Beijing Epsolar Technology Co., Ltd. | Solar Components | ChinaEPEVER MPPT Solar Charge Controller User Manual
EPEVER MPPT Solar Charge Controller

EPEVER MPPT Solar Charge Controller User Manual

Thank you for selecting the Tracer BP series MPPT solar charge controller. Please read this manual carefully before using the product and pay attention to the safety information.

Safety Information

  • Read all of the instructions in the manual before installation.
  • DONOT disassemble or attempt to repair the controller.
  • Install external fuse or breaker as required.
  • Do disconnect the solar module and fuse/ breakers near to battery before installing or moving the controller.
  • Power connections must remain tight to avoid excessive heating from a loose connection.
  • Only charge batteries that comply with the parameters of controller.
  • Battery connection may be wired to one battery or a bank of batteries.
  • Risk of electric shock, the PV and load can produce high voltages when the controller is working.


The Tracer BP series solar charge controller adopt to the advanced Maximum Power Point Tracking charging methods, it enables the system charging and discharging management to obtain the most radical optimization. Increase the system flexibility, yet lower down the system cost. The controller support a variety of battery, for example sealed, gel, flooded and lithium battery. User can view and modify the working status  parameters. It can be widely used on solar home system, traffic signal, solar street light, solar garden lamp, etc. The features are listed below

  • Adopt high quality components of ST,IR and Infineon, make sure product using lifespan
  • Wide working environment temperature
  • Apply to lead-acid battery and lithium battery
  • Lithium battery self-activating and low temperature protection function
  • Maximum conversion efficiency of 98%
  • Advanced Maximum Power Point Tracking (MPPT) technology, with tracking efficiency no less than 99%
  • Ultra-fast tracking speed and guaranteed tracking efficiency
  • Accurately recognizing and tracking of multiple power points
  • PV power limitation function
  • Monitoring and setting parameter via Mobile APP, PC Monitor setting software with RS485 communication interface.
  • Use of standard Modbus communication protocol for RS485 bus connections, communication protocol compatibility much better
  • Connecting the IOT(Internet of Things) module and Cloud Server monitoring software to realize remote monitoring of the multi-machine system
  • The RS485 connector can provide power supply
  • Aluminum housing for better cooling
  • Real-time energy statistics function
  • IP68 waterproof degree

Product Features

Product Features

Temperature Sensor

Charging Status LED indicator

PV Positive and Negative Wires

Battery Status LED indicator

Battery Positive and Negative Wires

RS485 waterproof port

Load Positive and Negative Wires

Waterproof cap(Included)

  1. The temperature sensor short-circuited or damaged, the controller will be charging or discharging at the default temperature 25 ºC.
  2. The port can provide the DC power supply of 5VDC/150mA and have the short circuit function

Caution Icon NOTE: When the RS485 communication port is not working, the
waterproof cap must be installed to prevent water getting in


Wiring Instruction

Connection Order

  1. Connect components to the charge controller in the sequence as shown above and pay much attention to the “+” and “-”.Please don’t insert the fuse or turn on the breaker during the installation. When disconnecting the system, the order will be reserved.
  2. After power on the controller, check the battery LED indicator on the controller, it will be green. If it’s not green, please refer to chapter 10.
  3.  Connect a fuse in series through battery positive (+) in the circuit and the battery circuit fuse must be 1.25 to 2 times to the rated current. The installed distance is within 150mm.

Load self-test function

The load is ON when the controller power on 10s. After 10s it will restore to set working mode.

LED Indicators





LED Indicators




On Solid

PV connection normal but low voltage(irradiance) from PV, no charging



No PV voltage(night time) or PV connection problem


Slowly Flashing(1Hz)

In charging


Fast Flashing(4Hz)

PV Over voltage

 LED Indicators


Green On Solid Normal


Slowly Flashing(1Hz)



Fast Flashing(4Hz) Over voltage


On Solid

Under voltage

Red On Solid

Over discharged


 Fast Flashing(4Hz)

Battery Overheating Low temperature

Charging(green) and battery indicator(orange)flashing simultaneously

System voltage error※

  • When the battery type is Lithium Battery the controller do not recognize the system voltage automatically.

Load Working Mode

  1.  Manual Mode(Default ON)
  2. Light ON/OFF
    Working Mode
  3. LightON+Timer
    Light ON
  4. Real-time Control

Control the load ON/OFF time through setting real-time clock.

