Overview
The EPEVER Tracer BN Series MPPT solar charge controller is designed for 12V/24V battery systems and supports up to 150V PV input (138V @ 77°F). This listing covers the Tracer BN family models 4215BN / 3215BN / 2215BN, and includes LiFePO4 (12.8V, 4 cells in series) recommended settings for the 4215BN 40A version.
Key Features
- MPPT technology with tracking efficiency up to 99.5%
- Maximum charge conversion efficiency as high as 98%
- Negative grounding design (Tracer-BN series is a negative ground controller)
- Standard Modbus interface with RS485 port (RJ45 interface)
- Smart protection functions: overcharge, overload, over-discharge, overheat, reverse polarity, and short-circuit protection
- Aluminium case and heat sink design
- Multiple load work modes
Specifications (Tracer 4215BN 40A)
| Controller type | MPPT |
| Nominal system voltage | 12V, 24V |
| Rated charge current | 40A |
| Rated load current | 20A |
| Max PV open circuit voltage | 150V / 138V (138V @ 77°F) |
| Max PV input power | 520W (12V battery) / 1040W (24V battery) |
| Recommended power input | 600W (12V battery) / 1200W (24V battery) |
LiFePO4 recommended values (12.8V / 4 cells in series)
| Boost duration | 120 sec. |
| Temp. compensation coefficient | 0 |
| Over volt. disconnect | 15.6V |
| Over volt. reconnect | 14.7V |
| Equalize charging volt. | N/A |
| Boost charging volt. | 14.5V |
| Boost reconnect charge volt. | 13.2V |
| Charging limit voltage | 14.6V |
| Discharging limit volt. | 10.6V |
| Low voltage disconnect volt. | 11.1V |
| Low voltage reconnect volt. | 12.8V |
| Under vol. warning volt. | 12.0V |
| Under voltage warning reconnect volt. | 12.8V |
Ports, Indicators & Terminals
- Heat sink
- Charging LED indicator
- Battery LED indicator
- RTS port (Remote Temperature Sensor connection)
- Solar terminal
- Battery terminal
- Load terminal
- RS-485 port
- Button (load switch)
RS485 port supports monitoring by PC and controller software updates via RS485 (RJ45 interface).
Installation & Setup
Mounting / connection notes (Tracer 4215BN)
- Connect components to the controller in the required sequence and pay attention to “+” and “-”. Do not turn on the fuse during installation. When disconnecting the system, the order will be reversed.
- After installation, power the controller and check the battery indicator; it should be green. Always connect the battery first so the controller can recognize the system voltage.
- Install the battery fuse as close to the battery as possible; suggested distance is within 150 mm.
- Any negative connection of solar, load, or battery can be earth grounded as required (negative ground controller).
3 ways to set the MPPT charger
- Remote meter MT50
- Android EPEVER app via EPEVER eBox (WiFi or Bluetooth)
- PC monitoring and setting software “Solar Station Monitor” (use USB to RS485 converter cable model: CC-USB-RS485-150U)
Applications
- 12V/24V solar charging systems for LiFePO4 batteries (12.8V 4S settings provided) and other compatible battery systems
- Home, industrial, and commercial solar charging
- RV systems (negative grounding design)
For compatibility or configuration support (including RS485/Modbus monitoring options), contact service@tsolar.top or visit https://tsolar.top/.
Video
Details
The EPEVER Tracer 4215BN 40A MPPT solar charge controller provides regulated battery charging from a solar PV input.
The EPEVER Tracer BN Series MPPT controller supports up to 150V PV input and includes an RS485 Modbus port with a negative-ground design.
The EPEVER Tracer BN MPPT controller includes PV, battery, and load terminals plus an RS485/RJ45 port for monitoring and parameter updates.
The Tracer BN series wiring layout shows PV input through a breaker, battery connection (12/24V), and a fused load output, plus setup options via MT50 remote meter, EPEVER app, or PC software.
