -110,4 +110,5 @@ ENT.Spawner = {
         ent.Pneumatic.TrainLinePressure = val==3 and math.random()*4 or val==2 and 4.5+math.random()*3 or 7.6+math.random()*0.6
         if val==4 then ent.Pneumatic.BrakeLinePressure = 5.2 end
     end},
+    {"BattCharge","Spawner.717.Chargeable","Boolean"}
 }
diff --git a/lua/entities/gmod_subway_81-717_mvm/init.lua b/lua/entities/gmod_subway_81-717_mvm/init.lua
index 3ed1da5..f71aad0 100644
--- a/lua/entities/gmod_subway_81-717_mvm/init.lua
+++ b/lua/entities/gmod_subway_81-717_mvm/init.lua
@@ -223,6 +223,8 @@ function ENT:Initialize()
     self.PassengerDoor = false
     self.OtsekDoor1 = false
     self.OtsekDoor2 = false
+    self.BattCurrent = 0
+    self.eds_eq = 0
 
     self.Lamps = {
         broken = {},
@@ -381,6 +383,15 @@ function ENT:TrainSpawnerUpdate()
     --
     local num = self.WagonNumber
     self:SetNW2Bool("Custom",self.CustomSettings)
+    self.Battery:TriggerInput("CarType",1)
+    self.Battery:TriggerInput("InitialVoltage",math.random(62,75))
+    self.Battery:TriggerInput("Dischargeable",self:GetNW2Bool("BattCharge"))
+    local ccc = 0
+    self.ComputerCar = false
+    for k,v in ipairs(self.WagonList) do
+        if v.AR63 and v.ComputerCar then ccc = ccc + 1; break end
+    end
+    if ccc == 0 then self.ComputerCar = true end
     math.randomseed(num+817171)
     if self.CustomSettings then
     --{"Type","Spawner.717.Type","List",{"Spawner.717.Type.717","Spawner.717.Type.7175"}},
@@ -677,24 +688,9 @@ function ENT:Think()
     self:SetPackedRatio("EnginesCurrent", 0.5 + 0.5*(self.Electric.I24/500.0))
 
 ----------------------------------*****************************--------------------------------
-    --10th wire voltage readout imitation depending on the BPSNs and EKK state, not on the wagon battery switch state
-    -- PC — power converter; CC — control circuits
-    local hvcounter = 0
-    local hvcar = nil
-    local vdrop = 1.125*(#self.WagonList)
-    for k,v in ipairs(self.WagonList) do
-	if v.PowerSupply.X2_2 > 0 and v.A24.Value > 0 then
-            hvcounter = hvcounter + 1
-            hvcar = hvcar or v
-            vdrop = vdrop - 1.125
-        else
-            vdrop = vdrop - ((v.A56.Value == 0 and 0.4 or (v.VB.Value == 0 and 0.4 or 0)) + (v.LK4.Value == 0 and 0.725 or 0))
-        end
-    end
-    local PCV_o = hvcounter > 0 and math.Clamp(76+(hvcar.Electric.Aux750V - 600)*8/375, 76, 84) - vdrop or self.WagonList[1].Battery.Voltage
     --imitating converter overload protection only when control circuits are energized and at least one PC on the train is off; pretty useless btw (but fun)
-    local pcloadratio = #self.WagonList/(hvcounter > 0 and hvcounter or 0.5)
-    local _A = 25*(6 - 6/(5.01))                                            --assuming one PC on 6 cars can work for 25 secs while the cars' CCs are energized
+    local pcloadratio = #self.WagonList/(self.Battery.hvcounter > 0 and self.Battery.hvcounter or 0.5)
+    local _A = 90*(6 - 6/(5.01))                                            --assuming one PC on 6 cars can work for 90 secs while the cars' CCs are energized
     if pcloadratio > 1 and pcloadratio <= #self.WagonList and self.LK4.Value > 0 and self.PowerSupply.X2_2 > 0 and not self.pcrlxtimer then
         self.pcprotimer = self.pcprotimer or CurTime()
         --hyperbolic function of PC operating time depending on load coeff
@@ -715,7 +711,7 @@ function ENT:Think()
     self.PowerSupply:TriggerInput("3x2",self.pcrlxtimer and 1 or 0)     --BPSN overheat protection in case of RZP button is being pressed constantly
 ----------------------------------*****************************--------------------------------
 