Caution Icon NOTE: In the mode of Light ON/OFF and Light ON/Timer, the Load is turned on after 10Min. delay

Accessories(optional) and Software

PC Software Solar Station Monitor

APP Software

  • Android phone Charge Controller(Li)
  • IPhone
    APP Store——EPEVER——EP-01
  • MT50 does not support the relevant parameters of lithium battery.
  • Specific instructions refer to the list of accessories and software.
    Software Instruction


  • PV Over Current
    The controller will limit battery charging current to the Maximum Battery Current rating. Therefore an over-sized solar array will not operate at peak power.
  • PV Short Circuit
    When PV short circuit is powered on or PV input is short circuit on low-power, the controller will stop charging. Clear it to resume normal operation.
    Electric Warning Icon WARNING: The controller may be damaged, when PV input is short
    circuit on high-power.
  • PV Reverse Polarit
    The PV can be reversely connected with a controller when:
  • Only the PV is connected with the controller;
  • The battery is positively connected, and the open-circuit voltage of the PV is lower than 85V(This requirement is only for Tracer26/39/5210BP).
    Electric Warning Icon WARNING: Controller will be damaged when the PV array straight
    polarity and the actual operation power of the PV array is 1.5 times greater than the rated charge power!
  • Battery Reverse Polarity
    When the PV is not connecting or connecting reversed, fully protection against battery reverse polarity, correct the wire connection to resume normal operation.
    Electric Warning Icon WARNING: Controller will be damaged when the PV connection is
    correct and battery connection reversed!
  • Battery Over Voltage
    When the battery voltage reaches to the set point of Over Voltage Disconnect Voltage, the controller will stop charging the battery to protect the battery from being over charged to break down
  • Battery Over Discharge
    When the battery voltage reaches to the set point of Low Voltage Disconnect Voltage, the controller will stop discharging the battery to protect the battery from being over discharged to break down
  • Battery Overheating
    The controller detects the environment temperature through the external temperature sensor. If the environment temperature exceeds 65 ºC, the controller will automatically start the overheating protection to stop working, and recover below 55 ºC.
  • Lithium battery Low Temperature
    The temperature sensor is less than the low temperature value, Lithium battery stop charging/discharging. It is higher than the low temperature value, Lithium battery start charging/discharging.
  • Load Overload
    If the load current exceeds the maximum load current rating 1.05 times, the controller will disconnect the load. Overloading must be cleared up through reducing the load and restarting controller
  • Load Short Circuit
    Load will be switched off when load short circuit (≥4 times rated current) happens. Controller will automatically attempt to reconnect load for 5 times. If short circuit protection still exist after controller’s 5 times attempts, user have to clear short circuit ,then restart the controller or wait for one night-day cycle (night time>3 hours)
  • Temperature sensor break down
    If the temperature sensor short-circuited or damaged, the controller will be charging  or discharging at the default temperature 25 ºC to prevent the battery damaged from overcharging or over discharged.
  • High Voltage Transients
    The controller is protected against small high voltage transients. In lightning prone areas, additional external suppression is recommended.



Possible reasons


LED Charging indicator turn off during daytime when sunshine falls on PV modules properly

 PV array disconnection

Confirm that PV and battery wire connections are correct and tight



No LED indicator

Battery voltage maybe less than 8.5V

Measure battery voltage with the multi-meter. Min.8.5V can start up the controller

Battery LED indicator green fast Flashing

 Battery over voltage

Check if battery voltage is higher than OVD, and disconnect the PV

 Battery LED indicator red

Battery over discharged

When the battery voltage is restored to or above LVR point (low voltage reconnect voltage), the load will recover

Battery LED indicator red flashing

 Battery Overheating

The controller will automatically turn the system off. But while the temperature decline to be below 50ºC, the controller will resume.



Load is not output

Load Overload

①Please reduce the number of electric equipments. ②Restart the controller. ③wait for one night-day cycle (night time>3 hours).

 Load Short Circuit

①Check carefully loads connection, clear the fault. ②Restart the controller. ③wait for one night-day cycle (night time>3 hours).

①When it is overload or short circuit, the load have 5 times auto-recovery  output function, which each times delay respectively 5s, 10s, 15s, 20s, 25s.


This warranty does not apply under the following conditions:

  • Damage from improper use or use in an unsuitable environment.
  • PV or load current, voltage or power exceeding the rated value of controller.
  •  The controller is working temperature exceed the limit working environment temperature.
  •  User disassembly or attempted repair the controller without permission.
  •  The controller is damaged due to natural elements such as lighting.
  •  The controller is damaged during transportation and shipment.

Technical Specifications

Item           Model

Tracer2606BP Tracer3906BP Tracer5206BP Tracer2610BP Tracer3910BP Tracer5210BP Tracer7810BP

Nominal system voltage

12/24VDC Auto( Lithium battery do not automatic identification system voltage)
Battery input voltage range


Rated charge/discharge current

10A 15A 20A 10A 15A 20A


Rated charge power

130W/12V;260W/24V 200W/12V;400W/24V 260W/12V;520W/24V 130W/12V;260W/24V 200W/12V;400W/24V 260W/12V;520W/24V


Max. PV open circuit voltage

60V( at minimum operating environment temperature )


46V( at 25℃ environment temperature )

100V( at minimum operating environment temperature )

92V( at 25℃ environment temperature )

MPP Voltage range

( Battery voltage+2V)~36V

( Battery voltage+2V)~72V

Battery Type

Lead-acid battery: Sealed(Default) / Gel / Flooded/User; Lithium battery:LiFePO4/ Li-NiCoMn/User


Equalize Charging Voltage

Sealed :14.6V/Gel:No / Flooded:14.8V/User:9-17V (×2/24V)

