Which Starter Kit do I get
Our product is very configurable so it's not always easy to give a clear buy this you would need to look at your system and decide what fits best.
First thing is that you should always begin with a starter kit as then you will have the basics of what is needed to start.
To decide which starter kit you need to decide
1. Which cell monitor is best for me - This depends on the battery you have chosen as they are equivalent specification regarding measurements so the choice is about ease of attachment. This article should help with the choice https://support.batrium.com/article/75-what-type-of-cell-monitor-should-i-choose Please note that if your battery has a shared loom then it is not a fit for WatchMon4,
2. How many cell monitors do I need?
Typically we have 48V and 24V for the DIY market, with LiFePO4 that is 16 cell monitors, with Li Ion it is 14 cell monitors. 24V is half that. If your system is configured otherwise then it is 1 for each in series. If there is not a configuration that fits exactly typically you would order a starter kit without cell monitors and then add the number to match your configuration in series e.g. 4s4p would need 4 cell monitors plus you need to add 1 cell monitor cable to close the loop made with the cell monitors.
3. Do I need State of Charge?
Recommended but not essential unless planning to attach to an inverter via CAN. The SOC% sensor is like a fuel gauge.
4. Do I need the expansion board version or is WatchMon4Solo sufficient?
The purpose of the Expansion board is to connect to external devices such as a fan, heater, contactor or circuit breaker etc, It also contains both relays and mosfet digital outputs. As the majority of our customers only ever used 2 outputs we included 2 mosfet outputs in our WatchMon4 released this year. Therefore you need to look at your own circumstance and what you wish to connect to decide if this is needed for you.
5. Are you connecting an inverter/charger via CANbus
This is on the WatchMon. Some inverters or chargers can be hooked up via CANbus and share information. The interface is specific to the inverter and the amount of information able to be shared varies greatly depending on the complexity of the inverter. In all cases a SOC% sensor is required if connecting the inverter charger this way,