-    self:SetPackedRatio("BatteryVoltage",Panel["V1"]*PCV_o/150.0)
+    self:SetPackedRatio("BatteryVoltage",(self.eds_eq)/150.0)
     
     self:SetPackedBool("Compressor",Pneumatic.Compressor > 0)
     self:SetPackedBool("Buzzer",Panel.Ring >= 1)
diff --git a/lua/entities/gmod_subway_81-717_mvm_custom.lua b/lua/entities/gmod_subway_81-717_mvm_custom.lua
index 843d2be..baabb0d 100644
--- a/lua/entities/gmod_subway_81-717_mvm_custom.lua
+++ b/lua/entities/gmod_subway_81-717_mvm_custom.lua
@@ -114,4 +114,5 @@ ENT.Spawner = {
         ent.Pneumatic.BrakeLinePressure = val == 4 and 5.2 or val == 1 and 2.3 or math.min(ent.Pneumatic.TrainLinePressure+0.25,math.random()*4)
         ent.Pneumatic.WorkingChamberPressure = val==3 and math.random()*1.0 or val==2 and 4.0+math.random()*1.0 or 5.2
     end},
+    {"BattCharge","Spawner.717.Chargeable","Boolean"}
 }
diff --git a/lua/metrostroi/systems/sys_81_714_electric.lua b/lua/metrostroi/systems/sys_81_714_electric.lua
index 841c4b9..615cc9f 100644
--- a/lua/metrostroi/systems/sys_81_714_electric.lua
+++ b/lua/metrostroi/systems/sys_81_714_electric.lua
@@ -58,8 +58,9 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     local P     = Train.PositionSwitch
     local RheostatController = Train.RheostatController
     local RK    = RheostatController.SelectedPosition
-    local B     = (Train.Battery.Voltage > 55) and 1 or 0
-    local BO    = B*Train.VB.Value
+    local B     = (Train.Battery.Voltage >= 60) and 1 or (Train.Battery.Voltage >= Train.Battery.CutoffVoltage) and 0.5 or 0
+    local BO    = B*Train.VB.Value*(1-Train.PA1.Value)
+    local BO2   = B*Train.VB.Value*(1-Train.PA2.Value)
     local T     = Train.SolverTemporaryVariables
 
     local isMVM = self.Type == 1
@@ -80,7 +81,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     end
     --Вагонная часть
     S["10A"] = BO*Train.A30.Value
-    S["ZR"] = (1-Train.RRP.Value)+(B*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
+    S["ZR"] = (1-Train.RRP.Value)+(B*(1-Train.PA2.Value)*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
 
     S["1A"] = T[1]*Train.A1.Value*Train.IGLA_PCBK.KVC
     S["6A"] = T[6]*Train.A6.Value
@@ -229,7 +230,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     Train:WriteTrainWire(22,T[10]*Train.A10.Value*Train.AK.Value)
     S["UO"] = T[10]*Train.A27.Value
     Train:WriteTrainWire(27,S["UO"]*Train.L_1.Value)
-    S["36N"] = BO*Train.A45.Value
+    S["36N"] = BO2*Train.A45.Value
     Train:WriteTrainWire(36,S["36N"]*Train.BPSNon.Value)
     Train:WriteTrainWire(37,S["36N"]*Train.ConverterProtection.Value)
 