Boost Charging Voltage

Sealed :14.4V/Gel:14.2V/Flooded:14.6V/User:9-17V (×2/24V)

Float Charging Voltage

Sealed/Gel/Flooded:13.8V/User:9-17V (×2/24V)

Low Voltage Reconnect Voltage

Sealed/Gel/Flooded:12.6V/User:9-17V (×2/24V)

Low Voltage Disconnect Voltage

Sealed/Gel/Flooded:11.1V/User:9-17V (×2/24V)


Boost Charging Voltage

LiFePO4:14.5V/ Li-NiCoMn:12.5V / User:9-17V (×2/24V)

Low Voltage Reconnect Voltage

LiFePO4:12.8V / Li-NiCoMn:10.5V / User:9-17V (×2/24V)

Low Voltage Disconnect Voltage

LiFePO4:11.1V / Li-NiCoMn:9.3V / User:9-17V (×2/24V)



Temperature compensation coefficient

-3mV/℃/2V( Lithium battery don’t have temperature compensation coefficient)



Working environment Tem.





Overall dimension

124×89×30mm 150×93.5×32.7mm 153×105×52.1mm 124×89×30mm 150×93.5×32.7mm 153×105×52.1mm


Mounting hole size


Mounting dimension

88×76mm 120×83mm 120×94mm 88×76mm 120×83mm


Power cable

14AWG(2.5mm2) 12AWG(4mm2) 14AWG(2.5mm2) 12AWG(4mm2)


Net weight

0.54kg 0.74kg 1.20kg 0.54kg 0.74kg 1.20kg



Would the unit be damaged if the battery polarity is reversed?

It is required to connect the battery first, if the battery polarity is reversed in this step, the controller has the protection and would not be damaged. But if the user connects the PV first and then, unfortunately, connects the battery polarity reversed, the controller would be damaged. This is caused by lithium battery characteristics.

Can the lithium battery type be chosen via the LCD and button on the controller?

Yes, the TracerAN series 10-40A charge controller (softwareSV200 or above version ) supports choosing lithium battery type via LCD. But WiFi/Bluetooth module or PC is required if the user wants to customize the voltage setpoints.

Can I set Max. charge current?

No such feature, the only way to limit the Max. charge current is to connect fewer solar panels.

Is this a three stage charger?

An essential setting that is often not available…

What is the operating high temp?

The manual gives an operational ambient temperature range of -25C to 45C, and a storage temperature range of -35C to 80C; the manual also says that if you’re operating outside the permissible ambient range, you need to derate the capacity in service (also, below -20C the LCD panel won’t display).

Can the 4210 model be paired in parallel with the same controller to increase capacity, like the 6415 can (6415 can be connected in up to a set of 8)?

Yes, it can. You can connect two or four 4210AN charge controller to the batteries bank in parallel, but do not share PV Panels. Dedicate a number of PV panels to each controller (Any mppt controller must have a separate array of solar panels).

Does this charge controller cause any amateur radio RFI or noise problems?

Yes to measurable rfi . No to it being a problem. N3SBX. If it were to become a problem just turn it off for weak signal work or build a filter

Why is 99% answers to how many 100w could be on 40a mppt wrong? why manufacturer says depends on actual amps from panels?

It depends on if you are charging 12 volt batteries or a 24 volt battery bank

Are these stackable?

You can connect two or four same Tracer AN charge controller modle to the batteries bank in parallel, but do not share PV Panels. Dedicate a number of PV panels to each controller.

Can you mount this controller so it lies on its side (horizontally on its long-thin side?)

As long it has airflow thru the fins , it should be fine . That is just my guess. 

Can this be used for Si02 batteries?

It may be possible. You will definitely have to contact EPEVER directly though. The specifications
for this line of controllers calls out Flooded, Gel, AGM, Li (FePo4), and user.

Is this temank or epever? Description has name as temank. Everything else syates epever.

This is an Epever

Do you need wi fi for this charge controller?

No. All functions are controlled by the remote display.

Can you insert a 4 gauge wire into the PV contacts? 

some of the connectors yes but not all

40A says 6awg for power terminals. I have 10 awg coming from solar panels, so do I connect the 10awg to 6awg prior to connecting to unit?

Not necessary! This means that the controller has input terminals that can handle 6awg sized wires

Will the tracer (20 amp) work on AGM batts?

From the manual: “MPPT Charge controller is compatible with Lead-acid batteries, GEL/AGM and Lithium batteries. (AGM battery setting same as GEL parameters, or more accurate parameters follow battery factory advice by User type ) Four load control modes: manual mode, light ON/OFF, light On+ Timer and test mode.”

My 4210AN with 3 panels in parallel putting out upto 33.5 volts does not seem capable of charging the 24v lifepo4 past 26.73v. Should it charge to 28?

You need to adjust the voltage you need go to settings and fix.


Documents / Resources

EPEVER MPPT Solar Charge Controller [pdf] User Manual
EPEVER, MPPT, Solar, Charge Controller

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