  |   |   |
| Check MPPT 75/15 with Bluetooth | Check MPPT 100/30 with Bluetooth | Check MPPT 100/50 with Bluetooth |
Victron MPPT charge controllers are one of the best solar controllers for charging lithium and lead-acid batteries. In fact, they can be set manually to charge any battery chemistry. This and more info you can find while browsing through the guide.
For example, Victron MPPT 75/15 unit shown above can operate with 12,24 and 48V battery sets, whereas 100/20 and 100/30 models are only compatible with 12 and 24V battery banks. Make sure to verify the charge controller operation voltage before purchasing a controller. There are many other models available in the market, do not hesitate to contact us if you need help selecting the right one. In this manual, we want to show you how to program Victron MPPT charging settings for lithium-ion and lead-acid batteries.
The example below reflects a 12V battery bank scenario, for the 24 and 48V systems simply multiply the 12V values by 2 and 4 respectively.
Step 1
Download VictronConnect App from App Store or Google Play Store, and create an account
Step 2
In the “Device List” look for the charge controller. It should say “SmartSolar”, click on the device image.
Step 3
The Bluetooth pop-up window should appear and you will need to type in the pin code. The default pin is 000000 (six zeros with no spaces in between)
Step 4
If the firmware update is available, click on the Update button below. Do not touch your phone while update is in progress.
Step 5
After seeing the main screen, click on the gear symbol on top right corner following by the battery menu
Step 6
After opening the battery setting page, select the appropriate battery voltage (12,24 or 48V).
Step 7
Go to the battery preset menu and select the appropriate type or chemistry
Victron MPPT charging settings are easy to follow. However, for those who are looking to setup the charging settings manually, the table below is a great source of truth. Also, you can use these settings while programming other charge controllers.
| Setting | Lithium-ion battery 12V/24V/48V | Lead-acid AGM, GEL 12V/24V/48V | Lead-acid flooded 12V/24V/48V |
|---|---|---|---|
| Bulk/Absorption Voltage | 14.4V/28.8V/57.6V | 14.7V/29.4V/58.8V | 14.8/29.6V/59.2V |
| Bulk/Absorption Time | 30 min per 100Ah of LiFePO4 battery | 0.42 x Capacity / Charging Current (e.g. 0.42 * 300Ah / 30A = 4.2 hours | 0.42 x Capacity / Charging Current (e.g. 0.42 * 400Ah / 50A = 3.4 hours |
| Float Voltage | 13.5V/27V/54V | 13.6V/27.2V/54.6V | 13.5V/27V/54V |
| Equalization voltage Equalization Time |  | 14.7V/29.4V/58.8V | 15.8V/31.6V/63.2V 2.5 hours |
| Temperature Compensation | | -4mV/°C/cell | -4mV/°C/cell |
| Low Temperature cut-off | 3° degrees Celsius | | |
We hope that our guide has helped you to make this procedure clear and easy to follow. Do not hesitate to contact us if you have any other questions.
May the solar power be with you!