@@ -252,7 +253,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     S["B9a"] = S["B9"]*Train.VB.Value
     Train.KVC:TriggerInput("Set",S["B9a"])
     --Train.KUP:TriggerInput("Set",S["B9a"]*Train.A75.Value)
-    S["D4"] = BO*Train.A13.Value
+    S["D4"] = BO2*Train.A13.Value
     Panel.RZP = T[36]*T[61]
     --[[S["14b"] = S["14a"]*Train.A17.Value
     S["D1"] = ["10"]*Train.A21.Value*KV["D-D1"]+S["14b"]*KRU["11/3-D1/1"]
@@ -340,13 +341,13 @@ function TRAIN_SYSTEM:SolveRKInternalCircuits(Train,dT,firstIter)
     local P     = Train.PositionSwitch
     local RheostatController = Train.RheostatController
     local RK    = RheostatController.SelectedPosition
-    local B     = (Train.Battery.Voltage > 55) and 1 or 0
-    local BO    = B*Train.VB.Value
+    local B     = (Train.Battery.Voltage >= 60) and 1 or (Train.Battery.Voltage >= Train.Battery.CutoffVoltage) and 0.5 or 0
+    local BO    = B*Train.VB.Value*(1-Train.PA1.Value)
     local T     = Train.SolverTemporaryVariables
 
     --Вагонная часть
     S["10A"] = BO*Train.A30.Value
-    S["ZR"] = (1-Train.RRP.Value)+(B*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
+    S["ZR"] = (1-Train.RRP.Value)+(B*(1-Train.PA2.Value)*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
 
 
     S["1N"] = C(11<=RK and RK<=18)*(1-Train.LK4.Value)
diff --git a/lua/metrostroi/systems/sys_81_717_electric.lua b/lua/metrostroi/systems/sys_81_717_electric.lua
index 0ad76c4..0c8f1b4 100644
--- a/lua/metrostroi/systems/sys_81_717_electric.lua
+++ b/lua/metrostroi/systems/sys_81_717_electric.lua
@@ -56,8 +56,9 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     local P     = Train.PositionSwitch
     local RheostatController = Train.RheostatController
     local RK    = RheostatController.SelectedPosition
-    local B     = (Train.Battery.Voltage > 55) and 1 or 0
-    local BO    = B*Train.VB.Value
+    local B     = (Train.Battery.Voltage >= 60) and 1 or (Train.Battery.Voltage >= Train.Battery.CutoffVoltage) and 0.5 or 0
+    local BO    = B*Train.VB.Value*(1-Train.PA1.Value)
+    local BO2   = B*Train.VB.Value*(1-Train.PA2.Value)
     local T     = Train.SolverTemporaryVariables
     local elType = self.Type
     local isMVM = elType == 1
@@ -77,11 +78,12 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
 
     S["10AK"] = T[10]*Train.A54.Value*Train.A84.Value
     S["U2"] = S["10AK"]*KV["U2-10AK"] --10AK-KV-U2
+    --print(Train.Battery.CutoffVoltage)
 
     --Reverser
     S["7D"] = T[10]*Train.A48.Value
     S["7G"] = S["7D"]*KV["10-7G"] --10-A48-RV-7G --FIXME 34w ARS
-    S["B3"] = B*Train.A44.Value
+    S["B3"] = B*(1-Train.PA2.Value)*Train.A44.Value
     S["14a"] = S["B3"]*KRU["14/1-B3"]
     S["14b"] = S["14a"]*Train.A17.Value
     S["F"] = T[10]*Train.A29.Value
@@ -475,7 +477,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
 
     --Вагонная часть
     S["10A"] = BO*Train.A30.Value
-    S["ZR"] = (1-Train.RRP.Value)+(B*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
+    S["ZR"] = (1-Train.RRP.Value)+(B*(1-Train.PA2.Value)*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
 
     if isMVM then
         S["1A"] = T[1]*Train.A1.Value*Train.IGLA_PCBK.KVC
@@ -703,7 +705,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     Panel.TW18 = S["18A"]
     Panel.GreenRP = S["10AN"]*S["UO"]
 
-    S["36N"] = BO*Train.A45.Value
+    S["36N"] = BO2*Train.A45.Value
     Train:WriteTrainWire(37,Train.ConverterProtection.Value)
     Train:WriteTrainWire(69,S["36N"]*Train.BPSNon.Value)
     Train:WriteTrainWire(36,T[69]*(1-Train.BPSNon.Value))
@@ -715,7 +717,7 @@ function TRAIN_SYSTEM:SolveAllInternalCircuits(Train,dT,firstIter)
     Train.KUP:TriggerInput("Set",S["B9a"]*Train.A75.Value)
     Panel.KUP = S["B9a"]*Train.KUP.Value
 
