I share here the settings of all devices I have configured for LiFePO4 batteries. As a beginner, it is very confusing to understand all these different options solar charge controllers, BMS, shunts and inverters can give you. I did not know where to start myself!
Through extensive testing with these batteries, I have now set these devices to a, for my set up, optimal state. Below you can find screenshots for these settings as well as the link to the video, where I explained them for this particular device. I go really into details in these videos so you will understand and be able to adapt these settings for your own needs and also different devices.
If you still have any questions, please leave them in the comment section of the relevant video so other viewers can help out as well.
Solar Charge Controller
Here are the settings for my Victron Solar Charge Controller but you can adapt these settings for any other controller as well.
Watch the full video here where I explain the settings in all details:
Important settings:
Absorption Voltage: 3.45V/cell
Float Voltage: 3.35V/cell
Absorption Time: 1h-2h
Link to solar charge controllers
JK-BMS
Here are all settings and functions for the JK-BMS I am using. I’m really going into details in this video and explain all menu points and also why I have set these settings as they are.
Victron Smart Shunt
In the video below, I show and explain all the settings and menus of the Victron Smart Shunt. For a quick reference, here is also a screenshot of my settings.
For the shunt to reset (re-calibrate) to 100%, the following three settings must be valid:
– Charged Voltage must have reached the set value
– Tail Current must fall under the set value
– both criteria above must be met for the set Charge detection time
You need to play around with these three settings for your own setup and see what works best.
Link to the Victron Smart Shunt
Victron VE.Smart Network
I have set up this Bluetooth smart network between my solar charge controllers and smart shunt.
It synchronises charging between the MPPTs and also shares the voltage and current reading of the Smart Shunt to the MPPTs. This compensates for example for voltage losses over cables if the MPPT is a bit further away.
All in total, I have very good and consistent charging results since I’ve setup this network.
I made a tutorial and how-to video about how to setup the VE.Smart Network, when to setup such a network, and its limitations.
Official Victron Energy VE.Smart Networking documentation and manual.
Overkill Solar BMS settings
I’m reviewing here the configuration I have set in the Overkill Solar BMS 48/100. These settings are the same as for the XiaoXiang app but are being displayed in a better structure and overview in the Overkill Solar App.
Watch the video here for a full explanation and find all links and information about the Overkill Solar BMS here.
SEPLOS – Victron Connection. How to set CVL, CCL and DCL through the BMS.
By changing the below settings in the SEPLOS BMS configuration, the BMS has full control over the Victron system and can set CVL, CCL and DCL as per your needs. It all works great but is not really straight forward. Below are all details of which parameters need to be changed. I also tested this for one battery or several in parallel. Watch the full video workshop here with detailed explanations.
| Victron Parameter | SEPLOS Setting if using the 10E BMS |
| Charge Voltage Limit (CVL) | Total Voltage Overvoltage Protection |
| Charge Voltage Limit (CVL) | Charging Overcurrent Warning /2 * n (multiply by number of batteries in parallel) |
| Discharge Current Limit (DCL) | Discharge Overcurrent Warning -10A * n (multiply by number of batteries in parallel) |
| Victron Parameter | SEPLOS Setting if using the 10C BMS |
| Charge Voltage Limit (CVL) | This shows only 56.3V in my setup and cannot be changed |
| Charge Voltage Limit (CVL) | Charge Overcurrent Warning -10A * n (multiply by number of batteries in parallel) |
| Discharge Current Limit (DCL) | Discharge Overcurrent Warning -10A * n (multiply by number of batteries in parallel) |
How to set your Seplos BMS back to 100%, when the battery is fully charged?
I did a full video about these weird settings. You can find it here.
Seplos BMC 10C: (tested with FW2.8)
The BMS seems to reset to 100%SOC once the pack voltage has reached 56V and the current is 0A.
It also does start counting the SOC from this voltage downwards, so ignores everything above 56V.
No other setting seems to affect this 56V threshold. It is fixed set in the software.
Seplos BMS 10E:
This newer BMS seems to reset to 100% SOC only if one of the following thresholds is reached:
– Monomer overvoltage protection
or
– Total-voltage overvoltage protection
the Off-Grid-Garage 