FAQ: The torque force for the tighning of the cell terminal connectors
40AH + 60AH cells - max 9 N/m
Bigger cells - max 20 N/m
Large cells 300AH, 400AH, 700AH - max 60 N/M
GridFree MicroInverter LED Status Error
When problem is detected, the STATUS LED will display error in RED color
1x Red - Primary Over Current, main circuit current is too big
2x Red - Internal Over Current
3x Red - Internal Over Voltage
4x Red - Internal Under Voltage
8x Red - Grid Synchronization is not OK
9x Red - Safety problem detected
Grid Errors or Grid is not stable
5x Red - The grid is not OK, may be voltage, frequency, or other thing of the grid are not OK. MicroInverter will try later to resume function.
6 x Red - Grid Over Frequency
7 x Red - Grid Under Frequency
10 x Red - Grid Over Voltage
11 x Red - Grid Under Voltage
13 x Red - DC input voltage error. The DC input voltage is out of working range of the MicroInverter.
12 x Red - Heat Sink Over Heat – the inner temperature is too high
14 x Red - Internal temperature error
GridFree eGate Gateway LED status
Check the status of the LED for the GridFree MicroInverter gateway.
Additional information about the eGate functions are available at the user manual.
The specification for the 12V LP models of the LiFePO4 batteries
Check the updated version of the specification for the 12V block models of the LP batteries. Download the PDF file here.
The GridFree Tracer specifications and manuals
Winston Battery Operator Manual
The official handbook for the operation of the LiFeYPO4 cells and batteries made by Winston (formerly Thunder Sky)
RT-BMS Monitor unit released - product and manual information
RT-BMS data monitor unit with a touch display (for RT-BMS Master unit). Designed to read and display data from all software versions of RT-BMS Master unit starting from HW version 2.0. The BMS Master Unit is connected to the board using a special I2C to RS232 cable.
In addition to the display of the data, the monitor can be configured to save gathered data from the BMS to a CSV file to be downloaded to your PC.
Check the RT-BMS Monitor documentation on-line.
See the product placing at GWL Power on-line web shop.
RT-BMS Programming of the parameters
EVBIKE Manual English Vesrion - updated
Please see the latest version of the EVBIKE manual. Download here (PDF)!
Simple Battery Management Board (SBM)
The easiest way to protect a lithium battery pack. The SBM board manages a pack of cells and disconnects the load under any unfavourable circumstances: cell over voltage, cell undervoltage.
SBM16/60 - the management board for 16 LFP cells (48V) with power up to 60A. (photo) Check the PDF with technical specifications for SBM16/60. For higher loads you need to use a DC contactor to be managed by the SBM board. This drawing shows the DC contactor installation.