-    S["D4"] = BO*Train.A13.Value
+    S["D4"] = BO2*Train.A13.Value
     if isLVZ then
         if isKSD then
             S["D1"] = T[10]*Train.A21.Value*KV["D-D1"]+S["14b"]*KRU["11/3-D1/1"]+T[16]*Train.VUD1.Value
@@ -881,13 +883,13 @@ function TRAIN_SYSTEM:SolveRKInternalCircuits(Train,dT,firstIter)
     local P     = Train.PositionSwitch
     local RheostatController = Train.RheostatController
     local RK    = RheostatController.SelectedPosition
-    local B     = (Train.Battery.Voltage > 55) and 1 or 0
-    local BO    = B*Train.VB.Value
+    local B     = (Train.Battery.Voltage >= 60) and 1 or (Train.Battery.Voltage >= Train.Battery.CutoffVoltage) and 0.5 or 0
+    local BO    = B*Train.VB.Value*(1-Train.PA1.Value)
     local T     = Train.SolverTemporaryVariables
 
     --Вагонная часть
     S["10A"] = BO*Train.A30.Value
-    S["ZR"] = (1-Train.RRP.Value)+(B*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
+    S["ZR"] = (1-Train.RRP.Value)+(B*(1-Train.PA2.Value)*Train.A39.Value*(1-Train.RPvozvrat.Value)*Train.RRP.Value)*-1
 
 
     S["1N"] = C(11<=RK and RK<=18)*(1-Train.LK4.Value)
diff --git a/lua/metrostroi/systems/sys_battery.lua b/lua/metrostroi/systems/sys_battery.lua
index 841e36c..7b5ec1b 100644
--- a/lua/metrostroi/systems/sys_battery.lua
+++ b/lua/metrostroi/systems/sys_battery.lua
@@ -1,10 +1,11 @@
 --------------------------------------------------------------------------------
--- Battery
+-- Battery (HKH-80 type NiCd battery)
 --------------------------------------------------------------------------------
 -- Copyright (C) 2013-2018 Metrostroi Team & FoxWorks Aerospace s.r.o.
 -- Contains proprietary code. See license.txt for additional information.
 --------------------------------------------------------------------------------
 Metrostroi.DefineSystem("Battery")
+TRAIN_SYSTEM.DontAccelerateSimulation = true
 
 function TRAIN_SYSTEM:Initialize()
     -- Предохранители цепей (ПА1, ПА2)
@@ -12,35 +13,98 @@ function TRAIN_SYSTEM:Initialize()
     self.Train:LoadSystem("PA2","Relay","PP-28", { trigger_level = 31.5 }) -- A
 
     -- Battery parameters
-    self.ElementCapacity    = 80 -- A*hour
-    self.ElementCount       = 56 -- 52 on 81-717
-    self.Capacity = self.ElementCapacity * self.ElementCount * 3600
+    self.ElementCapacity    = 80                                -- A*hour
+    self.Capacity = self.ElementCapacity * 3600
     self.Charge = self.Capacity
-    self.Voltage = 65
     -- Current through battery in amperes
     self.Current = 0
     self.Charging = 0
+    self.ElementCount                   = 52
+    self.StartVoltage                   = 75                    -- 1.44 volt per fully charged new NiCd-cell
+    self.Voltage = self.StartVoltage
+    self.IResistance                    = 0.018*52              -- 0.018 Ohm is a standard internal resistance of a fully-charged and rested new 80 Ah NiCd-cell
+    self.SoC0v                          = 52                    -- 52 volts at 0% state of charge assuming 1.0 volt per fully discharged cell
+    self.SoC                            = 100                   -- fully charged
+    self.CutoffVoltage                  = 54.7                  -- 52 Volts actually, but due to lack of CC's current simulation train devices won't ever be shut down with this value
+    self.Ibatt                          = 0
+    self.eds_eq                         = 0
+    self.hvcounter                      = 0
+    self.Dischar = false
+    self.ComputerCar = false
 end
 
