Home backup and load shedding
Know what your backup battery is really doing
Your inverter shows a charge percentage. It doesn’t show the 16 cells inside your 48 V battery, and that’s where trouble starts. CellBoss reads your battery’s board over Bluetooth and shows every cell, so a drifting cell doesn’t catch you out in the dark.
CellBoss is in testing on Google Play now. Want to try it sooner with your own battery? Email us.
Why the inverter’s number isn’t enough
A 48 V LiFePO4 battery is 15 or 16 cells in a row. If one of them drifts low, the board switches the whole battery off to protect it, even when the inverter still says 30%. That’s the battery that “died” at 10 at night with charge left in it.
CellBoss shows each cell’s voltage, the lowest and highest, and how far apart they are. You see a weak or drifting cell weeks before it trips the battery, and you can call your installer while it’s still an easy fix.
What you see
- The charge, the power going in or out, and how long until full or empty at today’s load.
- Every cell, the difference between them, and when the board is balancing.
- Temperatures of the cells and the board, handy for a battery in a hot garage or a cupboard.
- The board’s alarms in plain words.
- Several batteries PRO: two or more in parallel, added up in the bank view, with each one’s cells a tap away.
- History PRO: how the charge went through the day and the night, and how the cells behaved, by day, week and month.
Which home batteries does it read?
Batteries with a JK, JBD or Daly board that has Bluetooth. That covers many DIY 48 V banks built with JK boards and paired with Sunsynk or Deye inverters, and many locally built packs.
Most big-brand home batteries use their own board that talks only to the inverter. CellBoss can’t read those. To check yours, stand next to the battery and open your phone’s Bluetooth list: a JK board shows a name starting with JK-, a Daly board one starting with DL-.
It won’t touch your inverter or your settings
CellBoss only reads, over Bluetooth. It doesn’t change a single setting on the battery’s board, and it leaves the board’s link to your inverter (CAN or RS485) alone. Your installer’s setup stays exactly as it is.
Your phone needs to be within Bluetooth range of the battery: often about 10 metres in the open, less through walls and steel cabinets.
Installers
Give your customers CellBoss. They see their battery and every cell, they can’t change your settings, and they can send you a battery report (PDF) when something looks off.
Questions
Will CellBoss work with my Sunsynk or Deye inverter?
CellBoss reads the battery, not the inverter. If your battery has a JK, JBD or Daly board with Bluetooth, CellBoss reads it no matter which inverter you have.
Does it work during load shedding?
Yes. CellBoss needs only Bluetooth, not Wi-Fi or mobile data, so it works when the power and the towers are down.
Can I check my battery from work?
No. CellBoss reads the battery over Bluetooth, so you need to be near it. Nothing leaves your phone, and nothing goes over the internet.
Can CellBoss change my battery’s settings?
No. It’s read-only. Your installer’s settings stay as they are.
See every cell of your backup battery
Spot a drifting cell before it leaves you in the dark.
CellBoss is in testing on Google Play now. Want to try it sooner with your own battery? Email us.