123SmartBMS G3 4S, 1x I-sensor 2021

The Battery Management System m

easures important data like cell voltages, cell temperatures and in- and outgoing currents with the one included highly accurate dual range current sensor. By using one current sensor you can measure the sum of the incoming and outgoing currents and read the charging status in the app. If you prefer to be able to measure and read the incoming and outgoing currents independently, please choose the 123SmartBMS G3 2x I-sensor 2021.

The two signal relays with galvanically isolated contacts can be used to switch on/off current relays of the current to chargers and/or user. This protects your battery against overcharging, deep discharge and overheating.

New in gen3:

• Highly accurate SOC, dual range current sensor to measure a wide range of currents up to 500A.
• Over the air software update.
• LTO compatible, Operates on cell voltages between 1.5V and 5.0V, bypass adjustable between 1.9V - 4.9V.
• Error history to see when, what cell and which error occurred
• SOC logging of the last week..
• More accurate temperature measurement near cell pole.
• Easier configuration.

Main features:

• Modular BMS which can be used from 2 to 255 cells.
• Can be mounted directly on the cells, no external controller needed.
• Two signal relays with galvanically isolated contacts which indicate the system is allowed to load and/or charge. This can be used to switch enable/disable signals or power relays.
• Possible to use two current sensors instead of one to see consumed and produced energy independently.
• Bluetooth 4.0 LE to see relevant data on your portable device.
• Compatible with almost any cell chemistry including LTO, LiFePO4, NMC and NCA.
• 1A balancing current. This means that even high capacity cells (or cells connected in parallel) can be balanced.

Package content:

• IN Cell Board
• OUT Cell Board
• 2 Between Boards
• 1 Dual range current sensor 500A (diameter: 22mm, surface: 380mm2)
• Piece of 0,75 mm² wire for the interconnections
• Connector unlock tool

Installation manual:

Read the installation manual carefully. It contains further information about the BMS and is step-by-step and clearly illustrated how you connect and configure the system. It also describes what information you can see using the app and which values you can set.