 function TRAIN_SYSTEM:Inputs()
-    return { "Charge" }
+    return { "Charge", "Dischargeable", "InitialVoltage", "CarType" }
 end
 function TRAIN_SYSTEM:Outputs()
     return { "Capacity", "Charge", "Voltage" }
 end
 function TRAIN_SYSTEM:TriggerInput(name,value)
     if name == "Charge" then self.Charging = value end
+    if name == "Dischargeable" then self.Dischar = value end
+    if name == "InitialVoltage" then self.StartVoltage = value end
+    if name == "CarType" then self.CarType = value end
 end
 function TRAIN_SYSTEM:Think(dT)
-    -- Calculate discharge
-    self.Current = 0--self.Train.KVC.Value*90*(self.Train.PowerSupply.XT3_1 > 0 and 3 or -1 + 4*self.Train:ReadTrainWire(27))*50*self.Train.Panel["V1"]
-    --print(self.Train.Panel["V1"])
-    self.Charge = math.min(self.Capacity,self.Charge + self.Current * dT)
-
-    -- Calculate battery voltage
-    if self.Train.PowerSupply then
-        self.Voltage = 65*(self.Charge/self.Capacity) + ((self.Train.PowerSupply.XT3_1 or self.Charging) > 0 and 17 or 0)
+    if self.CarType == 1 then
+        self.SoC = 100 * (self.Voltage - self.SoC0v)/(75 - self.SoC0v)
+        if self.SoC > 60 then
+            self.IResistance = 1e-4 * self.SoC + 0.012
+        elseif 20 <= self.SoC and self.SoC <= 60 then
+            self.IResistance = 0.018
+        elseif self.SoC < 20 then
+            self.IResistance = math.min(1.1, 0.018 + 1.56^(12-1.48*self.SoC))       -- just made it up by myself >_>
+        end
+        self.IResistance = self.IResistance * self.ElementCount
+        
+        if self.Train.ComputerCar then
+            local nodecurr_sum, branchcond_sum = 0, 0
+            local eds_eq = 0
+            local hvcounter = 0
+            for k,v in ipairs(self.Train.WagonList) do
+                if v.PowerSupply.X2_2 > 0 and v.A24.Value > 0 then
+                    hvcounter = hvcounter + 1
+                end
+            end
+            --a "two-node method" of 10's wire voltage computing
+            for k,v in ipairs(self.Train.WagonList) do
+                nodecurr_sum = nodecurr_sum + v.A56.Value*(v.VB.Value*v.Battery.Voltage/v.Battery.IResistance + v.PowerSupply.X2_1*v.A24.Value*v.PowerSupply.VoltageOut/v.PowerSupply.IResistance)
+                --+ 1/((1 - v.VB.Value*v.A49.Value)*1e12 + 1e3)
+                branchcond_sum = branchcond_sum + 1/(v.LK4.Value > 0 and 20 or 1e12) + 1/(v.RV1.Value > 0 and 10 or 1e12) + 1/(v.KK.Value > 0 and 24 or 1e12) + 1/(1e3) + v.A56.Value*(v.VB.Value/v.Battery.IResistance + v.PowerSupply.X2_1*v.A24.Value/v.PowerSupply.IResistance)
+            end
+            eds_eq = nodecurr_sum/branchcond_sum
+            for k,v in ipairs(self.Train.WagonList) do
