Table of Contents
1. Safety precautions ................................................................................................................... 1
1.1. General warnings ............................................................................................................ 1
1.2. Charge and discharge warnings ........................................................................................... 1
1.3. Transportation warnings .................................................................................................... 2
1.4. Disposal of lithium batteries ................................................................................................ 2
2. Introduction ........................................................................................................................... 3
2.1. Description ................................................................................................................... 3
2.2. Features ...................................................................................................................... 3
3. System design and BMS selection guide ........................................................................................ 4
3.1. Maximum number of batteries in series, parallel or series/parallel configuration .................................... 4
3.2. The BMS alarm signals and BMS actions ................................................................................ 4
3.2.1. The BMS's pre-alarm signal ...................................................................................... 5
3.3. The BMS models ............................................................................................................ 6
3.3.1. The smallBMS NG ................................................................................................ 6
3.3.2. The Lynx Smart BMS NG ........................................................................................ 7
3.4. Charging from an alternator ................................................................................................ 8
3.5. Battery monitoring ........................................................................................................... 8
4. Installation ............................................................................................................................. 9
4.1. Unpacking and handling the battery ....................................................................................... 9
4.2. Download and install the VictronConnect app ........................................................................... 9
4.2.1. Update the battery and BMS firmware .......................................................................... 9
4.3. Initial charging before use ................................................................................................ 10
4.3.1. Why charge batteries before use .............................................................................. 10
4.3.2. How to charge batteries before use ........................................................................... 10
4.4. Mounting .................................................................................................................... 12
4.5. Connecting battery cables ................................................................................................ 12
4.5.1. Cable cross-sectional area and fuse ratings ................................................................. 12
4.5.2. Connecting a single battery .................................................................................... 12
4.5.3. Connecting multiple batteries in series ....................................................................... 13
4.5.4. Connecting multiple batteries in parallel ...................................................................... 13
4.5.5. Connecting multiple batteries in series/parallel .............................................................. 13
4.5.6. Battery banks consisting of different batteries ............................................................... 14
4.6. Connecting the BMS ...................................................................................................... 14
4.7. Charger settings ........................................................................................................... 15
4.8. Commissioning ............................................................................................................ 15
5. Operation ............................................................................................................................ 16
5.1. Monitoring & Control ...................................................................................................... 16
5.1.1. Monitoring the battery via VictronConnect ................................................................... 16
5.1.2. Monitoring the battery via a GX device ....................................................................... 17
5.1.3. Monitoring the battery via the VRM Portal .................................................................... 17
5.2. Battery charging and discharging ........................................................................................ 17
5.2.1. Charging the battery and recommended charger settings ................................................. 17
5.2.2. Discharging ...................................................................................................... 19
5.3. Observe the operating conditions ....................................................................................... 19
5.4. Battery care ................................................................................................................ 21
6. Troubleshooting & support ....................................................................................................... 22
6.1. Battery issues .............................................................................................................. 22
6.1.1. How to recognise cell imbalance .............................................................................. 22
6.1.2. Causes for cell imbalance or a variation in cell voltages ................................................... 22
6.1.3. How to recover an imbalanced battery ....................................................................... 23
6.1.4. Less capacity than expected ................................................................................... 23
6.1.5. Battery very low terminal voltage .............................................................................. 24
6.1.6. Battery is close to end-of-cycle life or has been misused .................................................. 25
6.2. BMS issues ................................................................................................................ 26
6.2.1. The BMS frequently disables the battery charger ........................................................... 26
6.2.2. The BMS is prematurely turning chargers off ................................................................ 26
6.2.3. The BMS is prematurely turning loads off .................................................................... 26
Lithium NG 25,6V battery manual
