Integration guide
Teconnex batteries, read directly
SavvyVan3 talks to Teconnex batteries over wireless and reads them directly - state of charge, current, voltage, temperature and charge cycles, straight from the battery’s own management system. No shunt to buy, and nothing extra to wire.
At a glance
- Connects
- Directly over wireless - no shunt needed
- Shows
- State of charge, volts, amps, watts, temperature and cycles
- In the list as
- Begins TXP
- Needs
- A SavvyVan3 panel on the latest software
- Also feeds
- Water heater control
Before you start
Make sure your panel is on the latest software. Battery support improves with almost every release, and a panel a few versions behind may not recognise your battery. Update instructions are in the SavvyVan3 user guide.
A van uses one source of battery data - a SavvyShunt, or a battery that reports itself, never both. With a Teconnex battery you do not need a shunt, and fitting one anyway gives you two versions of the truth.
Pairing it
- On the panel, open Installer Settings and go to the device pairing screen - the one with Scan on the right-hand side.
- Tap Scan and give it a few seconds to look around.
- Tap the + beside your battery. Teconnex batteries show up with a name beginning TXP.
- Wait for the symbol to turn blue. The battery moves into the list on the left, and the symbol beside it turning blue is the panel telling you it is connected.
- Tap the home button. Your battery is now on the main screen, showing live data.
What you get
Tap the battery on the left of the home screen and a Teconnex battery opens its own page, in Teconnex colours, rather than the power screen other batteries use. State of charge comes from the battery’s own management system, so it is a figure the battery is certain of rather than one inferred from voltage. Along with it you get live current in and out, power in watts, the pack voltage, the battery’s temperature and how many charge cycles it has been through. The lightning bolt on the battery means it is charging.
Disconnect for 60s, top right, lets go of the battery for a minute. A battery holds one connection at a time, so that is how you get into the battery maker’s own app without unpairing anything - the panel picks the battery up again on its own afterwards.
That data feeds the rest of the panel too: water heater control can use spare charge rather than leaving it in the battery.
Looking at the cells
Because the panel is talking to the battery’s management system rather than measuring from outside, it can also show you what is going on inside the pack. Under Battery Settings you get the number of cells, the average cell voltage, every individual cell voltage, the gap between the highest and lowest, whether the balancer is working and how hard, and the pack’s temperature sensors.
Most of the time you will never look at it. The one time it matters - a cell drifting away from the others, which is how a lithium pack usually starts to fail - you can see it on the van’s own screen, without a laptop and somebody else’s app.
If it does not appear
- Check the software version first. It is the most common cause by a mile.
- Close anything else that talks to the battery, including a phone app. A battery holds one connection at a time.
- Get closer. Pair from inside the van, near the battery, rather than from the other side of a metal wall.
Still nothing? Tell us what you are seeing - including the name the battery shows up as, if it shows up at all. That one detail usually settles it.
Questions people ask
- Do I still need a SavvyShunt?
- No. A Teconnex battery reports its own state of charge, so the shunt would be measuring something the battery already knows. A van uses one source of battery data - either a shunt or a direct battery connection, never both.
- Does it work with more than one battery?
- The panel reads one battery source. If you have several batteries wired as a bank, connect to the one reporting for the bank.