+                v.PowerSupply.car_control_load = eds_eq*(1/(v.LK4.Value > 0 and 20 or 1e12) + 1/(v.RV1.Value > 0 and 10 or 1e12) + 1/(v.KK.Value > 0 and 24 or 1e12))
+                v.Battery.Ibatt = math.min(60,(math.min(1,(v.VB.Value*v.A56.Value+v.A24.Value))*v.VB.Value*((v.A56.Value*(eds_eq - v.Battery.Voltage) + v.PowerSupply.X2_1*(1-v.A56.Value)*(v.PowerSupply.VoltageOut*v.A24.Value - v.Battery.Voltage))))/v.Battery.IResistance) -- math.max(0,(2.4*(v.Battery.Voltage/v.Battery.StartVoltage)-2.39))
+                v.Battery.eds_eq = eds_eq
+                v.Battery.hvcounter = hvcounter
+                v.eds_eq = v.Battery.eds_eq
+                --print(v.PowerSupply.car_control_load,v.Battery.Ibatt,v.Battery.IResistance)
+            end
+        end
+        -- Calculate discharge
+        if self.Dischar then
+            self.Train.BattCurrent = self.Ibatt*self.Train.A24.Value
+            self.Train.PA1:TriggerInput("Close",self.Ibatt)
+            self.Train.PA2:TriggerInput("Close",self.Ibatt)
+            self.Charge = math.min(self.Capacity,self.Charge + self.Ibatt * (self.Ibatt < 0 and 1000/self.SoC0v or 500/self.SoC0v)* dT)--1.33*Capacity
+        end
+        -- Calculate battery voltage
+        local batt_calc_voltage = math.max(self.StartVoltage,self.eds_eq*self.Train.VB.Value*self.Train.A56.Value,self.Train.PowerSupply.VoltageOut*self.Train.VB.Value*self.Train.A24.Value*self.Train.PowerSupply.X2_1)
+        self.Voltage = batt_calc_voltage*(self.Charge/self.Capacity)
+        --self.Voltage = self.StartVoltage*(self.Charge/self.Capacity)
     else
-        self.Voltage = 65*(self.Charge/self.Capacity) + (self.Charging > 0 and 17 or 0)
+        -- Calculate discharge
+        self.Current = 0--self.Train.KVC.Value*90*(self.Train.PowerSupply.XT3_1 > 0 and 3 or -1 + 4*self.Train:ReadTrainWire(27))*50*self.Train.Panel["V1"]
+        --print(self.Train.Panel["V1"])
+        self.Charge = math.min(self.Capacity,self.Charge + self.Current * dT)
+
+        -- Calculate battery voltage
+        if self.Train.PowerSupply then
+            self.Voltage = 65*(self.Charge/self.Capacity) + ((self.Train.PowerSupply.XT3_1 or self.Charging) > 0 and 17 or 0)
+        else
+            self.Voltage = 65*(self.Charge/self.Capacity) + (self.Charging > 0 and 17 or 0)
+        end
     end
+    --print(self.eds_eq)
 end
\ No newline at end of file
diff --git a/lua/metrostroi/systems/sys_bpsn.lua b/lua/metrostroi/systems/sys_bpsn.lua
index 4e1ec41..1d399bc 100644
--- a/lua/metrostroi/systems/sys_bpsn.lua
+++ b/lua/metrostroi/systems/sys_bpsn.lua
@@ -5,6 +5,7 @@
 -- Contains proprietary code. See license.txt for additional information.
 --------------------------------------------------------------------------------
 Metrostroi.DefineSystem("BPSN")
+TRAIN_SYSTEM.DontAccelerateSimulation = true
 
 function TRAIN_SYSTEM:Initialize()
     self.X2 = {
@@ -19,6 +20,11 @@ function TRAIN_SYSTEM:Initialize()
     self.X6_2 = 0
     self.X2_1 = 0
 
+    self.OutputVoltage = math.random(78,82) -- volts
+    self.IResistance = 0.05--1.33 --Ohm
+    self.car_control_load= 0 --Amp
+    self.VoltageOut = 0
+
     self.Active = 0
     self.Train:LoadSystem("ConverterProtection","Relay","Switch", {bass = true})
 end
@@ -54,4 +60,6 @@ function TRAIN_SYSTEM:Think()
     self.Active = XT3_1>0 and 1 or 0
     self.X2_2 = Train.Electric.Aux750V*self.Active
     self.X6_2 = self.Active
+    
+    self.VoltageOut = self.X2_1*((self.OutputVoltage - self.car_control_load*self.IResistance) + (Train.Electric.Aux750V - 600)*2/375)
 end
\ No newline at end of file
diff --git a/lua/metrostroi/systems/sys_relay.lua b/lua/metrostroi/systems/sys_relay.lua
index 62d1f95..eb1a542 100644
--- a/lua/metrostroi/systems/sys_relay.lua
+++ b/lua/metrostroi/systems/sys_relay.lua
@@ -75,7 +75,7 @@ function TRAIN_SYSTEM:Initialize(parameters,extra_parameters)
     -- Should relay be spring-returned to initial position
     parameters.returns          = parameters.returns or (not parameters.latched)
     -- Trigger level for the relay
-    parameters.trigger_level    = parameters.trigger_level or 0.5
+    parameters.trigger_level    = parameters.trigger_level or 0.2*math.random() + 0.4
     for k,v in pairs(parameters) do
         self[k] = v
     end
diff --git a/lua/metrostroi_data/languages/en_717.lua b/lua/metrostroi_data/languages/en_717.lua
index 84abcc7..43fc2cc 100644
--- a/lua/metrostroi_data/languages/en_717.lua
+++ b/lua/metrostroi_data/languages/en_717.lua
@@ -1207,6 +1207,7 @@ Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.1      = @[Common.Spawn
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.2      = @[Common.Spawner.SpawnMode.Deadlock]
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.3      = @[Common.Spawner.SpawnMode.NightDeadlock]
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.4      = @[Common.Spawner.SpawnMode.Depot]
+Entities.gmod_subway_81-717_mvm_custom.Spawner.BattCharge.Name  = @[Common.Spawner.Chargeable]
 
 #Spawner:
 Entities.gmod_subway_81-717_lvz.Spawner.Texture.Name        = @[Common.Spawner.Texture]
diff --git a/lua/metrostroi_data/languages/en_base.lua b/lua/metrostroi_data/languages/en_base.lua
index 9e7d144..fd0d10f 100644
--- a/lua/metrostroi_data/languages/en_base.lua
+++ b/lua/metrostroi_data/languages/en_base.lua
@@ -227,6 +227,7 @@ Common.Spawner.Old                      = Old
 Common.Spawner.New                      = New
 Common.Spawner.Type                     = Type
 Common.Spawner.SchemeInvert             = Invert line schemes
+Common.Spawner.Chargeable               = Train battery can lose it's charge
 
 #Coupler common
 Common.Couple.Title         = Coupler menu
diff --git a/lua/metrostroi_data/languages/ru_717.lua b/lua/metrostroi_data/languages/ru_717.lua
index bca8c52..b2b758b 100644
--- a/lua/metrostroi_data/languages/ru_717.lua
+++ b/lua/metrostroi_data/languages/ru_717.lua
@@ -1207,6 +1207,7 @@ Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.1      = @[Common.Spawn
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.2      = @[Common.Spawner.SpawnMode.Deadlock]
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.3      = @[Common.Spawner.SpawnMode.NightDeadlock]
 Entities.gmod_subway_81-717_mvm_custom.Spawner.SpawnMode.4      = @[Common.Spawner.SpawnMode.Depot]
+Entities.gmod_subway_81-717_mvm_custom.Spawner.BattCharge.Name  = @[Common.Spawner.Chargeable]
 
 #Spawner:
 Entities.gmod_subway_81-717_lvz.Spawner.Texture.Name        = @[Common.Spawner.Texture]
diff --git a/lua/metrostroi_data/languages/ru_base.lua b/lua/metrostroi_data/languages/ru_base.lua
index 05d0c07..a9f5724 100644
--- a/lua/metrostroi_data/languages/ru_base.lua
+++ b/lua/metrostroi_data/languages/ru_base.lua
@@ -227,6 +227,7 @@ Common.Spawner.Old                      = Старые
 Common.Spawner.New                      = Новые
 Common.Spawner.Type                     = Тип
 Common.Spawner.SchemeInvert             = Инвертировать наддверные схемы
+Common.Spawner.Chargeable               = Разряжаемые аккумуляторы
 
 #Coupler common
 Common.Couple.Title         = Меню сцепки